The title compound was synthesized and the structure was investigated by X-ray crystallography. The compound crystallizes in the triclinic crystal class in the space group P1 with cell parameters a = 7.794(5)Å, b = 11.736(1)Å, c = 12.422(1)Å, α = 112.27(2)°, β = 97.383(5)°, γ = 103.876(5)°, Z = 2. The structure exhibits intermolecular hydrogen bonds of the type N-H…O and N-H…N.

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3-Nitro-4-hydroxycoumarin has been synthesized and characterized by X-ray diffraction analysis. The compound crystallizes in the orthorhombic crystal class in the space group Pc2₁b with cell parameters a = 18.5990(3)Å, b = 5.0250(10)Å, c = 8.871(2)Å, Z = 4. The structure exhibits intramolecular hydrogen bonds of the type O-H…O and O-H…N.

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The title compound, C₂₂H₂₁N₃O₂, occupies a two-fold crystallographic axis. The dihedral angle between the triazine ring and the phenyl ring is 11.5(1)°. The crystal structure is stabilized by normal van der Waals interactions.

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The title compound, C₇H₆N₄O₂S, crystallizes in the monoclinic system, space group Cc, with cell constants a = 3.9122(9)Å, b = 19.949(10)Å, c = 11.323(3)Å, β = 99.47(3)°, and Z = 4. The regioselective formation of this compound might be the result of steric and electronic considerations.

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In the molecular structure, both of the phenyl rings are twisted considerably out of the plane of the central tetrahydropyridine (THP) ring which itself being puckered to adopt a twist boat conformation. The ethyl moiety at pyridine N1 stands vertical, while the moiety at the 3-position of pyridine N1 is coplanar to the THP plane. An intermolecular C-H…O interaction influences the molecular packing.

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The title compound (I), a chalcone analog, was synthesized and crystallized in space group P2₁/n with the following cell parameters: a = 14.515(2)Å, b = 7.870(1)Å, c = 15.521(2)Å, β = 111.523(3)°, Z = 4. The molecular backbone is essentially planar and intramoleculary stabilized by C-H…O…H-C hydrogen-bonds of the S (5) type, which is bifurcated at the keto oxygen of the central propanone group. The crystal structure is held together by intermolecular C-H…O hydrogen-bond and π…π stacking interactions.

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p-Methoxyphenyl 2-acetamido-3,4,6-tri-O-acetyl-2-deoxy-β-D-glucopyranoside (1) was prepared by the reaction of pentaacetyl-β-D-glucosamine, p-methoxyphenol, and boron trifluoride etherate in dry methylene chloride. The crystal structure was determined by X-ray diffraction analysis. The title compound 1 crystallizes in the hexagonale space group P6₅ with a = b = 12.5772(5)Å, V = 3427.0(3)ų, and Z = 6. The crystal structure was solved by direct methods and refined by full-matrix least-squares. An intermolecular hydrogen bond of the amido hydrogen to the carbonyl oxygen of the acetamido group in another molecule was found.

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The title compound, C₂₂H₁₆N₂O₂, exists as the phenol-imine form in the crystal, and there are strong intramolecular O-H…N hydrogen bonds with an O…N distance of 2.575(3)Å. The asymmetric unit contains only one-half of the molecule. The C=N bond distance is 1.290(2)Å and the C=N-Nⁱ bond angle is 113.6(2)°. The configuration about the N-N bond is anti(1E). It belongs to the space group P2₁/n with cell parameters a = 8.5690(7), b = 6.1116(3), c = 16.0107(14)Å, β = 91.161(7)°.

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The crystal structures of 3-nitrocoumarin derivatives, which have potent antimicrobial activity, have been determined. In 4-hydroxy and 4-ethoxy derivatives, the molecules had commonly planar chromone moieties, but the 3-nitro groups attached to the skeleton with different arrangements. The structures clarified the enol-keto tautomerism and solvatochromism of 4-hydroxy-3-nitrocoumarin.

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trans-Bis(2-benzamido)oxazoline nickel(II) was synthesized and the crystal structure was determined by single-crystal X-ray diffractometry. The crystal system is monoclinic with a space group of P2₁/n and Z = 2. The unit-cell dimensions are a = 5.1096(13)Å, b = 15.186(4)Å, c = 11.513(3)Å with β = 90.871(5)°, V = 893.2(4)Å. The final R value is 0.0526 for 1361 observed reflections (I > 2 σ (I)). The central nickel(II) coordinates with benzoyl oxygen atoms, nitrogen atoms of oxazoline, and forms a square-planar geometry.

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An equimolar mixture of palmitic acid (hexadecanoic acid) and nicotinamide (3-pyridinecarboxamide) in acetone yielded crystals of a 1:1 complex, C₂₂H₃₈N₂O₃. Palmitic acid forms a lipid bilayer and is stacked to form a lamellar structure. The alkyl chain of palmitic acid has an all-trans conformation. Nicotinamides form a dimmer, which is intercalated into hydrophilic regions of the lamellar structure.

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A cobalt(II) complex of methyllactato and 1,10-phenanthroline 1 [Co(HmL)(1,10-phen)₂](HmL)·4H₂O (HmL = 2-methyllactato) was synthesized and its crystal structure was determined by single-crystal X-ray diffractometry. This compound crystallizes in triclinic space group P-1, with a = 9.0194(15), b = 13.406(2), c = 13.977(2)Å, α = 94.969(4), β = 99.878(3), γ = 91.351(3)°, V = 1657.4(4)ų and Z = 2. The cobalt(II) ion is six-coordinated in a distorted octahedral environment.

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The crystal structure of 7-(4-fluorophenyl)-5,6,7,14-tetrahydroquinolino[4,3-b]benzo[f]-quinolin-6-one N,N-dimethylformamide solvate was determined by X-ray diffraction. The title compound 1, C₂₉H₂₄FN₃O₂, is monoclinic, space group P2₁/c, a = 9.5653(12), b = 24.394(3), c = 10.7387(15)Å, β = 111.978(2)°, Z = 4, V = 2323.6(5)ų. The central 1,4-dihydropyridine ring adopts a boat confirmation. The intermolecular hydrogen bonds of N-H…O link the molecules forming the dimmers and another amino group connects the two solvent molecules with the dimmer forming the N-H…O hydrogen bonds.

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The crystal structure of [Fe₃O(OAc)₆(DMSO)₃]₂⁺·(Fe₂Cl₆O)^2- was determined by the X-ray diffraction method. This complex crystallized in the triclinic system, space group P 1, with two molecules per unit cell. The unit-cell dimensions are a = 9.9509(7)Å, b = 14.0228(10)Å, c = 15.0561(11)Å, α = 108.7700(10)°, β = 100.6800(10)°, γ = 105.7890(10)° and V = 1826.3(2)Å. The final R value is 0.0371 for 8369 measured reflections. In the cationic section of this complex the coordination sphere around each metal center is close to a distorted octahedral. Every two irons are connected to each other, by two bridges of alkyl acetate. The DMSO molecule as a monodentate ligand is connected to every iron. Anionic section has a trigonal antiprism skeleton that the oxygen atom lies in the center of these structures.

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The reaction between [CuCl(PPh₃)₃] and 1,3-bis(4-nitrophenyl)triazene deprotonated with metallic sodium in methanol yields crystalline [Cu(O₂NC₆H₄NNNC₆H₄NO₂)(C₁₈H₁₅P)₂], the first mononuclear triazenide complex of Cu(I) including a [Cu(PPh₃)₂]⁺ fragment. The crystals belong to the monoclinic system, space group P2₁/c with the cell dimensions a = 15.8852(3), b = 11.9539(3), c = 23.2094(6)Å, β = 94.646(1)°, V = 4392.75(18)ų, Z = 4. The crystal structure reveals a bidimensional assembling of complex molecules linked through intermolecular non-classical C-H…O hydrogen bonds.

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A platinum complex with 6-oxa-3,9-dithiabicyclo[9,4,0]-pentadeca-1(11),12,14-triene (L) was prepared and its crystal structure was analyzed. In the complex, the Pt atom is four-coordinated in a distorted square-planar environment with two S atoms and two Cl-ions in a cis-arrangement.

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The compound, dimethyl[5-tert-butyl-2-(6-methyl-1H-benzotriazol-2-yl)phenolato]gallium (1), crystallizes in triclinic with space group P1 and a = 7.4515(15)Å, b = 10.525(2)Å, c = 12.535(3)Å, α = 74.18(3)°, β = 74.32(3)°, γ = 84.27(3)°, V = 910.3(3)ų, Z = 2. The gallium atom is bonded by one oxygen atom and coordinated by a nitrogen atom, forming one six-member ring. It forms a central four-member ring composed of two gallium and two oxygen atoms.

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A hybrid compound, [C₉H₁₁NH₃]₂[Co(H₂P₂O₇)₂(H₂O)₂], was prepared. It crystallizes in the triclinic P1 unit cell with a = 7.400(6), b = 7.627(3), c = 13.655(5)Å, α = 87.79(6), β = 74.65(6), γ = 73.92(8)°, V = 713.6(8)ų and Z = 1. The crystal structure can be described by anionic layers where the monomeric entities, [Co(H₂P₂O₇)₂(H₂O)₂]^2-, are located in the ab plane. Between these layers, the organic cations are displayed by establishing strong H-bonds to successfully participate to the cohesion of a three-dimensional network.

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The title compound, [C₂₇H₅₁NS₂Sn], crystallized in a monoclinic space group _P2₁/n with the following cell parameters: a = 10.13770(10), b = 27.9513(4), c = 10.82300(10)Å, β = 106.6070(10)°, V = 2938.90(6)ų, Z = 4, and D_x = 1.294 Mg/m³. The structure was refined to a final R value of 0.0232 for 5267 reflections [I > 2 σ(I)]. The structure can be best described as a distorted tetrahedron owing to the presence of a long intramolecular Sn…S interaction.

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The title complex, [Cu(μ-Br)(nca₂dab)]₂ [nca₂dab is N,N′-bis(2-nitrocinnamaldehyde)-2,2′-diiminobiphenyl], has a dimeric structure, where two copper(I) ions are doubly bridged by bromo substituents. The coordination geometry around the Cu atom is a distorted tetrahedron formed by two N atoms from a bidentate nca₂dab ligand and two bromo substituents. The distance between the two Cu atoms is 2.6650(8)Å. The nca₂dab ligand adopts a Z,Z configuration.

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The btp ligand bridges Ni(II) ions to form a polymeric compound; further, two water ligands and a dangling btp ligand are also coordinated to Ni(II) ions. The coordination geometry of the Ni(II) ion is distorted octahedral. There is a hydrogen bond between a water ligand and a non-coordinated nitrate counterion (O1…O43 2.734(1)Å).

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The title compound, C₂₉H₃₄N₂O₇, is a substituted monotopic benzo-15-crown-5-ether ligand. It belongs to the space group P2₁/a with cell parameters a = 8.9857(6), b = 25.0353(17), c = 12.6979(9)Å and β = 109.730(1)°. The intermolecular N-H…O hydrogen bonds are dominantly effective in stabilizing the crystal structure. The N-H…O intermolecular hydrogen bonds link the molecules, forming infinite one-dimensional chains running approximatelly parallel to the a-axis. The relative macrocyclic inner-hole size is estimated to be 1.44 Å. The substituent and benzocrown ether precursors about the C=N imine bond reveals a trans planar (1E) configuration.

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In the molecular structure, the central pyridine ring adopts a flat boat conformation. In the solid state, the symmetry-related molecules are linked by weak π-π stacking interactions in addition to the intramolecular C-H…N interaction.

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The title compound, C₁₅H₁₄N₂O₂, crsytallizes in the monoclinic P2₁/n space group. It contains a diazepine ring with a boat conformation. The unit-cell parameters at room temperature are a = 11.165(5), b = 4.233(5), c = 27.243(5)Å, β = 93.644(5)°, V = 1284.9(16)ų, D_x = 1.314 g/cm³, Z = 4. The crystal structure is stabilized by inter C-H…O and intra N-H…O hydrogen bonding interactions.

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The title complexes, [Ag(ca₂en)(PPh₃)]X (1: X = PF₆, 2: X = BF₄), ca₂en = N,N′-bis(trans-cinnamaldehyde)-1,2-diiminoethane, were synthesized and characterized. The structure determination of silver(I) complexes, by X-ray crystallography, showed that the ca₂en ligand is coordinated as a bidentate N,N donor, forming a five-member chelate ring with a bite angle of 75.80(1)° for 1 and 76.9(2)° for 2. The structures contain cationic moieties of silver(I) ions (in a distorted trigonal planer) and hexafluorophosphate or tetrafluoroborate anions. The ca₂en ligand adopts a Z,Z configuration.

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The title complex, [Ag₂((Me-pk)₂en)₂](ClO₄)₂ {(Me-pk)₂en = N,N′-bis[(pyridine-2-yl)acetylidene]ethane-1,2-diamine}, has been synthesized and structurally characterized by single-crystal X-ray diffraction. The (Me-pk)₂en acts as a tetradentate ligand coordinating via four N atoms to two silver(I) centers. The complex forms double-helical structure with the two silver ions in distorted square pyramidal.

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Bis((—)-2-benzamido-4-phenyl-2-oxazoline)copper(II) was synthesized and the crystal structure is determined by single-crystal X-ray diffractometry. The crystal system are triclinic with a space group of P-1 and Z = 1. The unit-cell dimensions were a = 6.099(2)Å, b = 11.082(4)Å, c = 11.331(4)Å with α = 113.278(5)°, β = 104.134(5)° γ = 91.733(5)°, V = 675.3(4)ų. The final R value is 0.0583 for 1980 observed reflections (I > 2 σ (I)).

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The title compound was synthesized and the structure was investigated by X-ray methods. The compound crystallizes in monoclinic crystal class in the space group P2₁/n with cell parameters a = 8.6040(5)Å, b = 16.0630(19)Å, c = 12.9530(15)Å, β = 96.455(7)° and Z = 4. The structure exhibits an intermolecular hydrogen bond of the type C-H…O. The carbonyl group bond lengths of ketone and ester are slightly different.

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The title compound, C₁₃H₈Cl₂O₂, was synthesized and the structure was investigated by X-ray methods. The compound crystallizes in triclinic crystal class in the space group P1 with cell parameters a = 7.3010(8)Å, b = 7.3510(8)Å, c = 10.9240(14)Å, α = 87.976(6)°, β = 85.903(7)°, γ = 84.736(8)°, Z = 2. The structure exhibits intramolecular hydrogen bond of the type O-H…O.

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The title compound was synthesized and characterized by the X-ray diffraction method. The compound crystallizes in the orthorhombic space group Pcab with cell parameters a = 7.4720(8)Å, b = 15.6800(11)Å, c = 16.4010(15)Å, Z = 8. The structure exhibits intermolecular hydrogen bonds of the type C-H…O.

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The title compound, C₁₀H₁₃NO₅ was synthesized and the structure was investigated by X-ray methods. The compound crystallizes in monoclinic crystal class in the space group P2₁/c with cell parameters a=8.2660(4)Å, b=18.5580(19)Å, c=7.3470(8)Å, β = 90.352(6)° and Z = 4. The structure exhibits intermolecular hydrogen bonds of the type O-H…O.

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The crystal structure of 3,7-di(3-nitrophenyl)-1,5-dioxa-3,7-diazacyclooctane (DDCO) was determined by crystallographic methods. The monoclinic crystal, C₁₆H₁₆N₄O₆, belongs to space group P2₁/n with cell dimensions of a = 6.6994(18), b = 12.369(3), c = 19.003(5)Å, β = 92.791(6)°, V = 1572.8(7)Å^-3. Z = 4. Final R1 = 0.0551. The compound DDCO has a chair-chair of crown conformation.

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C₂₅H₂₇NO₇ is monoclinic, P2₁/n. The unit-cell dimensions at 293 K are a = 14.031(1), b = 10.717(1), c = 32.093(3)Å, β = 94.633(2)°, V = 4810.1(7)ų, D_x = 1.252 g/cm³, and Z = 8. The R value is R = 0.065 for 8486 reflections. The isoxazol rings adopt a half-chair conformation. The molecule is stabilized by several C-H…O intermolecular contacts.

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Single crystals of the N-phenylated 12-membered N₂S₂ macrocycle with a pyridine subunit were prepared and the crystal structure was analyzed. The title compound exhibits a chair-like conformation and the macrocyclic ring is folded over a pyridine subunit. Two S donors are exo-oriented to the macrocyclic ring cavity.

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Phytochemical investigations of the Datura quercifolia (Solanaceae) plant yielded a minor withanolide. The structure of the withanolide was established by spectral analysis and X-ray diffraction studies as 6α,7α:24α,25α-diepoxy-5α,12α-dihydroxy-1-oxo-20S,22R-witha-2-enolide (C₂₈H₃₈O₇. CH₃OH). The withanolide crystallizes in the orthorhombic space group P2₁2₁2₁ with unit cell parameters a = 6.916(4), b = 19.199(2), c = 20.138(5)Å, Z = 4, D_cal = 1.288 Mg m^-3. The crystal structure was solved by direct methods and refined to R = 0.0462 for 1628 observed reflections. The ring conformations are: A and B, half-chair; C, chair; D, intermediate between half-chair and envelope; E, diplanar. The geometry of the rings is trans at the A/B, B/C and C/D ring junctions. The twist along the length of the steroid nucleus is negligible [C19-C10…C13-C18 = 3.3°]. The crystal structure is stabilized by intra- and intermolecular O-H…O and C-H…O hydrogen bonds.

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The crystal structure of N-(1,3-benzothiazol-2-yl)-N-[1-(piperidin-4-ylmethyl)-4,5-dihydro-1H-imidazol-2-yl]amine has been determined. The compound crystallizes in monoclinic P2₁/c; a = 11.7456(2)Å, b = 10.1254(2)Å, c = 13.9107(2)Å, β = 104.669(1)°, V = 1600.46(5)ų and Z = 4. The final R value is 0.0483. The benzothiazol and imidazol rings are planar with the dihedral angle being 6.37(8)° between them. The piperidin ring takes a chair conformation.

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The title compound, C₁₄H₁₄O₄, was synthesized and characterized by X-ray diffraction analysis. The compound crystallizes in the monoclinic crystal class in the space group P2₁/c with cell parameters a = 9.6970(7)Å, b = 10.3820(7)Å, c = 12.9440(9)Å, β = 110.130(3)° and Z = 4. The structure exhibits inter and intramolecular hydrogen bonds of the type C-H…O.

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The single-crystal structure of benzodiazepin-2,4-dione (C₉H₈N₂O₂) was determined at room temperature. The compound is monoclinic, P2₁/m with Z = 2, the molecule is symmetrical to the mirror. The unit-cell dimensions are a = 8.5421(18)Å, b = 11.671(5)Å, c = 4.037(5)Å, β = 97.58(2)° and V = 399.0(5)ų. The R value is 0.0786 for 322 observed reflections.

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The chemical preparation and crystal structure are given for a new organic-cation dihydrogenomonoarsenate, (4-ClC₆H₄NH₃)H₂AsO₄, in the solid state. This compound crystallizes in the monoclinic space group P2₁/a with the following unit-cell parameters: a = 8.339(5)Å, b = 9.434(3)Å, c = 12.630(4)Å, β = 102.28(4)°, Z = 4 and V = 970.8(7)ų. The crystal structure was solved with a final R = 0.05 using 2922 independent reflections. The atomic arrangement can be described as two-dimensional inorganic thick layers spreading around the z = 0 plane. The organic entities are anchored to the inorganic layers through N-H…O hydrogen bonds.

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The title compound was synthesized and the structure was investigated by X-ray crystallography. The compound crystallizes in the monoclinic crystal class in the space group P2₁/c with cell parameters a = 9.2360(9)Å, b = 14.1980(10)Å, c = 13.1330(14)Å, β = 105.843(3)°, Z = 4. The carbonyl group can be oriented in the +synclinal conformation.

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The compound 2-(4-chlorophenyl)-3-(4-phthalamide)-1,3-thiazolidin-4-one was synthesized and the structure investigated by X-ray crystallography. The compound crystallizes in the monoclinic system with space group P2₁/a; the cell parameters are a = 12.705(1)Å, b = 9.158(2)Å, c = 13.665(2)Å, β = 97.625(9)°, Z = 4, V = 1575.9(4)ų. The final residual factor is R1 = 0.0857. The compound exhibits intermolecular hydrogen bonds of type N-H…O and C-H…O.

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The title compound, C₁₅H₁₄O₂, was synthesized and the structure was studied by X-ray crystallography. The compound crystallizes in monoclinic crystal class in the space group P2₁/n with cell parameters a = 5.9910(5)Å, b = 13.493(2)Å, c = 14.894(2)Å, β = 95.776(8)° and Z = 4. The structure exhibits intermolecular hydrogen bonds of the type O-H…O.

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The title compound was synthesized and the structure was investigated by X-ray crystallography. The compound crystallizes in the monoclinic crystal class in the space group P2₁/n with cell parameters a = 7.6800(6)Å, b = 17.3330(15)Å, c = 12.0440(8)Å, β = 105.248(5)°, Z = 4. The quinazoline ring is in envelope conformation. The structure exhibits an intermolecular hydrogen bond of the type N-H…N.

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The crystal Structure of 7-(1H-pyrrol-1-yl)-4-methyl-2H-1-benzopyran-2-one was determined by X-ray diffraction. The crystal, C₁₄H₁₁NO₂, belongs to space group C2/c with cell dimensions a = 17.74(1)Å, b = 7.343(3)Å, c = 16.242(6)Å, β = 92.349(9)°. The final R value is 0.047 for 2301 reflections (I > 2.00 σ(I)). The coumarin and the pyrrole moieties are almost coplanar. The dihedral angle between the least-squares planes of the aromatic ring and the pyrrolyl group is 3.74(5)°.

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Crystal Structure of 7-(1H-pyrrol-1-yl)-4-trifluoromethyl-2H-1-benzopyran-2-one has been determined by X-ray diffraction. The crystal, C₁₄H₈NO₂F₃, belongs to space group P2₁/n with cell dimensions of a = 10.201(6)Å, b = 8.481(8)Å, c = 13.864(8)Å, β = 109.75(2)°. The final R value is 0.041 for 2602 reflections (I > 2.00 σ(I)). The coumarin and the pyrrole moieties are almost coplanar. The dihedral angle between the least-squares planes of the aromatic ring and the pyrrolyl group is 6.98(4)°.

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The crystal structure of 10H-4-methyl-2H-2-oxopyrano[5,6-b]carbazole hydrate was determined by X-ray diffraction. The crystal, 2C₁₆H₁₁NO₂·H₂O, belongs to space group P2₁/a with cell dimensions of a = 7.927(6)Å, b = 22.78(1)Å, c = 13.73(1)Å, β = 102.31(2)°. The final R value is 0.061 for 4651 reflections (I > 2.00 σ(I)). There are two independent coumarin molecules (A, B) and one water molecule in an asymmetric unit. Molecules A and B are linked through the N-H…O=C and the C=O…H-O(water)…H-N hydrogen bondings to form a cyclic hetero dimer.

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The title compound crystallizes in the orthorhombic space group Pbcn, with cell parameters a = 7.087(4), b = 9.139(5), c = 33.78(1)Å, V = 2188(2)Å and Z = 8. Its crystal structure was determined and refined to a final R = 0.05 (R_w = 0.07) for 1384 independent reflections. The atomic arrangement can be described as a layer organization built by H₂PO₄^- entities parallel to the ab plane around z = 1/4 and z = 3/4. Between these layers, the [p-CH₃OC₆H₄CH₂NH₃]⁺ organic cations are linked through their (-NH₃) groups to some oxygen atoms of the inorganic layers via N-H…O bonds, giving rise to a three-dimensional network.

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The crystal structure of 2,7-di-tert-butyl-10,11-diethoxycarbonyl-trans-9,12-epoxy-12b,12c-dimethyldihydro-benzo[e]pyrene 1 was determined by X-ray diffraction. The compound crystallized in the monoclinic system, space group P2₁/c, with a = 18.0711(14)Å, b = 6.6532(5)Å, c = 23.7853(19)Å, β = 95.252(3)°. V = 2847.7(4)ų, Z = 4, D_calc = 1.224 Mg/m³. Bond alternation of the dihydropyrene periphery was observed by X-ray crystallographic analyses.

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The title compound, C₁₉H₂₀FeN₂O₂, was synthesized as a good precursor of amino-ferrocenylphosphine, and its crystal structure was determined. This compound crystallizes in the triclinic space group P1, with a = 8.473(7)Å, b = 9.990(8)Å, c = 11.455(9)Å, α = 111.787(9)°, β = 97.008(10)°, γ = 104.440(10)°, Z = 2 , V = 846.7(12)ų. The final R value is 0.0473 for 4348 measured reflections. The angle between the phenyl ring and the substituted cyclopentadienyl plane is 17.6(2)°.

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The crystal structure of [GBH](ClO₄) (GB = 2-guanidinobenzimidazole) is triclinic, space group P1 with a = 7.3100(8), b = 7.5630(8), c = 10.9496(12)Å, α = 108.742(2), β = 91.402(2), γ = 104.590(2)° and Z = 2. The crystal structure was solved by direct methods and refined by full-matrix least squares to final values of R1 = 0.0433 and wR2 = 0.1275 with 1778 reflections (I > 2σ(I)). The [GBH](ClO₄) is involved in hydrogen bonding, [GBH]⁺ acting as a donor with an O and N atoms as acceptor.

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