Synthesis and Crystal Structure of a Chain Complex of Rhodium(II) Pivalate and trans-1,2-Bis(4-pyridyl)ethylene with an N₂-Adsorption Property

Abstract

The title compound, a chain adduct of rhodium(II) pivalate with trans-1,2-bis(4-pyridyl)ethylene (bpel), [Rh₂(piv)₄(bpel)]·4CH₃CN, was isolated, and the crystal structure was determined by the single-crystal X-ray diffraction method at 293 K. It crystallizes in the orthorhombic space group Immm with a = 12.010(4)Å, b = 12.371(4)Å, c = 16.193(6)Å, V = 2405.8(14)ų, D_x = 1.321 g/cm³, and Z = 2. The R1 [I > 2σ(I)] and wR2 (all data) values are 0.0262 and 0.0659, respectively, for all 1614 independent reflections. The molecule is a linear chain molecule with an alternating arrangement of Rh₂(piv)₄ [Rh-Rh 2.3928(9)Å] and bpel. The adsorption property was confirmed for N₂.