Crystal Structures of Trigonal Planer of Silver(I) Complexes [Ag(ca₂en)(PPh₃)]X (1: X = PF₆, 2: X = BF₄) with the ca₂en Schiff-base Ligand

Abstract

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.