Bis(2,2′-bipyridine-κ² N,N′)(4-methylbenzoato-κ² O,O′)copper(II) iodide hemihydrate

Abstract

Key indicators: single-crystal X-ray study; T = 296 K; mean (C-C) = 0.010 Å; R factor = 0.047; wR factor = 0.149; data-to-parameter ratio = 14.5.The title compound, [Cu(C 8 H 7 O 2 )(C 10 H 8 N 2 ) 2 ]IÁ0.5H 2 O, was obtained by the hydrothermal reaction of copper(I) iodide, 4-methylbenzoic acid and 2,2 0 -bipyridine. The initial reactant of Cu I was oxidized to Cu II . The asymmetric unit contains two independent complex molecules, two I À ions and one water molecule. Each Cu II atom is coordinated by two O atoms from a 4-methylbenzoate ligand and four N atoms from two 2,2 0 -bipyridine ligands, displaying a distorted octahedral geometry.

Synthesis, Structural Characterization, Antimicrobial Activity, and In Vitro Biocompatibility of New Unsaturated Carboxylate Complexes with 2,2′-Bipyridine

“…The values of M–N and M–O bond lengths observed for mononuclear complexes ( 2 )–( 4 ) fall in the range reported for similar compounds with mixed ligands: 2,2′-bipyridine/2,2′-bipyridine derivatives and carboxylato derivatives (Table 5) [44,45,46,47,48]. …”

Stabilization of CuII–I Bonds Using 2‐Benzoylpyridine Thiosemicarbazones – Synthesis, Structure, Spectroscopy, Fluo­rescence, and Cyclic Voltammetry

“…Generally, iodide ions appear outside the coordination spheres of the various copper(II) complexes that have been reported previously. [1][2][3][4] However, there are a few reports of the formation of Cu II -I bonds, but nitrogen donor atoms contribute to the stabilization of molecular fluorescence, cyclic voltammetry, and single-crystal X-ray crystallography. The thio ligands coordinate as monoanionic N,N,S donors in 1-9.…”

“…[14,15] Furthermore, the solvent also played an important role in changing the stoichiometry of the resulting complexes. In a typical reaction, copper(I) iodide with HL 1 in an acetonitrile/chloroform mixture (2:1 v/v) in the presence of PPh 3 (1 or 2 mol) formed the iodido-bridged dimeric complex [Cu 2 (μ-I) 2 2 ], [16] unlike the mononuclear complex [Cu I I(HL 1 )(PPh 3 ) 2 ] formed in acetonitrile. [14] Similarly, the mononuclear complex [ 4 ]} n formed in an acetonitrile/chloroform mixture.…”

2-Benzoylpyridine thiosemicarbazone as a novel reagent for the single pot synthesis of dinuclear CuI–CuII complexes: formation of stable copper(ii)–iodide bonds

“…In our curiosity to observe the effect of Ph, py substituents at C 2 carbons, we have come across unusual coordination behaviour of 2-benzoylpyridine thiosemicarbazone (Hbpytsc, R 1 , R 2 = Ph, py) during equimolar reactions with copper(I) iodide/bromide in the presence and absence of triphenyl phosphine. The formation of the halogen-bridged Cu II dinuclear complexes (1,3) in the presence of Ph 3 P along with the sulfur-bridged Cu I dinuclear complexes (2, 4) and the novelty of 2-benzoylpyridine thiosemicarbazone to stabilize formation of copper(II)-iodide bonds are described herein.…”

“…It generally appears outside the coordination sphere, as exemplified by copper(II) complexes, [CuL]I {L = 2(2-aminoethyl)pyri-dine}, 1 [CuClL 2 ]I {L = 1,10-phenanthroline}, 2 and [CuLL′ 2 ]I {L = 4-methylbenzoic acid, L′ = 2,2′-bipyridine}. 3 However, in the literature, polydentate N-donor ligands have been used for the formation of copper(II)-iodide bonds with distances of 2.56-2.74 Å. 4,5 In one case with a chiral N-donor ligand, a short Cu II -I distance (2.337 Å) has also been reported.…”