Low-dimensional compounds containing cyanido groups. XXIX. Crystal structures, spectral and magnetic properties of five [Cu(L)2X]C(CN)3 complexes (L = 2,2′-bipyridine or 1,10-phenanthroline; X = Cl−, Br− or CH3COO−)

Abstract

Low-dimensional compounds containing cyanido groups. XXIX. Crystal structures, spectral and magnetic properties of five [Cu(L) 2 X]C(CN) 3 complexes (L 5 2,2 0 -bipyridine or 1, 10-phenanthroline; X 5 Cl 2 , Br 2 or CH 3 COO 2 ) Abstract Five new ionic [Cu(L) 2 X]C(CN) 3 (L = 2,2 0 -bipyridine (bpy) or 1,10-phenanthroline (phen), X = Cl -, (4) and [Cu(phen) 2 Br 0.7 (CH 3 COO) 0.3 ]C(CN) 3 Á0.5H 2 O (5), have been synthesized and characterized by IR and UV-Vis spectroscopy. X-ray structural analysis revealed that the structures of all discussed compounds consist of [Cu(L) 2-X] ? complex cations and uncoordinated C(CN) 3 -counteranions; water molecules were found in 2, 3, 4 and 5; a molecule of ethanol was found in 4, too. The shapes of coordination polyhedra around the copper atoms, which are pentacoordinated by two bidentate bpy or phen molecules and Cl -, Br -or CH 3 COO -ligands monodentately coordinated in the equatorial plane, are distorted trigonal bipyramids. Structures of 1-5 are stabilized by weak p-p interactions and by hydrogen bonds. Magnetic properties of complexes 1-4 are characterized by the presence of weak antiferromagnetic exchange couplings.

Copper Complexes with 1,10-Phenanthroline Derivatives: Underlying Factors Affecting Their Cytotoxicity

“…The molecular structure of [Cu­(phen) 2 (H 2 O)]­(NO 3 ) 2 ( 1 ) was determined by single-crystal X-ray diffraction (SC-XRD), and the structural formula is schematically shown in Figure . , The crystal structure of [Cu­(Me 2 phen) 2 (NO 3 )]­NO 3 ( 2 ) was also previously determined . A few other related complexes were also structurally characterized, namely, [Cu­(phen) 3 ]­(ClO 4 ) 2 , [Cu­(phen) 2 (X)]­C­(CN) 3 (X = Cl, Br, MeCOO), several [Cu­(phen) 2 (OOCMe)]­(X) 2 (X = NO 3 , ClO 4 , BF 4 ), with fluxional CuN 4 O 2 structures, , [Cu­(phendione) 2 (H 2 O)­(OClO 3 )]­ClO 4 (phendione = 1,10-phenathroline-5,6-dione), and [Cu­(bipy) 2 (NO 3 )]­NO 3 . We expect complex 3 in the solid state to have either a NO 3 – ion coordinated as in 2 , or a water molecule as in 1 .…”

Construction of Coordination Polymers from Semirigid Ditopic 2,2′-Biimidazole Derivatives: Synthesis, Crystal Structures, and Characterization

“…The coordination geometry around the copper atom is square pyramidal with a N4ClCu binding set. 51,52 Each copper atom is coordinated by four pyridine nitrogen [Cu−N Py = 2.041(2) Å, 7). In these reaction conditions, the copper was reduced from Cu 2+ to Cu + and crystallized in monoclinic with P2 1 /c space group.…”

“…The coordination geometry around the copper atom is square pyramidal with a N4ClCu binding set. 51,52 Each copper atom is coordinated by four pyridine nitrogen [Cu−N Py = 2.041(2) Å, Cu−Cl…”

A CuII complex with an carbamoylcyanonitrosomethanide ligand formed in situ by the nucleophilic addition of water to dicyanonitrosomethanide: structure, spectral and magnetic properties

“…With the aim of studying the magnetic properties of complexes with different magnetic ions, we previously prepared and characterized a series of Cu II complexes with tcm anions (Petrovič et al, 2015), as well as a series of Co II complexes with bidentate N-donor neutral ligands and different pseudohalide anions (Vá hovská et al, 2014;Herchel et al, 2014;Vá hovská et al, 2018). Among the complexes, the Co II complex with the acnm ligand, formed by the nucleophilic addition of water to dcnm, was also prepared .…”