The structures of bis(2,2'-bipyridyl)mononitritocopper(II) tetrafluoroborate and bis(2,2'-bipyridyl)mononitritozinc(II) nitrate

Abstract

Abstracthost lattice, the crystal structure of [Zn(bpy) 2-(ONO)]NO 3 (2) has also been determined. Crystals of (2) were prepared as reported by Proctor, Hathaway, Billing, Dudley & Nicholls (1969) for the pure Cu n complex with the stoichiometric amount of Zn(NO3)2.6H20. Large crystals were obtained if methanol rather than ethanol was used in the preparation. (Composition: found: C = 49.07, H = 3.52, N = 17.34, Zn = 13.29%; C20H~6N 5-O2Zn+.NO3 requires: C = 49. 44, H = 3.29, N = 17.30, Zn = 13.46%.)

Preparation and Antibacterial Activity of Copper and Cobalt Complexes of 4-Chloro-3-nitrobenzoate with a Nitrogen Donor Ligand

“…17) The results are well supported by the elemental analysis data. The formation of unidentate complexes with copper and bidentate complexes with cobalt for each type of the diamine ligand is consistent with the tetrahedral nature of the copper complexes and the octahedral nature of the cobalt complexes, 18,19) as shown in Fig. 1.…”

Copper(II) complexes with sparfloxacin and nitrogen-donor heterocyclic ligands: Structure–activity relationship

“…The distortion of the geometry can also be assumed based on the shape of electronic spectra. The presence of two d-d transitions is consistent with distorted square pyramidal geometry [47] while the appearance of a single d-d transition supports a trigonal distorted square pyramidal geometry [46].…”

“…In general, the distortion is restricted to a trigonal distortion of the square pyramidal stereochemistry [46] and a square pyramidal distortion of the trigonal bipyramidal stereochemistry [47] with the sense of the distortion related by the mechanistic pathway of Berry's twist for these five coordinate geometries [40]. The distortion of the geometry can also be assumed based on the shape of electronic spectra.…”

Structural characterisation of mononuclear zinc(ii) complexes of 4-methyl-3,5-di(2-pyridyl)-4H-1,2,4-triazole with three-atom co-ligands: [ZnII(medpt)2X]ClO4 (X = NCS−, N3 −, NO2 −)

“…In addition, in all other previously reported related complexes, the Zn-O distances are in the range 2.197(3)-2.274(4)°with only minor differences of the two distances within the same structure (ca. ± 0.02 Å ) [36][37][38][39][40][41]. In [Zn II (medpt) 2 (NO 2 )]ClO 4 , the two Zn-O distances vary greatly, by ca.…”