Charge-transfer interactions between bipyridinium ions and octacyano-molybdates and -tungstates

Abstract

Investigation of the interaction between the 4.4'-bipyridinium(2+) cation (4.4'-H,bipyz+) and the octacyanometalates(1v) [M (CN),I4-(Mo or W) led to the isolation of [4,4'-H2bipy],[W(CN,)]-4.5H,0 and its isomorphous molybdenum analogue. The spectroscopic properties of both and the X-ray structural characterization of the former [monoclinic, space group P2,/c, a = 11.281 (5). b = 9.1 98(5), c = 30.1 13(24) 8, p = 91.21 (5)O. Z = 4 1 are described. The [W(CN),I4-anion has an approximate square-antiprismatic D, configuration with average dimensions W-C 2.1 68, C-N 1.1 36

Preparation, spectra and thermal properties of two novel cyano-bridged complexes: crystal structure of one-dimensional copper(II)/palladium(II)

“…spectra of [Pd (CN) 4 ] 2À were observed at 194.0 nm, 208.0 nm, and 342.0 nm which were assigned to the transitions of 1 …”

“…and IR) properties of novel coordination polymers of Ni--Pd and Cu--Pd with the formula of [Ni(hydeten) 2 Pd (CN) 4 ] n and [Cu(hydeten) 2 Pd (CN) 4 ] n together with the crystal structure of the Cu--Pd complex has been reported. Elemental analyses were carried out by standard methods (TÛBİTAK Ankara Test and Analysis Laboratory, Turkey).…”

“…The immense scientific attention paid to the chemistry of the cyano-bridged coordination polymers is because of their interesting magnetic behaviour, unusual electronic states, and photochemical properties [4][5][6][7]. These properties made use of these compounds to develop new functional materials for catalysis, absorption and non-linear optics [8][9][10][11].…”

Preparations, IR spectra and crystal structures of cyano-bridged bimetallic complexes of zinc(II) and cadmium(II) with tetracyanopalladate(II)

“…Cyanocomplexes, especially tetracyanonickelate, have been systematically investigated [8][9][10], but very little has been published to date on the structures of tetracyanopalladate complexes [11][12][13]. As part of our ongoing research on cyanidebridged complexes, we have synthesized compounds 1 and 2; this article reports the syntheses, IR spectra and crystal structures of these one-dimensional heterometallic polymeric complexes, [Zn(hydet-en) 2 (1). KCN (0.147 g, 2.257 mmol) was added to 20 mL PdCl 2 (0.100 g, 0.564 mmol) solution in 1/4 ethanol-water mixture.…”

“…The coordination chemistry of cyanide-bridged metal complexes attracts interest because of their magnetic behaviour, unusual electronic states and photochemical properties [1][2][3][4]. The cyanide ion may coordinate either through the C atom, as a monodentate ligand, or through the C and N atoms as a bridging ligand, forming polymeric compounds with a one-, two-or three-dimensional networks.…”