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Titolo:
Structure and properties of the ion pair charge-transfer complex of octacyanotungstate(IV) with the 2,2 '-bipyridinium dication
Autore:
Szklarzewicz, J; Samotus, A; Nowicka, B; Burgess, J; Fawcett, J; Russell, DR;
Indirizzi:
Univ Leicester, Dept Chem, Leicester LE1 7RH, Leics, England Univ Leicester Leicester Leics England LE1 7RH er LE1 7RH, Leics, England Jagiellonian Univ, Fac Chem, PL-30060 Krakow, Poland Jagiellonian Univ Krakow Poland PL-30060 c Chem, PL-30060 Krakow, Poland
Titolo Testata:
TRANSITION METAL CHEMISTRY
fascicolo: 2, volume: 24, anno: 1999,
pagine: 177 - 182
SICI:
0340-4285(199904)24:2<177:SAPOTI>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
COORDINATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: Burgess, J Univ Leicester, Dept Chem, Leicester LE1 7RH, Leics, England Univ Leicester Leicester Leics England LE1 7RH Leics, England
Citazione:
J. Szklarzewicz et al., "Structure and properties of the ion pair charge-transfer complex of octacyanotungstate(IV) with the 2,2 '-bipyridinium dication", TRANSIT MET, 24(2), 1999, pp. 177-182

Abstract

The X-ray crystal structure of (bpyH(2))(2)[W(CN)(8)]. 4H(2)O (bpyH(2) = 2,2'-bipyridinium) is described. The [W(CN)(8)](4-) anion has an approximately square antiprismatic (D-4d) conformation, seemingly imposed by strong anion-water-cation hydrogen-bonding interactions. Bond distances in the anionare: W-C 2.150(5), 2.163(5); C-N 1.128(6), 1.145(6)Angstrom and the anglesW-C-N are 177.6(5), 178.3(5)degrees. The dihydrate and the anhydrous salt are both intensely black solids, exhibiting ion-pair charge-transfer interaction between cation and anion. E.s.r. spectra indicate that 30% of the tungsten is present as W-V in the solid state, but that in solution only the W-IV complex is present. The electron withdrawing effect of the cation is discussed and compared with that in a series of salts with different bipyridinium cations.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/03/20 alle ore 00:39:41