Augusto Cingolani, Effendy, Claudio Pettinari, Brian W. Skelton, Allan H. White
Novel solvated forms are spectroscopically (1H, 13C, 31P, IR and conductivity studies) and structurally described for diverse silver oxyanion salt:bis(diphenylphosphino)-ligand adducts of 2:1:n (AgX:dppx:S) stoichiometry. AgClO4:dppf:MeCN (2:1:4) ('dppf' = bis(diphenylphosphino)ferrocene) is a binuclear centrosymmetric species: [(O3ClO)(MeCN)2Ag(P-dppf-P′)Ag(NCMe)2(OClO3)], Ag-P short at 2.368(1) Å. Two MeOH/H2O solvates are described, of AgX:dppp (2:1) stoichiometry, both single stranded polymers (X = carboxylate: 'ac' = acetate, 'tfa' = trifluoroacetate; 'dppp' = Ph2P(CH2)xPPh2; x = 3), with silver atoms spanned alternately by: (i) a P-dppp-P′ bridge, supported by tenuously bridging water or methanol, and (ii) O-ac, tfa-O′ bridge(s), being assigned stoichiometries Agtfa:dppp:H2O (2:1:1) · MeOH and Agac : dppp : MeOH ( 2 : 1 : 0.5 ) · 3 frac(1, 2) H2 O. The structure of AgClO4:dppe:MeCN (1:1:1) ('dppe', x = 2), also a one-dimensional polymer, but with all Ag...Ag sequences bridged by the P,P′ ligand, and with unidentate MeCN and OClO3 coordinated to the silver, is also recorded. © 2005 Elsevier B.V. All rights reserved.
Dipartimento di Scienze Chimiche, Università degli Studi di Camerino, 62032 Camerino, MC, Via S. Agostino 1, Italy; Chemistry M313, School of Biomedical, Biomolecular and Chemical Sciences, University of Western Australia, Crawley, WA 6009, Australia; Jurusan Kimia, FMIPA Universitas Negeri Malang, Malang, 65145, Jalan Surabaya 6, Indonesia
