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Titolo:
Protonation of platinum(II) pyrazolates: synthesis, characterization and X-ray crystal structure of [Pt(dppe)(Hpz-N)(2)][BF4](2)center dot CHCl3 center dot H2O (Hpz-N = unsubstituted pyrazole)
Autore:
Bandini, AL; Banditelli, G; Bovio, B;
Indirizzi:
Univ Studi, Ctr CNR, Dipartimento Chim Inorgan Met Organ & Analit, I-20133Milan, Italy Univ Studi Milan Italy I-20133 n Met Organ & Analit, I-20133Milan, Italy Univ Studi, Dipartimento Chim Gen, I-27100 Pavia, Italy Univ Studi PaviaItaly I-27100 partimento Chim Gen, I-27100 Pavia, Italy
Titolo Testata:
POLYHEDRON
fascicolo: 22-23, volume: 20, anno: 2001,
pagine: 2869 - 2875
SICI:
0277-5387(20011015)20:22-23<2869:POPPSC>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
MOLECULAR-STRUCTURE; HYDRONIUM TETRAFLUOROBORATE; STOICHIOMETRIC COMPLEX; COORDINATION CHEMISTRY; BRIDGING LIGANDS; DERIVATIVES; REACTIVITY; 18-CROWN-6; 1,2-BIS(DIPHENYLPHOSPHINO)ETHANE; PALLADIUM(II);
Keywords:
pyrazole; mono- and dinuclear complexes; platinum(II); N-ligands; P-ligands; X-ray crystal structures;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
44
Recensione:
Indirizzi per estratti:
Indirizzo: Bandini, AL Univ Studi, Ctr CNR, Dipartimento Chim Inorgan Met Organ & Analit, Via Venezian 21, I-20133 Milan, Italy Univ Studi Via Venezian 21 Milan Italy I-20133 3 Milan, Italy
Citazione:
A.L. Bandini et al., "Protonation of platinum(II) pyrazolates: synthesis, characterization and X-ray crystal structure of [Pt(dppe)(Hpz-N)(2)][BF4](2)center dot CHCl3 center dot H2O (Hpz-N = unsubstituted pyrazole)", POLYHEDRON, 20(22-23), 2001, pp. 2869-2875

Abstract

Protonation reactions of [Pt(dppe)(pz-N)(2)] (1) carried out either with HBF4(aq) or with [18-crown-6 .H3O][BF4], afford the new pyrazole adduct [Pt(dppe)(Hpz-N)(2)][BF4](2) (3) characterized by analytical, infrared and multinuclear NMR data. Deprotonation of 3 as well as protonation of 1, under controlled conditions, give the known binuclear Pt(II) pyrazolato complex [Pt(dppe)(mu -pz-N,N'](2)[BF4](2) (2). Competitive formation of mono-, 3, and dinuclear, 2, compounds is discussed. The structure of a solvate of complex3, (C33H35B2N4OF8Cl3P2Pt), was solved by X-ray diffraction. The platinum atom exhibits a distorted square-planar geometry (P-Pt-P angle 85.3(1)degrees and N-Pt-N angle 87.0(4)degrees). The geometry around the B atom is tetrahedral. The hydrogen bonds between the pyrazole rings and one BF4- orientate the pyrazoles roughly in the same direction, away from the coordination plane. (C) 2001 Published by Elsevier Science Ltd.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/09/20 alle ore 23:36:07