Protonation of platinum(II) pyrazolates:: synthesis, characterization and X-ray crystal structure of [Pt(dppe)(Hpz-N)2][BF4]2•CHCl3•H2O (Hpz-N = unsubstituted pyrazole)

被引：0

作者：

Bandini, AL

Banditelli, G

Bovio, B

机构：

[1] Univ Studi, Ctr CNR, Dipartimento Chim Inorgan Met Organ & Analit, I-20133 Milan, Italy

[2] Univ Studi, Dipartimento Chim Gen, I-27100 Pavia, Italy

来源：

POLYHEDRON | 2001年 / 20卷 / 22-23期

关键词：

pyrazole; mono- and dinuclear complexes; platinum(II); N-ligands; P-ligands; X-ray crystal structures;

D O I：

暂无

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

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 complex 3, (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.

引用

页码：2869 / 2875

页数：7

共 45 条

[1]

[Anonymous], 1974, INT TABLES XRAY CRYS, VIV

[2] Polynuclear pyrazolato complexes. Synthesis, chemical reactivity and crystal structures of [{Pd(dmpz)(2)(Hdmpz)(2)}(2)] and [{PdAg2(dmpz)(4)}(2)] (Hdmpz=3,5-dimethylpyrazole) [J].