Coordination properties of the multifunctional S,N,S zwitterionic ligand EtNHC(S)Ph2P=NPPh2C(S)NEt

被引：6

作者：

Cauzzi, Daniele ^{[1
]}

Delferro, Massimiliano ^{[1
]}

Graiff, Claudia ^{[1
]}

Pattacini, Roberto ^{[1
]}

Predieri, Giovanni ^{[1
]}

Tiripicchio, Antonio ^{[1
]}

机构：

[1] Univ Parma, Dipartimento Chim Gen & Inorgan, I-43100 Parma, Italy

来源：

COORDINATION CHEMISTRY REVIEWS | 2010年 / 254卷 / 5-6期

关键词：

Amino-phosphanes; Isothiocyanate; Zwitterion; Coordination mode; Rhodium; Copper; Silver; Gold; Ruthenium; Carbonyl clusters; Zwitterionic metallates; Acid-base properties; Oxidative addition; Metalloligands; CRYSTAL-STRUCTURE; CHEMICAL-SHIFTS; ACIDITY SCALE; COMPLEXES; ISOTHIOCYANATES; RUTHENIUM; ADDUCTS; DICHLOROMETHANE; EQUILIBRIUM; PHOSPHONIUM;

D O I：

10.1016/j.ccr.2009.10.019

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The reaction of trialkylphoshanes and amino-phosphanes with isothiocyanates yields adducts containing the zwitterionic thioamidyl-phosphonium P+C(S)N- functional group. Ligands containing this group were not previously Studied, probably due to their instability towards dissociation, in the presence of metal species able to coordinate the P atom. The ligand EtNHC(S)Ph2P=NPPh2C(S)NEt (HEtSNS) was obtained by reaction of Ph2PNHPPh2 with ethylisothiocyanate and proved to be very versatile: it can be protonated giving cation H2EtSNS+ and deprotonated forming the dianion-cation EtSNS-. HEtSNS and its derivatives behave as ligands showing five possible coordination fashions. S,N,S tridentate and S,S-bidentate (with a bite-angle varying from 180 degrees to 90 degrees), S-monodentate, S,S bridging and N,N,N interaction. Here we describe the coordination chemistry of HEtSNS, in particular towards Rh, Cu, Ag and Au, and some properties of its complexes which are still the only examples containing the P+C(S)N- zwitterionic group. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：753 / 764

页数：12

共 30 条

[21] An acidity scale of tetrafluoroborate salts of phosphonium and iron hydride compounds in [D2]dichloromethane [J].