NMR: A good tool to ascertain σ-silane or σ-borane formulations?

被引:138
作者
Alcaraz, Gilles [1 ]
Sabo-Etienne, Sylviane [1 ]
机构
[1] CNRS, Chim Coordinat Lab, 205 Route Narbonne, F-31077 Toulouse 04, France
关键词
NMR; Transition metals; sigma-Complexes; Silanes; Boranes; Dihydrogen; Oxidative addition;
D O I
10.1016/j.ccr.2008.02.006
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
NMR has played a major role in the characterization of dihydrogen complexes and a number of polyhydrides have been reformulated as dihydrogen complexes on the basis of NMR data. If dihydrogen complexes remain the most widely studied class of sigma-complexes, silane compounds are also well recognized as an important family of sigma-complexes and more recently a few sigma-borane compounds have been isolated. One important problem is the discrimination between a a-formulation and the corresponding hydrido(silyl) or hydrido(boryl) oxidative addition product. In this review we will discuss key literature data on silane and borane complexes to illustrate the benefit gained by using multinuclear NMR spectroscopy to better define the structures and bonding modes. Our goal is also to help the reader to appreciate the limits of the method and to provide valuable insights into the problem of secondary interactions. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:2395 / 2409
页数:15
相关论文
共 91 条
[21]   Structure and reactivity of bis(silyl) dihydride complexes (PMe3)3Ru(SiR3)2(H)2:: Model compounds and real intermediates in a dehydrogenative C-Si bond forming reaction [J].
Dioumaev, VK ;
Yoo, BR ;
Procopio, LJ ;
Carroll, PJ ;
Berry, DH .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (29) :8936-8948
[22]   Synthesis and reactivity of silyl ruthenium complexes: The importance of trans effects in C-H activation, Si-C bond formation, and dehydrogenative coupling of silanes [J].
Dioumaev, VK ;
Procopio, LJ ;
Carroll, PJ ;
Berry, DH .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (26) :8043-8058
[23]  
Duer MJ., 2002, SOLID STATE NMR SPEC
[24]   Dimesitylborane monomer-dimer equilibrium in solution, and the solid-state structure of the dimer by single crystal neutron and X-ray diffraction [J].
Entwistle, CD ;
Marder, TB ;
Smith, PS ;
Howard, JAK ;
Fox, MA ;
Mason, SA .
JOURNAL OF ORGANOMETALLIC CHEMISTRY, 2003, 680 (1-2) :165-172
[25]   Cleavage of carbon-carbon bonds in aromatic nitriles using nickel(0) [J].
Garcia, JJ ;
Brunkan, NM ;
Jones, WD .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (32) :9547-9555
[26]   Cleavage of carbon-carbon bonds in alkyl cyanides using nickel(0) [J].
García, JJ ;
Arévalo, A ;
Brunkan, NM ;
Jones, WD .
ORGANOMETALLICS, 2004, 23 (16) :3997-4002
[27]   Synthesis, neutron structure, and reactivity of the bis(dihydrogen) complex RuH2(η2-H2)2(PCyp3)2 stabilized by two tricyclopentylphosphines [J].
Grellier, M ;
Vendier, L ;
Chaudret, B ;
Albinati, A ;
Rizzato, S ;
Mason, S ;
Sabo-Etienne, S .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (50) :17592-17593
[28]   Rhodium boryl complexes in the catalytic, terminal functionalization of alkanes [J].
Hartwig, JF ;
Cook, KS ;
Hapke, M ;
Incarvito, CD ;
Fan, YB ;
Webster, CE ;
Hall, MB .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (08) :2538-2552
[29]   Mechanistic studies of titanocene-catalyzed alkene and alkyne hydroboration: Borane complexes as catalytic intermediates [J].
Hartwig, JF ;
Muhoro, CN .
ORGANOMETALLICS, 2000, 19 (01) :30-38
[30]   TRANSITION-METAL BORYL COMPLEXES - STRUCTURE AND REACTIVITY OF CPFE(CO)2BCAT AND CPFE(CO)2BPH2 [J].
HARTWIG, JF ;
HUBER, S .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1993, 115 (11) :4908-4909