An unambiguous electron-counting notation for metallaboratranes

被引:156
作者
Hill, Anthony F. [1 ]
机构
[1] Australian Natl Univ, Res Sch Chem, Inst Adv Studies, Canberra, ACT, Australia
关键词
D O I
10.1021/om0602512
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
A cohesive notation for indicating the overall number of electrons associated with metallaboratanes and metal-boron (M-B) dative unit that eliminated confusion arising from electron-counting formalisms was investigated. Metallaboratanes are a new class of compound in which a metal-boron dative is housed within a cage or chelated structure and the majority of such complexes were developed from investigations of the chemistry of poly(methimazolyl) borates. It is anticipated that as the field of metallaboratanes develops, a spectrum of behavior for the M-B bond will emerge, involving different degrees of electron transfer from the metal to the Lewis acid. The results of computational studies of the two metallaboratanes are distinct to provide a gradation of M-B dative interactions. It is expected that more subtleties will emerge from computational studies of metallaboratanes, with several factors contributing to the Lewis basicity of a transition metal.
引用
收藏
页码:4741 / 4743
页数:3
相关论文
共 26 条
[1]  
BELL LK, 1983, INORG CHEM, V22, P349
[2]   Rhodium(I) complexes of a PBP ambiphilic ligand:: Evidence for a metal → borane interaction [J].
Bontemps, SB ;
Gornitzka, H ;
Bouhadir, G ;
Miqueu, K ;
Bourissou, D .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2006, 45 (10) :1611-1614
[3]   A boryl bridged complex:: An unusual coordination mode of the BR2 ligand [J].
Braunschweig, H ;
Radacki, K ;
Rais, D ;
Whittell, GR .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2005, 44 (08) :1192-1194
[4]   COMPOUNDS WITH BORON AT THE BRIDGEHEAD - A STUDY OF THE STERIC CONSEQUENCES OF PLANAR BORON [J].
BROWN, HC ;
FLETCHER, EA .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1951, 73 (06) :2808-2813
[5]   Reactions of bis(pentafluorophenyl)borane with Cp2Ta(=CH2)CH3:: Generation and trapping of tantalocene borataalkene complexes [J].
Cook, KS ;
Piers, WE ;
Woo, TK ;
McDonald, R .
ORGANOMETALLICS, 2001, 20 (18) :3927-3937
[6]   Metallaboratranes: Tris(methimazolyl)borane complexes of rhodium(I) [J].
Crossley, IR ;
Hill, AF ;
Willis, AC .
ORGANOMETALLICS, 2006, 25 (01) :289-299
[7]   Poly(methimazolyl)borate complexes of platinum [J].
Crossley, IR ;
Hill, AF ;
Willis, AC .
ORGANOMETALLICS, 2005, 24 (21) :4889-4892
[8]   The first bimetallic metallaboratrane:: [Rh2{B(mt)3}2{k2-S,S′-HB(mt)3]Cl and its synthesis from the fluxional rhodaboratrane salt [Rh{B(mt)3}(η4-C8H12)]Cl, (Rh→B, mt = methimazolyl) [J].
Crossley, IR ;
Hill, AF ;
Humphrey, ER ;
Willis, AC .
ORGANOMETALLICS, 2005, 24 (16) :4083-4086
[9]   Formation of metallaboratranes:: The missing link.: The first iridaboratranes, [IrH(CO)(PPh3){κ3-B,S,S′-B(mt)2R}](Ir→B) (mt = methimazolyl, R = mt, H) [J].
Crossley, IR ;
Hill, AF ;
Willis, AC .
ORGANOMETALLICS, 2005, 24 (06) :1062-1064
[10]   The first rhodaboratrane:: [RhCl(PPh3){B(mt)3}](Rh→B) (mt = methimazolyl) [J].
Crossley, IR ;
Foreman, MRS ;
Hill, AF ;
White, AJP ;
Williams, DJ .
CHEMICAL COMMUNICATIONS, 2005, (02) :221-223