Kinetics of formation of dihydrogen complexes by protonation of CpRuHL complexes (L = DPPM, DPPE, 2 PPh3) with HBF4•Et2O in THF and the failure to observe dihydrogen complexes in the reactions with other acids

被引:17
作者
Basallote, MG [1 ]
Durán, J [1 ]
Fernández-Trujillo, MJ [1 ]
Máñez, MA [1 ]
机构
[1] Univ Cadiz, Fac Ciencias, Dept Ciencia Mat & Ingn Met & Quim Inorgan, Cadiz 11510, Spain
关键词
D O I
10.1021/om9907775
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The second-order rate constants for the reactions of the title complexes with HBF4 in THF do not correlate with the previously reported pK(a)'s of these complexes. The lack of formation of dihydrogen complexes in their reactions with HCl, HBr, or CF3COOH in THF and acetone solutions indicates the limited validity of predictions based on aqueous pK(a) scales.
引用
收藏
页码:695 / 698
页数:4
相关论文
共 22 条
[21]   KINETIC AND THERMODYNAMIC ACIDITY OF HYDRIDO TRANSITION-METAL COMPLEXES .3. THERMODYNAMIC ACIDITY OF COMMON MONONUCLEAR CARBONYL HYDRIDES [J].
MOORE, EJ ;
SULLIVAN, JM ;
NORTON, JR .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1986, 108 (09) :2257-2263
[22]   Protonation and H2 heterolysis reactions of electrophilic (η5-C5R5)Ru(dfepe)(X) (R = H, Me; X = H, OTf) complexes [J].
Ontko, AC ;
Houlis, JF ;
Schnabel, RC ;
Roddick, DM ;
Fong, TP ;
Lough, AJ ;
Morris, RH .
ORGANOMETALLICS, 1998, 17 (25) :5467-5476