SYNTHESIS AND CHARACTERIZATION OF RHENIUM POLYHYDRIDES STABILIZED BY THE TRIPODAL LIGAND MEC(CH2PPH2)3

被引：21

作者：

BIANCHINI, C ^{[1
]}

PERUZZINI, M ^{[1
]}

ZANOBINI, F ^{[1
]}

MAGON, L ^{[1
]}

MARVELLI, L ^{[1
]}

ROSSI, R ^{[1
]}

机构：

[1] UNIV FERRARA,CNR,DIPARTIMENTO CHIM,CHIM NUCL INORGAN LAB,I-44100 FERRARA,ITALY

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 1993年 / 451卷 / 1-2期

关键词：

D O I：

10.1016/0022-328X(93)83013-L

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The reaction Of CH3C(CH2PPh2)3 (trPhos) with [Re(O)Cl3(PPh3)2] in THF at reflux temperature yields [(eta2-triphos)Re(O)Cl3] (3). Compound 3 is transformed into [(eta2-triphos)ReH7] (4) by treatment with LiAlH4 in refluxing THF. The reaction of [Re(MeCN)Cl3(PPh3)2] With triphos in refluxing toluene gives fac-[(eta3-triphos)ReCl3] (5) in excellent yield. Complex 5 is converted to the classical pentahydride [(eta3-triphos)ReH5] (6) by treatment with NaBH4 at room temperature. The reductive elimination of H-2 from 6 is promoted by monodentate ligands such as PPh3 and CO, giving substitution products of the formula [(eta3-triphos)ReH3(L)] (L = PPh3 (7) or CO (8)). All the rhenium polyhydrides obtained have been characterized by spectroscopic techniques including IR and multinuclear variable-temperature NMR analysis. A detailed study of the spin-lattice relaxation time (T1) at variable temperature has shown that T1 cannot be used unambiguously to discriminate between classical and non-classical structures of rhenium polyhydrides.

引用

页码：97 / 106

页数：10

共 96 条

[1] HYDRIDIC ATOM ARRANGEMENT AND BONDING IN THE MOLECULAR-STRUCTURE OF (C2H5)4N+[RE2(MU-H)3H6(CH3C(CH2P(C6H5)2)3)]-.CH3CN - A COMPLEX CONTAINING 10-COORDINATED RHENIUM [J].