New ansa-2,2-bis(eta-cyclopentadienyl)propane molybdenum and tungsten compounds and intramolecular hydrogen-deuterium exchange in methyl-hydride and ethyl-hydride derivatives

被引：57

作者：

Chernega, A

Cook, J

Green, MLH

Labella, L

Simpson, SJ

Souter, J

Stephens, AHH

机构：

[1] UNIV OXFORD,INORGAN CHEM LAB,OXFORD OX1 3QR,ENGLAND

[2] UNIV PISA,DIPARTIMENTO CHIM & CHIM IND,I-56126 PISA,ITALY

[3] UNIV SALFORD,DEPT CHEM & APPL CHEM,SALFORD M5 4WT,LANCS,ENGLAND

来源：

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | 1997年 / 18期

关键词：

D O I：

10.1039/a703725b

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The new compounds [Mo2Cl4(OEt)(4)(EtOH)(2)], [Mo{(eta C5H4)C(C5H10)(eta-C5H4)}Cl-2], [W{(eta-C(5)J(4))CMe2(eta-C5H4)-Cl-2][BF4], [W{(eta-C5H4)CMe2(eta-C5H4)}(SPh)(2)]* [W{(eta-C5H4)CMe2(eta-C5H4)}(SPri)(2)], [W{(eta-C5H4)CMe2-(eta-C5H4)}(SPri)(NCMe] ][BF4], [M{(eta-C5H4)CMe2(eta-C5H4)}(NCMe)Cl][PF6] (M = Mo or W),* [W{(eta-C5H4)-CMe2(eta-C5H4) ) (PPh3)Cl][PF5], [W{(eta-C5H4)CMe2(eta-C5H4)}(CNC6H3Me2-2,6)Cl][PF6],* [W{(eta-C5H4)CMe2(eta-C5H4)}(eta(2)-C2H4)][B(C6F5)(4)], *[eta-C5H4)}CMe2(eta-C5H4)}Et(NCMe)][B(C6F5)(4)], [W{(eta-C5H4)CMe2(eta-C5H4)}(eta(2)-C2H4)H][B(C6F5)(4), *(W{(eta-C5H4)CMe2(<eta-C5H4)}Et(CI)][BF4], [W{(eta-C5H4)CMe2(eta-C5H4)}H-3][PF6],* [M{(eta-C5H4)-CMe2(eta-C5H4)} Et-2] (M = Mo or W),* [W{(eta-C5H4)CMe2(eta-C5H4)}Et(I)], [W{(eta-C5H4)CMe2(eta-C5H4)}Et-(O2CPh)], [W{(eta-C5H4)CMe2(eta-C5H4)}Et(X)](X = H or D), [W{(eta-C5H4)CMe2(eta-C5H4)}(CD3)(2)], [W{(eta-C5H4)-CMe(eta-C5H4)} (CD3)I],* [W{(eta-C5H4)CMe2(eta-C5H4)}(CD3)H] and {W{(eta-C5H4)CMe2(eta-C5H4)}Me(D)] have been prepared, The asterisk indicates the crystal structure has been determined. Evidence is presented for intramolecular hydrogen-deuterium scrambling processes in the methyl-and ethyl-hydride compounds. Preliminary variable-temperature LH NMR studies on [W{(eta-C5H4)CMe2(eta-C5H4)}H-A(H-B)(2)][PF6] give a value for J(AB) of 16 000 Hz at -70 degrees C.

引用

页码：3225 / 3243

页数：19

共 59 条

[1] EXPERIMENTAL AND THEORETICAL EVIDENCE FOR DOUBLE-BONDS BETWEEN METAL ATOMS - DINUCLEAR ALKOXO-BRIDGED DITUNGSTEN(IV,IV) COMPLEXES, W2CL4(OR)4(ROH)2 [J].