The interaction of Lewis acidic boron derivatives with Re(CO)5−nH(PMe3)n complexes
作者:Xiang-Yang Liu、Soraya Bouherour、Heiko Jacobsen、Helmut W. Schmalle、Heinz Berke
DOI:10.1016/s0020-1693(01)00828-3
日期:2002.3
and trans -Re(CO)(PMe 3 ) 4 H ( 1 ) and ( 2 ), mer -Re(CO) 2 (PMe 3 ) 3 H ( 3 ), fac -Re(CO) 2 (PMe 3 ) 3 H ( 4 ) and trans -Re(CO) 3 (PMe 3 ) 2 H ( 5 ) were studied with BH 3 and 9-borabicyclo[3,3,1] norbonane (BBNH). Using BH 3 ·THF and (BBNH) 2 1 and 2 afforded Re(CO)(PMe 3 ) 3 (η 2 -BH 4 ) ( 6 ) and Re(CO)(PMe 3 ) 3 (η 2 -BBNH 2 ) ( 7 ) as stable and isolable products. VT IR studies established for
摘要氢化物顺-和反-Re(CO)(PMe 3)4 H(1)和(2),mer -Re(CO)2(PMe 3)3 H(3),fac -Re的路易斯酸加合物使用BH 3和9-borabicyclo [3,3,1]降冰片烷(BBNH)研究了(CO)2(PMe 3)3 H(4)和反式-Re(CO)3(PMe 3)2 H(5) 。使用BH 3·THF和(BBNH)2 1和2得到Re(CO)(PMe 3)3(η2 -BH 4)(6)和Re(CO)(PMe 3)3(η2 -BBNH 2) (7)作为稳定和可分离的产物。VT IR研究确定了与BBNH首先在预平衡中与1或2的O CO原子连接的7的反应。在较高温度下,会发生ReH加合物的形成,并瞬间转化为7,并消除PMe 3·BBNH。以类似的方式,氢化物3和4用BH 3·THF和(BBNH)2转化,得到稳定的络合物Re(CO)2(PMe 3)2(η2 -BH