DIHYDROBIS(3,5-DIMETHYLPYRAZOLYL)BORATE DERIVATIVES OF F-ELEMENTS

被引：41

作者：

CARVALHO, A ^{[1
]}

DOMINGOS, A ^{[1
]}

GASPAR, P ^{[1
]}

MARQUES, N ^{[1
]}

DEMATOS, AP ^{[1
]}

SANTOS, I ^{[1
]}

机构：

[1] LNETI,ICEN,DEPT QUIM,P-2686 SACAVEM,PORTUGAL

来源：

POLYHEDRON | 1992年 / 11卷 / 12期

关键词：

D O I：

10.1016/S0277-5387(00)83141-1

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The trivalent chlorides of U, Ce, Sm and Yb react readily in THF with KH2B(3,5-Me2Pz)2 to yield the complexes M[H(mu-H)B(3,5-Me2Pz)2]3. The crystal and molecular structures of U[H(mu-H)B(3,5-Me2Pz)2]3 and Sm[H(mu-H)B(3,5-Me2Pz)2]3 have been determined. The compounds are isomorphous with the six nitrogen donor atoms of the bischelating ligands arranged in a trigonal prismatic geometry. Each of the three rectangular faces of the trigonal prism is capped by a bridging B-H ... M three centre bond, leading to compounds where the metal centres are formally nine-coordinate. The synthesis and characterization of the related U(IV) derivatives UCl2[H2B(3,5-Me2Pz)2]2 and U(OBu(t))2 [H2B(3,5-Me2Pz)2]2 are also reported. The crystal and molecular structure of {UCl[H(mu-H) B(3,5-Me2Pz)2][H(mu-O)B(3,5-Me2Pz)2]2}2, a dimeric complex formed during the recrystallization of UCl2[H2B(3,5-Me2Pz)2]2, is also presented. Each uranium centre is eight-coordinate and displays square antiprismatic geometry, distorted towards the dodecahedron.

引用

页码：1481 / 1488

页数：8

共 15 条

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