The use of CoCl2(amidine)(2) compounds in the synthesis of tetragonal lantern dicobalt compounds: Synthesis, structures and theoretical studies of Co-2(DPhF)(4) and the oxidized species [Co-2(DPhBz)(4)](+) (DPhF=N,N'-diphenylformamidinate, DPhBz=N,N'-diphenylbenzamidinate) .4.

被引：41

作者：

Cotton, FA ^{[1
]}

Daniels, LM ^{[1
]}

Feng, XJ ^{[1
]}

Maloney, DJ ^{[1
]}

Matonic, JH ^{[1
]}

Murillo, CA ^{[1
]}

机构：

[1] UNIV COSTA RICA, DEPT CHEM, SAN JOSE, COSTA RICA

来源：

INORGANICA CHIMICA ACTA | 1997年 / 256卷 / 02期

关键词：

crystal structures; cobalt complexes; amidinate complexes; tetragonal lantern complexes; dinuclear complexes;

D O I：

10.1016/S0020-1693(96)05472-2

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

CoCl2(PhNC(R)N(H)Ph)(2) complexes (R=H and Ph) have been reacted with methyllithium to produce the corresponding lantern-type Co-2(amidinato)(4) compounds containing cobalt-cobalt bonds of order one. One of them, Co-2(DPhBz)(4)(DPhBz=diphenylbenzamidinato), was oxidized by AgPF6 to yield [Co-2(DPhBz)(4)](PF6). 2.4CH(2)Cl(2). Crystal data for Co-2(DPhF)(4) (I) (DPhF=diphenylformamidinato) at 0 degrees C are: monoclinic, space group C2/c, a=13.927(3), b=13.678(3), c=22.855(5) Angstrom, beta=91.37(2)degrees, Z=4. For [Co-2(DPhBz)(4)](PF6). 2.4CH(2)Cl(2) (II) at -60 degrees C: triclinic, space group P1, a=13.838(4), b=13.881(4), c=19.62(1) Angstrom, alpha=89.7(1), beta=99.76(4), gamma=91.04(4)degrees, Z=2. The metal-to-metal distances are 2.3735(9) Angstrom for complex I and 2.322(2) and 2.332(2) Angstrom for two crystallographically independent molecules found in complex II. The latter are slightly longer than those found in the parent neutral molecule. The experimental cobalt-to-cobalt separations are in good agreement with those obtained from ab initio quantum chemical calculations.

引用

页码：291 / 301

页数：11

共 38 条

[1] Divalent metal chloride amidine complexes .2. Compounds of Mn, Co and Ni [J].