A TRIPLET BIRADICAL ORGANOCALCIUM SPECIES DERIVED FROM PARTIAL OXYGEN QUENCHING OF A SUBSTITUTED CYCLOPENTADIENYL CALCIUM COMPOUND

被引：12

作者：

GARDINER, MG

HANSON, GR

JUNK, PC

RASTON, CL

SKELTON, BW

WHITE, AH

机构：

[1] GRIFFITH UNIV,FAC SCI & TECHNOL,NATHAN,QLD 4111,AUSTRALIA

[2] UNIV QUEENSLAND,CTR MAGNET RESONANCE,BRISBANE 4072,AUSTRALIA

[3] UNIV WESTERN AUSTRALIA,DEPT CHEM,NEDLANDS,WA 6009,AUSTRALIA

来源：

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS | 1992年 / 16期

关键词：

D O I：

10.1039/c39920001154

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Reaction of [Ca{C5H3-1,3-(SiMe3)2}2] 1, in toluene with oxygen yields the stable, rigid biradical [Ca{eta-C5H3-1,3-(SiMe3)2} {mu-OC5H2-2,4-(SiMe3)2}]2 2, characterised by an X-ray structure determination [Ca-O 2.298(3), 2.210(3) angstrom; Ca-centroid 2.374(-)-degrees; Ca-O-Ca 105.4(1)-degrees; O-Ca-centroid 149.4(-), 125.8(-)-degrees] and EPR spectroscopy (resonance at g = 9.01, 4.21, 3.87 result from a super-exchange interaction between two unpaired electrons in the biradical).

引用

页码：1154 / 1156

页数：3

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[21] SYNTHESIS AND CRYSTALLOGRAPHIC CHARACTERIZATION OF (ME5C5)2CA(ME3SIC=C-C=CSIME3) - THE 1ST MONOMERIC DIYNE COMPLEX OF A MAIN-GROUP ELEMENT [J].