An unexpected tetranuclear Li2Cr2 trimethylsilylacetylide complex bridged by two μ3-pyrazolates

A tetranuclear Li2Cr2 acetylide precursor complex, [Li（Tp）crm（c=CSiMe3）2（/,t3-pz）]2· （n-pentane）2 （Tp = hydridotris（pyra- zolyl）borate, pz = pyrazolate）（1） has been synthesized and characterized. The X-ray structure analysis shows that the complex contains a Li2Cr2 core bridged by two ,u3-pyrazolat...

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Veröffentlicht in:	Science China. Chemistry 2012-06, Vol.55 (6), p.914-917
Hauptverfasser:	Wang, Feng, Cao, Li, Liao, HongLin, Jiang, Jun, Jia, XiaoLu, Gao, Qian, Li, DongFeng
Format:	Artikel
Sprache:	eng
Schlagworte:	Antiferromagnetism Chemistry Chemistry and Materials Science Chemistry/Food Science Communications CRM Structural analysis X-射线反铁磁相互作用四核数据表桥接正戊烷结构分析
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Zusammenfassung:	A tetranuclear Li2Cr2 acetylide precursor complex, [Li（Tp）crm（c=CSiMe3）2（/,t3-pz）]2· （n-pentane）2 （Tp = hydridotris（pyra- zolyl）borate, pz = pyrazolate）（1） has been synthesized and characterized. The X-ray structure analysis shows that the complex contains a Li2Cr2 core bridged by two ,u3-pyrazolates. The magnetic data exhibit the existence of weak antiferromagnetic in- teraction in the cluster.
ISSN:	1674-7291 1869-1870
DOI:	10.1007/s11426-012-4560-7