An unexpected tetranuclear Li_2Cr_2 trimethylsilylacetylide complex bridged by two μ_3-pyrazolates  

作　　者：WANG Feng CAO Li LIAO HongLin JIANG Jun JIA XiaoLu GAO Qian LI DongFeng 

机构地区：[1]Key Laboratory of Pesticide and Chemical Biology of Ministry of Education,College of Chemistry,Central China Normal University,Wuhan 430079,China

出　　处：《Science China Chemistry》2012年第6期914-917,共4页中国科学(化学英文版)

基　　金：financially supported by the National Natural Science Foundation of China (20801022, 21172084);the Program for New Century Excellent Talents in University of China (NCET-10-0406);the Program for Changjiang Scholars and Innovative Research Team in University (IRT0953);Self-Determined Research Funds of CCNU from the Col- leges' Basic Research and Operation of MOE (CCNU09A02002, CCNU11C01002)

摘　　要：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.A tetranuclear Li 2 Cr 2 acetylide precursor complex, [Li(Tp)CrⅢ (C≡CSiMe 3 ) 2 (μ3 -pz)] 2 ·(n-pentane) 2 (Tp = hydridotris(pyrazolyl)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 μ3 -pyrazolates. The magnetic data exhibit the existence of weak antiferromagnetic interaction in the cluster.

关 键 词：acetylide complex SYNTHESIS X-ray structure magnetic properties 

分 类 号：O626[理学—有机化学]