摘要
本文报道了1个基于3,8-二噻吩-1,10-菲哕啉(dtphen)的双核锰(Ⅱ)配合物1[trans—Mn2Cl4(dtphen)2]和2个基于3,8-二甲基噻吩-1,10.菲哕啉(dmtphen)的单核锰(Ⅱ)和单核钴(Ⅱ)配合物2和3(分子式分别为[cis-MnCl:(dmtphen)2]和[cis-CoCl2(dmtphen)2])的合成、波谱和晶体结构表征。其中。2个锰(Ⅱ)配合物的分子结构呈现不同的配位模式,由于噻吩环上甲基引入所产生的位阻效应.导致单核配合物2和3中,两配体中的噻吩环相对于1,10-菲哆啉环呈现相同的反式/反式分子构型,其二面角分布在14.1(1)°51.5(1)°。而对于双核配合物1,由于没有甲基位阻的影响,其相应芳环之间二面角减少至2.0(1)°~20.2(1)°,且配体呈现顺式/反式分子构型。
A dinuclear 3,8-dithiophen substituted 1,10-phenanthroline (dtphen) manganese(Ⅱ) complex and a pair of 3,8-di-3-methyhhiophen substituted 1,10-phenanthroline (dmtphen) manganese(n) and cobalt(n) complexes, formulated as [trans-Mn2C14(dtphen)2] (1), [cis-MnC12(dmtphen)2] (2) and [cis-CoC12(dmtphen)2] (3), were synthesized and characterized by elemental analysis, FTIR, UV-Vis spectra and X-ray single-crystal structural analysis. The two Mn(Ⅱ) complexes exhibit diverse coordination models in the whole molecular structures. In mononuelear complexe 2 and 3, both dmtphen ligands have similar trans/trans conformation but different dihedral angles ranging from 14.1(1)°~51.5(1)° because of the spatial crowding effects of methyl group. In contrast, the dihedral angles of dtphen ligands in dinuclear complex 1 are only within 2.0(1)°~20.2(1)° and the two side thiophene rings in the dtphen ligand adopt the cis/trans conformation relative to the central phen unit. CCDC: 870021, 1; 870022, 2; 870023, 3
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2012年第12期2540-2547,共8页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金(No.21165013,21171088)
中国博士后基金(No.2012M511720)
江西省自然科学基金(No.2010GZH0112)
南昌航空大学博士基金(No.EA201102327)资助项目
关键词
锰(Ⅱ)配合物
钴(Ⅱ)配合物
取代基效应
顺反异构
晶体结构
manganese(Ⅱ) complexe
cobalt(Ⅱ) complexe
substituent effects
cis and trans configuration
crystal structure