摘要
应用6-(氢-5-四氮唑基)-2,2′-联吡啶(tbpy H)和6-(氢-5-四氮唑基)-4,4′-二甲基-2,2′-联吡啶(tmbpyH)配体,合成得到2个新的单核钆(Ⅲ)配合物[Gd(tbpy)_2(DMF)(H_2O)_2]NO_3·2H_2O(1)和[Gd(tmbpy)_2(DMF)(NO_3)]·DMF·THF(2)。X射线单晶衍射表明,每个钆(Ⅲ)离子均表现为1个畸变的三冠三角棱柱体,包含了2个四氮唑基N-H去质子化而产生的一价阴离子三齿螯合配体。此外,在2,2′-联吡啶环上引入2个甲基对钆(Ⅲ)金属中心的配位环境有显著影响,表现为2个单齿配位的水分子被1个螯合配位的硝酸根离子取代。
Two new mononuclear Gd (Ⅲ)complexes,[Gd (tbpy)2 (DMF) (H2O)2]NO3·2H2O (1)and[Gd (tmbpy)2 (DMF) (NO3)]·DMF·THF (2), have been synthesized by using 6-(1H-tetrazole-5-yl)-2,2'-bipyridyle (tbpyH)and 6-(1H-tetrazole-5-yl)-4,4'-dimethyl-2,2'-bipyridyle (tmbpyH). As revealed by single-crystal X-ray diffraction, each Gd (Ⅲ)ion has a distorted tricapped trigonal prism with two mono-anionic tridentate chelating ligands, originating from N-H deprotonation of the tetrazolyl ring, and the introduction of two methyl groups into the 2,2'-bypridyl ring has a significant effect on the coordination environment of the Gd (Ⅲ)core, showing that two mono-coordinated H2O molecules are displaced by one chelating nitrate. CCDC:1496645, 1; 1496646, 2.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2017年第2期323-328,共6页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金(No.21561013,21501077)
江西省青年科学基金重大项目(No.20143ACB21017,20161ACB21013)
江西省自然科学基金(No.20142BAB203001,20151BAB213003)
江西理工大学清江青年英才支持计划资助~~