新型的含硫族元素碳硼烷配体的三(3,5-二甲基-1-吡唑)硼氢钼配合物的合成和分子结构(英文)  

Synthesis and Molecular Structures of Novel Hydrotris (3,5-dimethyl-1-pyrazolyl)borate Molybdenum Complexes Containing 1,2-Dicarba-closo-dodecaborane-1,2-dichalcogenolato Ligands

作　　者：李玮[1] 金国新[1] 

机构地区：[1]复旦大学化学系上海市分子催化和功能材料重点实验室,上海200433

出　　处：《无机化学学报》2005年第6期846-851,F007,共7页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学杰出青年基金项目(No.29925101,20274008);教育部博士点基金项目资助。

摘　　要：三齿单核三(3,5-二甲基-1-吡唑)硼氢钼配合物Tp*Mo(O)Cl2(1)(Tp*=三(3,5-二甲基-1-吡唑)硼氢HB(C3H(Me2)N2)3)与含硫族元素碳硼烷的锂盐[(THF)3LiE2C2B10H10(THF)]2[E=S(2a),Se(2b),Te(2c)]反应得到了单核配合物Tp*Mo(O)E2C2B10H10[E=S(3a),Se(3b),Te(3c)],产率较好。配合物3a^3c通过红外光谱和元素分析表征,解析了3b的X-射线单晶结构。在空气中,配合物3a可以生成一新颖的含氧桥的双核钼的配合物[HMe2Pz][Tp*Mo(O)(μ2-O)2Mo(O)S2C2B10H10]4a。解析了4a的X鄄射线单晶结构。Mo-Mo间键长为0.25483(12)nm,为单键相互作用。Reactions of tridentate mononuclear hydrotris (3,5-dimethyl-1-pyrazolyl) borate molybdenum(V) complex Tp*Mo(O)Cl-2 (1) (Tp*=hydrido-tris 3,5-dimethyl-1-pyrazolyl-borate, HB(C3H(Me-2)N-2)(3)) with dilithium dichalcogenolate carboranes [(THF)(3)LiE2C2B10H10(THF)](2) [E=S(2a), Se(2b), Te(2c)] afforded mononuclear complexes Tp*Mo(O) E2C2B10H10 [E=S(3a), Se(3b), Te(3c)] in moderate yields. Complexes 3a similar to 3c have been characterized by IR and elemental analysis. The molecular structure of 3b was determined by X-ray crystallographic analysis. In the air 3a can convert into a novel binuclear oxo molybdenum complex [HMe(2)Pz][Tp*Mo(O)(mu(2)-O)(2)Mo(O)S2C2B10H10] 4a. The molecular geometry of 4a has been determined by a single crystal X-ray structure analysis. According to the short Mo-Mo distance (0.25483(12) nm), direct metal-metal interaction exists. CCDC: 263618, 3b; 263619, 4a.

关 键 词：三(3 5-二甲基-1-吡唑)硼氢 钼配合物 碳硼烷 硫族元素 晶体结构 合成 

分 类 号：O614.612[理学—无机化学] O641.4[理学—化学]