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一个含呋喃环顺磁性碳硼烷衍生物的合成及其生成机理(英文)

Synthesis of A Paramagnetic Carborane Derivative Containing A Furyl Ring and Its Formation Mechanism
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摘要 半夹芯16e化合物CpCoS2C2B10H10(Cp:cyclopentadienyl)(1)与2-呋喃炔酮在物质的量比为1∶1.5时反应分离得到1个顺磁性化合物CpCoS2C2B10H9(C12H10O2)(2)。在化合物2的合成过程中,一分子1中的Cp环与另一分子1中的B(3)/B(6)位连接;同时,该Cp环与1个2-呋喃炔酮分子发生Diels-Alder反应,生成1个双环[2.2.1]-2-庚烯基结构单元。此外,呋喃炔酮分子中的末端炔基碳原子与原料1中的1个硫原子相连,从而使得产物2中的钴中心离子是个17e中心。化合物2用红外、核磁、元素分析,质谱和单晶X-射线衍射分析等方法进行了表征。晶体属三斜晶系,空间群P1,晶胞参数:a=0.966 57(11)nm,b=1.544 23(15)nm,c=1.756 50(18)nm,α=114.080 0(10)°,β=105.433(2)°,γ=98.639 0(10)°。 The reaction of the 16e half-sandwich complex CpCoS2C2B10H10 (Cp:cyclopentadienyl) (1) with 2-furylpropynone in a molar ratio of 1:1.5 affords a paramagnetic derivative CpCoS2C2B10H9(C12H10O2) (2).In the synthesis process of compound 2,a Cp ring of one 1 molecule is connected with the B (3)/B (6) cite of the carborane cage of another 1 molecule.At the same time,the Cp ring and a 2-furylpropynone molecule take part in the Diels-Alder reaction to give a bicyclo [2.2.1]hept-2-enyl unit.Additionally,the terminal alkynyl carbon atom of 2-furylpropynone is connected with a sulpher atom of the reactant 1.As a result,the cobalt of the compound 2 is a 17e center.Complex 2 has been characterized by IR,NMR,elemental analysis,mass spectrum and single-crystal X-ray diffraction analysis.It crystallizes in triclinic system with space group P1.The crystal data are:a=0.966 57(11) nm,b=1.544 23(15) nm,c=1.756 50(18) nm,α=114.080 0(10)°,β=105.433(2)°,γ=98.639 0(10)°.CCDC:967543.
出处 《无机化学学报》 SCIE CAS CSCD 北大核心 2014年第6期1469-1473,共5页 Chinese Journal of Inorganic Chemistry
基金 国家自然科学基金(No.21361022)、国家自然科学基金(No.21261020)资助项目 第54批中国博士后科学基金面上基金(2013M541640)
关键词 碳硼烷 B-H键活化 表征 cobalt carborane B-H activation characterization
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