摘要
羧酸因其具有多样的配位方式、羧基氧原子易参与形成氢键以及本身能减缓抗衡离子效应的负电性而被广泛应用于配合物的合成中。目前,研究主要集中于苯甲酸及其衍生物构筑的配合物.而其中以吸电子基团取代的衍生物为配体建构的配合物多集中于卤素、硝基、氰基等。邻-(4-甲基苯甲酰基).苯甲酸中既含有羧基又含有甲酰基,是一个具有多配位点的配体.它可以作为端基配体或桥连配体与过渡金属离子进行配位.
One novel binuclear cadmium(Ⅱ) Complex [Cd2(phen)2(C15H11O3)4] ·(H2O) with o-methylbenzoyl-benzoic acid and 1,10-phenanthroline(phen) has been synthesized by means of hydrothermal way and characterized. It was characterized as crystallizing in the Triclinic space group P1^-, with a=1. 1155(2)nm, b= 1.2069(2)nm, c=1.4355(3) nm, a=99.79(3)°,β=111.27(3)°, γ=98.17(3)°, V=1.730 5(6) nm^3, Dc=1.514 g·cm^-3, Z=1, E(000)=804. Final GooF= 1.060, R1=0.024 7, wR2=0.063 2. The crystal structure shows that the cadmium ion is coordinated with four oxygen atoms from three o-methylbenzoyl-benzoie acid radical, two nitrogen atoms from one 1,10-phenanthroline molecule, forming a distorted octahedral coordination geometry. There exist two coordination types with the o- methylbenzoyl-benzoie acid, which coordination with the center cadmium ion with the bridging and chelating bidentatein types. Two o-methylbenzoyl-benzoic acid molecules and two cadmium(R) ions form a oetatomic ring structure, and the Cd(Ⅱ)...Cd(Ⅱ) distance is 0.419 8 nm. The result of TG analysis shows that the title complex was stable under 220.0 ℃. CCDC: 741934.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2010年第1期166-170,共5页
Chinese Journal of Inorganic Chemistry
基金
湖南省科技厅项目(No.2008FJ3023
2009FJ3101)
湖南省重点建设学科资助项目
关键词
镉髤配合物
水热合成
晶体结构
热稳定性分析
cadmium(Ⅱ) complex
hydrothermal synthesis
crystal structure
thermal stability analysis