二苯甲酰甲烷和N，N-二甲基丙二胺混配体的锌和镉配合物的合成、晶体结构和热性质研究

合成了二苯甲酰甲烷与N,N-二甲基丙二胺混配配合物Zn(dmapa)(dbm)₂(1) 和Cd(dmapa)(dbm)₂(2)。用元素分析、红外光谱对配合物进行了表征,并用X-射线单晶衍射测定了配合物的晶体结构。配合物1属单斜晶系,P2₁/n空间群;配合物2属三斜晶系,P1 空间群。中心金属离子(Zn、Cd)与来自2个dbm^-配体的4个O原子和来自dmapa配体的2个N原子配位,形成变型的八面体构型。研究了2个配合物的热稳定性。     

Syntheses,Crystal Structures and Thermal Properties of Two Dicadmiun(II) Complexes Cd_2L_2X_2(HL=N-(3-Methoxylsalicylidene)-3-dimethylaminopropylamine,X = Cl(1),NCS(2))

Two Cd(II) complexes, Cd2L2Cl2(1) and Cd2L2(NCS)2(2)(HL = N-(3-methoxyl-salicylidene)-3-dimethylaminopropylamine) were synthesized and determined by EA, IR, TG and single-crystal X-ray diffraction.The crystallographic data are as follows:monoclinic, space group P21/n, a = 9.2710(9), b = 18.0069(18), c = 18.5562(19) , β = 99.741(4)o, V = 3053.1(5), Z = 4, μ = 1.605, F(000) = 1536, R = 0.0264 and wR = 0.0699 for 1;orthorhombic, space group Pca21, a = 16.196(3), b = 11.506(2), c = 36.126(7), V = 6732(2), Z = 8, μ = 1.428, F(000) = 3264, R = 0.0376 and wR = 0.0877 for 2.There are two geometrically different octahedral Cd(II) atoms, with N4O2 and O4Cl2 donor sets for 1 while N4O2 and N2O4 for 2.In the dinuclear Cd(II) centers, the Cd(II) atoms are held together by two deprotonted phenolate oxygen atoms from tetradentate L-ligands.The thermal gravity data show two step decompositions with the residues of CdO for two complexes.