论文部分内容阅读
本文报道了二(2-氨乙基)-1,3-丙二胺[缩写为(2,3,2)]与镍的两个新配合物:[(2,3,2)Ni(ImH)2](ClO4)2和[(2,3,2)2Ni2(Im)](ClO4)3的合成和晶体结构(其中ImH是咪唑)。配合物[(2,3,2)Ni(ImH2)](ClO4)2属于正交晶系,空间群Pna21,晶胞参数为:a=16.798(3),b=15.724(3),c=8.891(2),Z=2。R1=0.0566,wR2=0.0659。在配合物正离子中,Ni与(2,3,2)的四个配位N原子和两个咪唑的两个配位N原子构成NiN6的八面体配位构型,(2,3,2)采取顺式构象。配合物[(2,3,2)2Ni2(Im)](ClO4)3属于单斜晶系,空间群C2,晶胞参数为:a=12.044(1),b=12.224(2),c=11.868(1);β=108.04°;Z=2,R1=0.0384,wR2=0.0516。在配合物正离子中,咪唑桥联两个等价的(2,3,2)Ni,每个镍原子都有四方锥的配位环境,(2,3,2)的四个配位N原子构成赤道平面,咪唑N原子占据轴向位置,分子内两个金属间的距离为6.190(3)
In this paper, two novel complexes of bis (2-aminoethyl) -1,3-propanediamine [abbreviated as (2,3,2)] with nickel are reported: ) 2] (ClO4) 2 and [(2,3,2) 2Ni2 (Im)] (ClO4) 3 where ImH is imidazole. The complex [(2,3,2) Ni (ImH2)] (ClO4) 2 belongs to the orthorhombic space group Pna21 with unit cell parameters of a = 16.798 (3) and b = 15.724 ), C = 8.891 (2) , Z = 2. R1 = 0.0566, wR2 = 0.0659. In the complex positive ions, Ni and two coordination N atoms of (2,3,2) and two coordination N atoms of two imidazoles form the octahedral coordination structure of NiN6, (2,3,2 Take the cis conformation. The complex [(2,3,2) 2Ni2 (Im)] (ClO4) 3 belongs to the monoclinic system with space group C2. The unit cell parameters are a = 12.044 (1), b = 12.224 ), C = 11.868 (1) ; β = 108.04 °; Z = 2, R1 = 0.0384, wR2 = 0.0516. In complex cations, imidazole bridges two equivalent (2,3,2) Ni, each nickel atom has a tetragonal pyramid coordination environment, (2,3,2) four coordination N Atoms constitute the equatorial plane, the imidazole N atoms occupy the axial position, the distance between the two metals in the molecule is 6.190 (3)