【摘 要】
：
Two dinuclear nickel(Ⅱ) complexes [Ni2(teta)3]]Cl4·2H2O 1 and [Ni2(teta)3](NO3)42 (teta=triethylenetetramine) were synthesized by a solvothermal method and st
【机 构】
：
Department of Chemistry and Key Laboratory of Organic Synthesis of Jiangsu Province,Department of Ch
论文部分内容阅读
Two dinuclear nickel(Ⅱ) complexes [Ni2(teta)3]]Cl4·2H2O 1 and [Ni2(teta)3](NO3)42 (teta=triethylenetetramine) were synthesized by a solvothermal method and structurally characterized.Complex 1:orthorhombic,Pbca,a=13.791(3),b=13.078(3),c=18.323(4) A,V=3304.8(12) A3,Z=4,Mr=733.98,Dc=1.475 g/cm3,μ=1.500 mm-1,F(000)=1560,R=0.0585 (I> 20(I)) and wR=0.1243.Complex 2:orthorhombic,P212121,a=7.8279(14),b=14.209(3),c=31.163(6) A,V=3466.2(11) A3,Z=4,Mr=804.19,Dc=1.541 g/cm3,μ=1.164 mm-1,F(000)=1704,R=0.0401 and wR=0.0840 for 5950 observed reflections (I > 20(I)).Two Ni2+ ions are connected by one linear bridging teta ligand,forming a dinuclear [Ni2(teta)3]4+ cation.Each Ni2+ ion in 1 and 2 takes a distorted octahedral geometry with six coordinated N atoms from two teta ligands.The effect of different anions on the arrangement of [Ni2(teta)3]4+ cations has been discussed in view of H-bonding interactions.Thermal stability of 1 and 2 was also investigated.
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