一个一维链配合物[Ni(tacn)(μ_(1.3)-N_3)(N_3)]的合成,结构,光谱和磁性表征(tacn=1,4,7-三氮杂环壬烷)(英文)  

Synthesis, Crystal Structure and Magnetic Properties of a One-dimensional Complex: [Ni(TACN)(μ_(1.3)-N_3)(N_3)]_n (TACN = 1,4,7-triazacyclononane)

作　　者：王召东[1] 高凤仙[1] 韩伟[1] 谢承志[1] 阎世平[1,2] 

机构地区：[1]南开大学化学系 [2]北京大学稀土材料化学及应用国家重点实验室,北京100871

出　　处：《南开大学学报（自然科学版）》2005年第2期80-87,共8页Acta Scientiarum Naturalium Universitatis Nankaiensis

基　　金：Supported by the NNSF of China(NO.20071028)the NSF of Tianjin(No.013605811).

摘　　要：合成了一个一维链镍(Ⅱ)配合物,并通过X-射线衍射测得其晶体结构.晶体属正交晶系,空间群为Pca2(1),晶胞参数a=0.7755(3)nm,b=1.5411(5)nm,c=1.8654(6)nm,Z=4,R1=0.0305,wR2=0.0751.中心镍(Ⅱ)离子与1,4,7-三氮杂环壬烷的三个氮原子和三个叠氮的氮原子配位,形成一维链结构.该配合物的磁性测定表明相邻镍(Ⅱ)离子间存在弱的反铁磁相互作用,磁性拟合的结果J=-1.02cm-1,g=2.26,与实验结果相一致.The preparation and X-ray crystal structure of [Ni (tacn) (μ1.3-N3) (N3)]n (tacn = 1, 4. 7-triazacyclononane ) have been presented. The complex crystallizes in the orthorhombic. Space group Pca2(1), a = 0. 775 5(3) nm, b=1.541 1(5) nm, c=1.865 4(6) nm, Z = 4, R1 = 0. 030 5 and ωR2 = 0. 075 1. The central Ni ( Ⅱ ) ions are octahedrally coordinated to three nitrogen atoms from tacn and three nitrogen atoms from N3, forming a 1-D chain structure. The magnetic properties of the complex show that there are weak antiferromagnetic interactions between Ni(Ⅱ ) centers. The calculated μeff-T curve with J= -1.02 cm-1, g = 2. 26 show good agreement with experimental data.

关 键 词：叠氮离子 1 4 7-三氮杂环壬烷 磁性 

分 类 号：O614.81[理学—无机化学]