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作 者:吴琼洁[1] 蔡碧琼[1] 蒋疆[1] 谢勇平[1] 吴丹[1]
出 处:《华中师范大学学报(自然科学版)》2011年第2期232-235,共4页Journal of Central China Normal University:Natural Sciences
基 金:福建农林大学校青年教师基金资助项目(08B10)
摘 要:合成了含N,N’-双亚水杨基肼(H_2 salhn)的双核铁配合物[Fe_2(salhn)_3]·2DMF·1.5H_2O,通过X射线单品衍射进行了表征.晶体属单斜晶系,空间群为P2_1/n,a=1.434 2(3)nm,b=1.927 2(4)nm,c=1.7261(4)nm,β=94.94(3),V=4.753(2)nm^3,Z=4,Mr=999.64g·moL^(-1),Dc=1.397g·cm^(-3),μ=0.675mm^(-1),F(000)=2076,R_1=0.0534,wR_2=0.1130.标题配合物是由双核铁配合物分子内界[Fe_2(salhn)_3]、两个游离的DMF分子和H_2O分子组成.[Fe_2(salhn)_3]中每一个铁离子分别与三个四齿配体salhn的三个酚氧原子和三个肼基氮原子配位,形成了Fe(ONON)(O)(N)的变形八面体配位构型,三个配体分别桥联两个金属原子形成特定的三螺旋构型.在标题配合物中,四齿桥联配体N,N’-双亚水杨基肼以负二价阴离子形式存在.The title dinuclear iron(liD complex [Fe2 (salhn)3] ·2DMF · 1.5H2O with N, N'-bis(salicyl idene)hydrazine (H2 salhn) has been prepared and characterized by X-ray single crystal diffraction. The crystallcgraphic data were as follows: monoclinic system, space groupP21/n, a = 1.4342(3) nm, b=1.9272(4) nm, c = 1. 7261(4)nm, 13 = 94. 94(3), V= 4.753(2) nm3, Z= 4, Mr: 999.64g. moL ^-1, Dc= 1.397 g. cm^-3, μ = 0.675 mm 1, F(000) = 20;76, RI= 0.0534 and wR2= 0. 1130. The title complex contains one [Fe2 (salhn)3 ] molecule, two DMF and H2 O molecules. Each Fe(III) center is coordinated by six donors (three oxygen atoms and three nitrogen atoms) from three quardentate ligands(salhn), forming a distorted octahedral coordination geometry. The three ligand molecules wrap in a helical arrangement around the two metal ions. N, N '-bis(salicyl idene)hydrazine acts as a dianionic tetradentate ligand in the title complex.
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