Zhou Ai
2012
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Journal
Journal of Guangzhou University
Abstract
Reactions of N,N,N′,N′-tetrakis(2-hydroxyethyl)ethylenediamine(H4edte) with Fe(ClO4)3·9H2O or FeCl3·6H2O in MeCN or MeCN/MeOH(v/v: 6∶ 1) with different bases yield one binuclear iron clusters and one 3D complex with 4,4-net: [Fe2(H2edte)2](ClO4)2(1)(H4edte = N,N,N′,N′-tetrakis(2-hydroxyethyl)ethylenediamine) and(NMe4)2[FeNa(N3)6](2) X-ray diffraction crystal structure analysis shows that complex 1 crystallizes in monoclinic system,space group P21/c with a=0.074 401(9)nm,b=1.205 39(14)nm,c=1.757 5(2)nm,α =γ= 90°,β=97.562(2)°,V=1.562 7(3) nm3,Z=2.Complex 2 crystallizes in cubic system,space group P2(1)3 with a=b=c= 1.275 09(6)nm,α=β=γ=90°,V=2.073 11(17) nm3,Z=12.In the formation of the complex 1,the hexadentate H2edte2-ligand acts in a similar μ2 coordination mode to bridge two metal ions and two hydroxyl groups in H2edte2-ligand have not been dehydrogenized.Besides,one hydroxyl group in the ligand keeps non-coordination.In Complex 2,hexadentate H4edte ligand only adjusts the pH of the solution.However,N-3 ions adopt μ1,3 coordination mode and NMe+4 ions act as template in the framework by weak hydrogen bond.