Issue 22, 2016

Anion-controlled assembly of a series of heterometallic 3d–4f compounds with 0D cluster, 1D chain, 2D network and 3D frameworks

Abstract

A series of heterometallic 3d–4f compounds, formulated as [Ln2Ni2(dcta)2(H2O)8(NO3)2]·8H2O (Ln = Nd (1); Ln = Dy (2)); {[DyNi(dcta)(H2O)6]·Cl·(H2O)2}n (3); {[LnNi(dcta)(H2O)6]·(ClO4)·(H2O)3}n (Ln = La (4); Ln = Nd (5)); {[Gd12Ni12(dcta)12(H2O)24]·[Ni(H2O)6]3·(ClO4)18·(H2O)80}n (6) and {[La12Ni12(dcta)12(H2O)60]·[Ni(H2O)6]3·(ClO4)18·(H2O)30}n (7), (H4dcta = trans-1,2-diaminocyclohexane-N,N,N′,N′-tetraacetic acid), have been obtained through a metalloligand strategy. Structural analysis reveals that [Ni(dcta)]2− acts as a bidentate metalloligand in 1–3, tridentate metalloligand in 4 and 5, and tetradentate metalloligand in 6 and 7. These compounds can be divided into four types according to the dimensionality of the structures. Compounds 1 and 2 are 0D tetranuclear clusters comprised of symmetric [LnNi(dcta)]2 12-membered rings, compound 3 is a 1D chain which is reinforced by hydrogen bonds. Compounds 4 and 5 possess an infinite 2D layer structure with a 63-hcb topology, and compounds 6 and 7 are two 3D frameworks constructed by face-sharing Keplerate-type metal–organic polyhedra. It is interesting that different anions lead to different topology structures. The magnetic properties and thermal stabilities of them are also studied.

Graphical abstract: Anion-controlled assembly of a series of heterometallic 3d–4f compounds with 0D cluster, 1D chain, 2D network and 3D frameworks

Supplementary files

Article information

Article type
Paper
Submitted
21 dec 2015
Accepted
29 jan 2016
First published
01 feb 2016

CrystEngComm, 2016,18, 4142-4149

Anion-controlled assembly of a series of heterometallic 3d–4f compounds with 0D cluster, 1D chain, 2D network and 3D frameworks

H. Zhang, Z. Yan, Y. Luo, X. Zheng, X. Kong, L. Long and L. Zheng, CrystEngComm, 2016, 18, 4142 DOI: 10.1039/C5CE02503F

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