Issue 32, 2009

Rationally designed chiral Ni5L6clusters with the in situ generated tridentate ligand. Hydrothermal synthesis, crystal structures, morphology and magnetic properties

Abstract

A series of rationally designed pentanuclear clusters with D3 symmetry have been synthesized and structurally characterized. The complexes were of formula [Ni5L6]XnY4−n·mH2O [2–431, X = NO3, Y = OH, n = 1, m = 3 (5); X = Br, n = 4, m= 4 (6); X = I, n = 4, m= 0 (7)], where the ligand [L, (Z)-1,2-di(1H-benzoimidazol-2-yl)ethenol] was produced in situ under hydrothermal conditions. SEM images proved that the crystals of compounds 24, 6 and 7 were hollow tetragonal or hexagonal prisms, and a nucleation–dissolution–recrystallization mechanism was investigated. Complexes 3 and 4 demonstrated chirality from CD spectra. Magnetic susceptibility measurements of 47 showed the occurrence of antiferromagnetic interactions, and the all negative J values fitted of the variable-temperature magnetic susceptibility data applying the spin matrix method confirmed the overall antiferromagnetic exchange in the clusters.

Graphical abstract: Rationally designed chiral Ni5L6clusters with the in situ generated tridentate ligand. Hydrothermal synthesis, crystal structures, morphology and magnetic properties

Supplementary files

Article information

Article type
Paper
Submitted
14 Jan 2009
Accepted
02 Jun 2009
First published
29 Jun 2009

Dalton Trans., 2009, 6385-6395

Rationally designed chiral Ni5L6clusters with the in situ generated tridentate ligand. Hydrothermal synthesis, crystal structures, morphology and magnetic properties

S. Feng, M. Zhu, L. Lu, L. Du, Y. Zhang and T. Wang, Dalton Trans., 2009, 6385 DOI: 10.1039/B900709A

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