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1D Manganese(III) and iron(III) coordination polymers containing Schiff-base ligands and dicyanamide

IR@NISCAIR: CSIR-NISCAIR, New Delhi - ONLINE PERIODICALS REPOSITORY (NOPR)


Field	Value

Creator	Price, David J Batten, Stuart R Moubaraki, Boujemaa Murray, Keith S

Date	2013-08-21T06:54:38Z 2013-08-21T06:54:38Z 2003-09

Identifier	0975-0975(Online); 0376-4710(Print) http://hdl.handle.net/123456789/20733

Description	2256-2266 The 1D coordination polymers, [MIII(Schiff-base)(dca)]<i><sub>n</sub></i>, dca<sup>-</sup> = dicyanamide, N(CN)<sub>2</sub><sup>-</sup>, M<sup>III</sup> = Mn and Fe, Schiff-base=salen<sup>2-</sup> (N,N'-ethylenebis(salicylaldiminato)) (<b>1</b>) and (<b>2</b>); sal-<i>o</i>-phen<sup>2- </sup>(N,N'-<i>o</i>-phenylenebis (salicylaldiminato)) (<b>3</b>) and (<b>4</b>); (±)-saltch<sup>2-</sup> (N,N'-(±)-<i>trans</i>-cyclohexanebis (salicylaldiminato)) (<b>5</b>) and (<b>6</b>), are reported. The complexes consist of octahedral high-spin M<sup>III</sup> atoms coordinated in the equatorial plane by the tetra-chelating Schiff-base ligand and coordinated in the axial positions by single μ<sub>1,5</sub>-dicyanamide bridges, forming infinite linear zigzag chains. The chains of complexes <b>1</b> to <b>6</b> interdigitate in a parallel fashion with adjacent chains, via weak π-stacking. Variable temperature magnetic susceptibility measurements (2-300 K; <i>H </i>=1T) have shown that these compounds display very weak anti ferromagnetic coupling, and consequently no long-range magnetic order has been observed under these conditions, as expected for isolated 1D chains.

Language	en_US

Publisher	NISCAIR-CSIR, India

Rights	<img src='http://nopr.niscair.res.in/image/cc-license-sml.png'> <a href='http://creativecommons.org/licenses/by-nc-nd/2.5/in' target='_blank'>CC Attribution-Noncommercial-No Derivative Works 2.5 India</a>

Source	IJC-A Vol.42A(09) [September 2003]

Title	1D Manganese(III) and iron(III) coordination polymers containing Schiff-base ligands and dicyanamide

Type	Article