Polymeric networks of copper(II) using succinate and aromatic N-N donor ligands: synthesis, crystal structure, magnetic behaviour and the effect of weak interactions on their crystal packing

Dalton Transactions : an International Journal of Inorganic Chemistry
Debajyoti GhoshalNirmalendu Ray Chaudhuri

Abstract

Four succinato-bridged complexes of copper(II) have been synthesized. Complex 1, [Cu(2)(mu-OH(2))(2)L(bpy)(2)(NO(3))(2)](n) and 2, [Cu(2)(mu-OH(2))(2)L(phen)(2)(NO(3))(2)](n)(bpy = 2,2[prime or minute]-bipyridine; phen = 1,10-phenanthroline and LH(2)= succinic acid) exhibit 1D coordination polymer structures where both the nitrate ions are directly linked to the copper(ii) producing synthons in a 2D sheet. A novel 2D grid-like network, ([Cu(4)L(2)(bpy)(4)(H(2)O)(2)](ClO(4))(4)(H(2)O))n3, is obtained upon changing the nitrate by perchlorate anion in complex 1, where the channels are occupied by the anions. On changing the nitrate by tetrafluoroborate anion in complex 2, a novel octanuclear complex, [Cu(8)L(4)(phen)(12)](BF(4))(8).8H(2)O 4, is isolated. The coligand bpy and phen in these complexes show face-to-face (in 1,2,3,4) or edge-to-face (in 4 )pi-pi interactions forming the multidimensional supramolecular architectures. Interestingly, the appearance of edge-to-face pi-pi interactions in complex facilitates the formation of discrete octanuclear entities. Variable-temperature (300-2 K) magnetic measurements of complexes have been done. Complexes 1 and 2 show very weak antiferromagnetic (OOC-CH(2)-CH(2)-COO) and ferromagnetic...Continue Reading

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Citations

Oct 14, 2014·Chemical Communications : Chem Comm·A LanzaPiero Macchi
Mar 30, 2005·Chemical Communications : Chem Comm·Gareth O LloydLeonard J Barbour
Apr 22, 2009·Dalton Transactions : an International Journal of Inorganic Chemistry·Aparna GangulyAshok K Ganguli
Jun 6, 2013·Dalton Transactions : an International Journal of Inorganic Chemistry·Xun FengBei Ya Su
Nov 16, 2010·Dalton Transactions : an International Journal of Inorganic Chemistry·Yue-Qing ZhengWen-Xiang Huang
Aug 30, 2012·Dalton Transactions : an International Journal of Inorganic Chemistry·Jian-Yong ZhangEn-Qing Gao

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