Reactivity of nitrilotriacetic acid with polypyridyl protected as well as naked copper(II) nitrate

Kumari, Niraj, Ward, Benjamin David ORCID: https://orcid.org/0000-0003-1406-5940, Kar, Sanjib and Mishra, Lallan 2012. Reactivity of nitrilotriacetic acid with polypyridyl protected as well as naked copper(II) nitrate. Polyhedron 33 (1) , pp. 425-434. 10.1016/j.poly.2011.12.009

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Abstract

Six complexes of types [Cu(NTA)Na(H2O)](n) 1, (Cu(H(2)NTA)(2)]H2O 2, [Cu-3(C2O4)(2)(bpy)(3)(H2O)(2)](NO3)(2) 3, [Cu6Na4(NTA)(2)(mu-O)(2)(bpy)(6)(H2O)(4)(NO3)(2)]center dot 3H(2)O 4, [Cu-2(C2O4)(phen)(2)(NO3)(2)] 5, and [Cu(phen)(2)(Cl)] (NO3)(2)(H2O) 6 (bpy = 2,2'-bipyridyl, phen = 1,10-phenanthroline, H(3)NTA = nitrilotriacetic acid and C2O42- = oxalate) were synthesized and characterized using elemental analysis, spectroscopic (IR, UV-Vis and ESR), single crystal X-ray diffraction, cyclic voltammetry and differential pulse voltammetric techniques. The crystal packing of complexes 1, 2 and 3 using secondary interactions provided star like, cross linked single stranded helical and 1D zig-zag structures, respectively. Complex 4 comprised of six Cu(II) centers and four Na centers. Its assembly using secondary interactions along c axis displayed a wavy chain structure where as 5 assembled along b axis in a ladder-structure. The complex 6 is a mononuclear Cu(II) complex bearing two 1,10-phenanthroline groups, showed pi-pi interactions between their aromatic rings. DFT calculations suggested that copper activates the H(3)NTA towards formation of coordinated oxalate groups in complexes 3 and 5. (C) 2011 Elsevier Ltd. All rights reserved.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Advanced Research Computing @ Cardiff (ARCCA) Chemistry
Subjects:	Q Science > QD Chemistry
Uncontrolled Keywords:	Nitrilotriacetic acid; Polynuclear Cu(II) complexes; Copper–sodium complexes; X-ray diffraction; DFT calculation
Publisher:	Elsevier
ISSN:	0277-5387
Last Modified:	20 Oct 2022 07:46
URI:	https://orca.cardiff.ac.uk/id/eprint/26356

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