Coordination driven self-assembly of metallamacrocycles using ambidentate linkers and self-selection of single linkage isomer

Bar, Arun Kumar and Chakrabarty, Rajesh and Lee, Hon Man and Mukherjee, Partha Sarathi (2011) Coordination driven self-assembly of metallamacrocycles using ambidentate linkers and self-selection of single linkage isomer. In: Inorganica Chimica Acta, 372 (1, Sp.). pp. 313-320.

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Abstract

Nicotinate-N-oxide and isonicotinate-N-oxide have been employed to synthesize four heterometallic metallamacrocycles (dppf)(2)Pd-2(nicotinate-N-oxide)(2)](OTf)(2) (1), (dppf)(2)Pt-2(nicotinate-N-oxide)(2)](OTf)(2) (2), (dppf) 2Pd2(isonicotinate-N-oxide)(2)](OTf)(2) (3) and (dppf)(2)Pt-2(isonicotinate-N-oxide)(2)](OTf)(2) (4). The complexes represent the first examples of metallamacrocycles driven by solely Pd(II)/Pt(II)-O coordination using carboxylate-N-oxide donor. All the complexes 1-4 are characterized by IR, UV-Vis, multinuclear NMR spectroscopic and ESI-MS studies. The molecular structures of the complexes 1 and 3 are unambiguously determined by single crystal X-ray diffraction analysis. Despite the possibility of formation of several linkage isomers due to ambidentate nature of the donors, exclusive formation of 2 + 2] self-assembled single isomeric metallamacrocycle in each case is interesting observation. (C) 2011 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Additional Information:	Copyright of this article belongs to Elsevier Science.
Keywords:	Self-assembly;Macrocycle;X-ray;Linkage isomer;Pt(II) and Pd(II);Coordination bonding
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	15 Jun 2011 05:50
Last Modified:	15 Jun 2011 05:50
URI:	http://eprints.iisc.ernet.in/id/eprint/38252

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