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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/3442
Title: Unprecedented oxidation of aldimine to carboxamido function during reactivity studies on ruthenium complex with acidified nitrite solution: Synthesis of ruthenium nitrosyl complex having {RuNO}6 moiety and photorelease of coordinated NO
Authors: Kumar R.
Kumar S.
Bala M.
Ratnam A.
Singh U.P.
Ghosh, Kaushik
Published in: Journal of Organometallic Chemistry
Abstract: Ruthenium(II) complex namely [Ru(L1)(PPh3)Cl2] (1) [where L1 = N-(pyridin-2-ylmethylene)quinolin-8-amine] derived from the tridentate ligand containing two pyridine and one imine donors was synthesized. This ruthenium(II) complex was treated with acidified nitrite solution to afford a ruthenium nitrosyl complex [Ru(L2)(PPh3)(NO)Cl](ClO4) (2) [where L2 = N-(quinolin-8-yl)picolinamide]. These complexes were characterized by elemental analysis, electronic absorption, NMR (1H and 31P NMR) and IR spectral studies. The molecular structure of 2 was confirmed by X-ray crystallography and the redox property of metal centers was investigated. During nitrosylation of complex 1, we found out the oxidation of imine functional group to amide functional group in the nitrosyl complex (2). Here, we also examined probable mechanism of nitric oxide (NO) mediated oxidation of imine to carboxamido group. The resultant nitrosyl complex 2 was found to be photoactive and could deliver NO on demand upon illumination of light. © 2018 Elsevier B.V.
Citation: Journal of Organometallic Chemistry (2018), 863(): 77-83
URI: https://doi.org/10.1016/j.jorganchem.2018.02.010
http://repository.iitr.ac.in/handle/123456789/3442
Issue Date: 2018
Publisher: Elsevier B.V.
Keywords: Mechanism
Myoglobin trapping
Photolability
Redox chemistry
Ruthenium nitrosyl complex
Ruthenium(II) complex
ISSN: 0022328X
Author Scopus IDs: 57208685185
7405769266
56844899900
56380287900
57203181883
57204513823
Author Affiliations: Kumar, R., Department of Chemistry, Indian Institute of Technology, Roorkee, Roorkee, Uttarakhand 247667, India
Kumar, S., Department of Chemistry, Indian Institute of Technology, Roorkee, Roorkee, Uttarakhand 247667, India
Bala, M., Department of Chemistry, Indian Institute of Technology, Roorkee, Roorkee, Uttarakhand 247667, India
Ratnam, A., Department of Chemistry, Indian Institute of Technology, Roorkee, Roorkee, Uttarakhand 247667, India
Singh, U.P., Department of Chemistry, Indian Institute of Technology, Roorkee, Roorkee, Uttarakhand 247667, India
Ghosh, K., Department of Chemistry, Indian Institute of Technology, Roorkee, Roorkee, Uttarakhand 247667, India
Funding Details: KG is thankful to CSIR, New Delhi ( 01(2720)/13/EMR–II dated 17–04–2013) for financial assistance. SK, MB are also thankful to CSIR, New Delhi for their fellowship and RK, AR are thankful to MHRD for their fellowship.. Appendix A
Corresponding Author: Ghosh, K.; Department of Chemistry, Indian Institute of Technology, RoorkeeIndia; email: ghoshfcy@iitr.ernet.in
Appears in Collections:Journal Publications [CY]

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