Abstract
A series of palladium (II) and platinum (II) selenolate complexes have been isolated depending upon the nature of the phosphine ligand. The substitution reaction of [PdCl2(PPh3)2] with two equivalents of NaSeC5H3(5-Me)N resulted in the hexanuclear complex [Pd6Br0.87Cl1.13{2-SeC5H3(5-Me)N2}2(PPh3)6] (1a) whereas a chelated compound [Pt{κ-Se, κ-N: SeC5H3(5-Me)N}{SeC5H3(5-Me)N}(PPh3)] (1b) has been obtained in the case of [PtCl2(PPh3)2]. However, chelated phosphine as an ancillary ligand with a similar reaction by using [PtCl2(P∩P)] (P∩P = dppm, dppe) yielded cis-configured monomer [Pt{2-SeC5H3(5-Me)N}2(P∩P)]. The trinuclear complexes [M3(µ-Se)3(dppp)3]2+ [M = Pd (2d), Pt (2e)] were isolated by reactions of [MCl2(dppp)] (M = Pd, Pt) with NaSeC5H3(5-Me)N via facile cleavage of Se-C bond in presence of chlorinated solvents. All the synthesized complexes have been characterized by elemental analyses, 1H, 31P{1H}, 77Se{1H} NMR spectroscopy. The molecular structure of complexes [Pd6Br0.87Cl1.13{2-SeC5H3(5-Me)}2(PPh3)6] (1a) and [Pt{2-SeC5H3(5-Me)N}2(dppm)].C6H5CH3 (2a) were determined by single crystal X-ray diffraction analyses.
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Acknowledgements
One of the authors Dr. Afsar Ali Siddiki is thankful to DST-SERB for providing grant (TARE/2022/000220) to carry out this work. Authors are also thankful to Mr. Kamlesh Sathpute from IIT Ropar for carrying out the single crystal XRD.
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One of the authors Afsar Ali Siddiki is thankful to DST-SERB for providing grant (TARE/2022/000220) to carry out this work.
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Saili Vikram Lokhande: Investigation, methodology, data curation, writing main manuscript; Atharva Yeshwant Kulkarni: Data curation; Afsar Ali Siddiki: Data curation; Raymond J. Butcher: Data curation, writing-review and editing, Rohit Singh Chauhan: Conceptualization, supervision, writing-review and editing.
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Appendix A. Supplementary Data
Appendix A. Supplementary Data
CCDC 2326944, 2294251 for complexes [Pd6Br0.87Cl1.13{2-SeC5H3(5-Me)N2}2(PPh3)6] and [Pt{2-SeC5H3(5-Me)N}2(dppm)] respectively contains the supplementary crystallographic data for this paper. These data can be obtained free of charge via http://www.ccdc.cam.ac.uk/data_request/cif, from the Cambridge Crystallographic Data Centre, 12 Union Road, Cambridge CB2 1EZ, UK; fax: (+ 44) 1223-336-033; or e-mail: deposit@ccdc.cam.ac.uk.
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Lokhande, S.V., Kulkarni, A.Y., Siddiki, A.A. et al. Reactivity of 5-Methylpyridyl-2-Selenolate With Platinoid Metal Precursors: Isolation of Tri and Hexanuclear Complexes via Se-Se and Se-C Bond Cleavage. J Clust Sci (2024). https://doi.org/10.1007/s10876-024-02606-z
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DOI: https://doi.org/10.1007/s10876-024-02606-z