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Small platinum-thallium clusters stabilized by ethylenediamine, (NC)(5)Pt-Tl(en)(n-1) (n=1-3) - Characterization in solution and in the solid state
KTH, Superseded Departments, Chemistry.
2001 (English)In: European Journal of Inorganic Chemistry, ISSN 1434-1948, E-ISSN 1099-0682, no 5, 1311-1319 p.Article in journal (Refereed) Published
Abstract [en]

Three neutral binuclear platinum-thallium compounds containing a direct and naked (unsupported by ligands) metal-metal bond have been prepared in dimethyl sulfoxide (DMSO). The compounds have the formula [(NC)(5)Pt-Tl(en)(n-1)] (n = 1-3, for compounds 1, 2 and 3, respectively) and were found to exist in solution by means of multinuclear NMR (Pt-195, Tl-205, C-13 and H-1) and Raman spectroscopy. The compounds exhibit very large single bond Pt-195-Tl-205 spin-spin coupling constants of 48-66 kHz. In addition, the solid state analogues of 1 and 3, [(NC)(5)Pt-Tl(DMSO)(4)](DMSO) and [(NC)(5)Pt-Tl(en)(2)]-(DMSO)(2), were synthesized and their structures determined by single crystal X-ray diffraction. The metal-metal bond lengths of Pt-Tl are 2.6131(4) Angstrom and 2.6348(5) Angstrom in compounds I and 3, respectively. Crystal data for compound 1: monoclinic, space group Cc (No. 9), Z = 4, a = 17.2367(14), b = 9.5560(11), c = 17.7941(15) Angstrom, beta = 100.551(10)9 V = 2881.4(5) Angstrom (3), T = 110(1) K; and for compound 3: monoclinic, space group P2(1) (No. 4), Z = 2, a 9.3167(14), b 12.3007(13), c = 11.4586(16) Angstrom, beta = 112.318(16)degrees, V =1214.8(3) Angstrom (3), T = 110(1) K.

Place, publisher, year, edition, pages
2001. no 5, 1311-1319 p.
Keyword [en]
metal-metal interactions, platinum, thallium, N ligands, NMR spectroscopy, nuclear magnetic-resonance, metal-metal bond, aqueous-solution, structural characterization, multinuclear nmr, chemical-shift, complexes, equilibria, mercury(0), compound
URN: urn:nbn:se:kth:diva-20573ISI: 000168399800027OAI: diva2:339269
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

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