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Novel porphyrin-thallium-platinum complex with naked metal-metal bond: multinuclear NMR characterization of (tpp)Tl-Pt(CN)(5) (2-) and (thpp)Tl-Pt(CN)(5) (2-) in solution
KTH, Superseded Departments, Chemistry.
KTH, Superseded Departments, Chemistry.
KTH, Superseded Departments, Chemistry.ORCID iD: 0000-0002-4521-2870
KTH, Superseded Departments, Chemistry.
2004 (English)In: Inorganica Chimica Acta, ISSN 0020-1693, E-ISSN 1873-3255, Vol. 357, no 14, 4073-4077 p.Article in journal (Refereed) Published
Abstract [en]

The novel porphyrin-thallium-platinum complexes with naked metal-metal bond, with the composition [(tpp)Tl-Pt(CN)(5)](2-) (1) and [(thpp)Tl-Pt(CN)(5)](2-) (2) (tpp = tetraphenylporphrin and thpp = tetrakis(4-hydroxyphenyl)-porphine), were synthesized and characterised by multinuclear NMR (Tl-205, Pt-195, C-13 and H-1) and Raman spectroscopies in solution. The presence of a direct Pt-Tl metal-metal bond in the complexes is convincingly confirmed by a very strong one-bond Pt-195-Tl-205 spin-spin coupling (47.8 and 48.3 kHz for 1 and 2, respectively) detected in both Pt and Tl NMR spectra. The corresponding force constant in molecule 1, 1.92 Ncm(-1), was calculated using Raman stretching frequency of the Pt-T1 vibration and is characteristic for a single metal-metal bond.

Place, publisher, year, edition, pages
2004. Vol. 357, no 14, 4073-4077 p.
Keyword [en]
metal-metal bond, porphyrin complexes, platinum compounds, thallium compounds, solution structure, meso-tetraphenylporphyrin acetate, ray crystal-structure, molecular-structure, aqueous-solution, resonance raman, dimers, spectroscopy, state
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-23924DOI: 10.1016/j.ica.2004.06.029ISI: 000225452100003Scopus ID: 2-s2.0-8144226481OAI: oai:DiVA.org:kth-23924DiVA: diva2:342623
Note
QC 20100525 QC 20110916Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2011-09-16Bibliographically approved

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Sun, Licheng

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