Том 56, № 4 ЖУРНАЛ СТРУКТУРНОЙ ХИМИИ Июль UDC 548.73:541.49:546.92 STRUCTURAL AND MASS SPECTROMETRIC CHARACTERISATION OF THE DINUCLEAR PLATINUM(II) SELENIDO-PHENYLSELENOLATO COMPLEX [Pt2(µ-Se)(µ-SePh)(PPh3)4]PF6 R.G. Fortney-Zirker, W. Henderson, B.K. Nicholson Department of Chemistry, University of Waikato, Hamilton, New Zealand E-mail: w.henderson@waikato.ac.nz Received November, 27, 2013 The reaction of [Pt2(µ-Se)2(PPh3)4] with diphenyliodonium bromide gave [Pt2(µ-Se)(µ-SePh)⋅ ⋅(PPh3)4]+ through arylation of a selenide ligand. <...> The complex is characterised by 31P NMR spectroscopy, elemental microanalysis, ESI mass spectrometry, and a single crystal X-ray diffraction study, which showed the four-membered {Pt2Se2} ring to be slightly puckered. <...> DOI: 10.15372/JSC20150417 Keywords: platinum complexes, dinuclear complexes, selenide ligand, phenylselenolato ligand, arylation, crystal structure, electrospray mass spectrometry. <...> Dinuclear platinum(II) sulfide complex [Pt2(µ-S)2(PPh3)4] 1a [ 1 ] and analogues with alternative phosphine [ 2, 3 ] or arsine [ 4 ] ligands have been extensively investigated over a considerable length of time [ 5 ] because of the rich and diverse chemistry they display. <...> Electrospray mass spectra were recorded in a dichloromethanemethanol solution using a Bruker MicrOTOF instrument, periodically calibrated using sodium formate, and employing a capillary exit voltage of 150 V for routine spectra, but higher voltages to inves© Fortney-Zirker R.G., Henderson W., Nicholson B.K., 2015 С. 780 – 785 ЖУРНАЛ СТРУКТУРНОЙ ХИМИИ. 2015. <...> Т. 56, № 4 781 tigate fragmentation behaviour. 31P{1H} NMR spectra were recorded on a Bruker Avance spectrometer operating at 162 MHz, and the spectra were referenced relative to external H3PO4. <...> Preparation. [Pt2(µ-Se)2(PPh3)4] (315 mg, 0.197 mmol) and Ph2IBr (76 mg, 0.211 mmol) were suspended in methanol (35 ml) and the mixture was stirred at room temperature for 72 h, giving a clear deep orange-brown solution. <...> After filtration to remove traces of insoluble matter, NH4PF6 (400 mg, 2.45 mmol) was added to the stirred filtrate, giving an orange-brown precipitate <...>