Platinum(II) complexes of 2-(dimethylamino)ethylselenolate - donor-acceptor inter-ligand interactions as evident from experimental and TD-DFT computational analysis

, , , , und . European Journal of Inorganic Chemistry (2001)


Several platinum(II) complexes of 2-(dimethylamino)ethaneselenolate PtCl(SeCH2CH2NMe2)(PR3) (1), PtPh(SeCH2CH2NMe2)(PBu3) (2), Pt2Ph2(Cl)(SeCH2CH2NMe2)(PBu3)2 (3), Pt2Cl3(SeCH2CH2NMe2)(PR3)2 (4), Pt(SeCH2CH2NMe2)2(P-P) (5), Pt2(SeCH2CH2NMe2)2(P-P)2++ (6), and Pt(SeCH2CH2NMe2)(PPh3)nPF6n (7) were synthesized and characterized by elemental anal., UV/visible and NMR (1H, 31P, 77Se, 195Pt) spectroscopy. The stereochem. of these complexes (1-7) was deduced from NMR spectroscopic data. A weak absorption in the UV/visible spectrum of 1 was assigned to a ligand (Se)-to-ligand (PR3) charge transfer (LLCT), supported by TD-DFT calcns. The structures of PtCl(SeCH2CH2NMe2)(PPh3) and Pt2Ph2(Cl)(SeCH2CH2NMe2)(PBu3)2 were established by single crystal x-ray diffraction anal. Each platinum atom in the latter is coordinated to four different ligands and Me2NCH2CH2Se behaves as m2-bridging and is also simultaneously chelated to one of the platinum atoms. on SciFinder(R)

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