Synthesis of S,N-chelating heterocyclic thionates of palladium(II). Crystal structure of cis-[Pd(pym2S)(PPh3)2] (pym2S = pyrimidine-2-thionate) |
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Authors: | Serrano José L Pérez José Sánchez Gregorio Martínez José F López Gregorio Molins Elies |
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Institution: | (1) Departamento de Ingeniería Minera, Geológica y Cartográfica, Universidad Politécnica de Cartagena, 30203 Cartagena, Spain;(2) Departamento de Química Inorgánica, Universidad de Murcia, 30071 Murcia, Spain;(3) Institut de Ciéncia de Materials de Barcelona-CSIC, Campus Universitari de Bellaterra, E-08193 Cerdanyola, Barcelona, Spain |
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Abstract: | The synthesis of mononuclear palladium(II) complexes containing chelating heterocyclic thionates is described. The new compounds of general formula cis-Pd(RS-N)(L)
x
](ClO4) x = 2, L = PPh3, RS-N = pyridine-2-thionate (py2S) (1), pyrimidine-2-thionate (pym2S) (2), imidazolidine-2-thionate (imzdS) (3), 1-methylimidazoline-2 thionate (mimzS) (4), 1,3-thiazoline-2-thionate (tzdS) (5); x = 1, L = dppe, RS-N = pyridine-2-thionate (py2S) (6), pyrimidine-2-thionate (pym2S) (7), imidazolidine-2-thionate (imzdS) (8), 1-methylimidazole-2 thionate (mimzS) (9) and 1,3-thiazoline-2-thionate (tzdS) (10)] were prepared by directly reacting the hydroxo-complexes {Pd(PPh3)2(-OH) }2](ClO4)2 and {Pd(dppe)(-OH) }2](ClO4)2 with the corresponding heterocyclic thiones (RS-N)H. The complexes have been characterized by partial elemental analyses, conductance measurements and spectroscopic methods (I.r., FAB, 1H- and 31P-n.m.r.). No evidence for monomer-dimer equilibrium was found in solution. The crystal structure of (2) has been determined by X-ray diffraction analysis. |
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