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Coordination of water to organolead(IV) nitrates: The examples of [PbPh2(NO3)2(H2O)2] and [PbMe3(NO3)(H2O)] |
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| Authors: | José S. CasasM. Victoria Castañ o,Eduardo E. CastellanoMarí a D. Couce,Agustí n Sá nchezJosé Sordo,M. Dolores Torres |
| Affiliation: | a Departamento de Química Inorgánica, Facultades de Química y Farmacia, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Galicia, Spain b Instituto de Física de São Carlos, Universidade de São Paulo, CP 369, CEP 13560-905, São Carlos, Brazil c Departamento de Química Inorgánica, Facultad de Química, Universidad de Vigo, 36310 Vigo, Galicia, Spain |
| Abstract: | The compound [PbPh2(NO3)2(H2O)2] was synthesized and characterized by spectroscopic methods (IR; 1H, 13C and 207Pb NMR) and mass spectrometry. An X-ray diffraction study showed that the crystal is a supramolecular tridimensional network of hydrogen-bonded PbPh2(NO3)2(H2O)2 units in which the Pb atom is octacoordinated and adopts a distorted hexagonal bipyramidal geometry, with four O (bidentate nitrate) and two O (water) atoms in equatorial positions and two C-phenyl atoms in axial positions. The crystal of [PbMe3(NO3)(H2O)], obtained as a byproduct in the synthesis of PbMe2(NO3)2, contains chains of hydrogen-bonded PbMe3(NO3)(H2O) units in which the Pb atom is pentacoordinated with a slightly distorted trigonal bipyramidal environment. In this arrangement the three C-methyl atoms are equatorial and the O atoms from the monodentate nitrate and the water molecule are axial. |
| Keywords: | Diphenyl- and trimethyllead(IV) Water coordinated X-ray structures NMR spectroscopy |
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