SÍNTESIS Y CARACTERIZACIÓN DE DOS NUEVAS OXIMAS DERIVADAS DEL 4-DIMETILAMINO BENZILO.
Autores: M. Moncada, A. Poveda, C . Vargas.
Rev. Col. Quim., 13,1,(1984)
Resumen:
El presente artículo describe la síntesis de dos nuevos ligantes: la 4—Dimetilamino benzilmonoxima y la 4—Dimetilamino benzildioxima derivadas del 4—Dimetilamino benzilo; y su caracterización por métodos instrumentales. De acuerdo a nuestros resultados, la síntesis de la 4—Dimetilamino benzildioxima propuesta por Rense et al (9) no corresponde a este compuesto.
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Rev. Col. Quim., 13,1,(1984)
Resumen:
El presente artículo describe la síntesis de dos nuevos ligantes: la 4—Dimetilamino benzilmonoxima y la 4—Dimetilamino benzildioxima derivadas del 4—Dimetilamino benzilo; y su caracterización por métodos instrumentales. De acuerdo a nuestros resultados, la síntesis de la 4—Dimetilamino benzildioxima propuesta por Rense et al (9) no corresponde a este compuesto.
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TRIS (DIALKYLDITHIOCARBAMATO) DIAZENIDO(1-) AND HYDRAZIDO(2-) MOLYBDENUM COMPLEXES: SYNTHESIS AND REACTIVITY IN ACID MEDIUM.
Authors: Pablo C. Riveros, Isabel C. Perilla, Arnulfo Poveda, Heimo J. Keller, H. Pritzkow.
Polyhedron, 19, 22-23, 2327,(2000)
Abstract:
A series of new molybdenum complexes have been synthesized, with p-nitrobenzoyldiazenido(1-) and benzoylhydrazido(2-) as ligands, and dialkyldithio-carbamatos as coligands. Reactions of these compounds with aqueous and methanolic HCl were carried out but the attempted separation of the aroyl group was unsuccessful. Only the reaction of 1 and 2 with HCl in methanol gave a product, identified as [Mo{S2CN(C2H5)2}4][MoCl4(OCH3)2]. The complexes were characterized by elemental analysis, IR spectroscopy, 1H and 13C NMR, and mass spectrometry. Single crystals of 2 were obtained and the crystal structure was determined. The Mo atom is heptacoordinated; one diazenido(1-) and three diethyldithiocarbamatos act as ligands. From the latter one sulfur is in trans-position to the diazenido-nitrogen atom and the other five sulfur atoms lie in a plane giving a distorted pentagonal-bipyramidal coordination.
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Polyhedron, 19, 22-23, 2327,(2000)
Abstract:
A series of new molybdenum complexes have been synthesized, with p-nitrobenzoyldiazenido(1-) and benzoylhydrazido(2-) as ligands, and dialkyldithio-carbamatos as coligands. Reactions of these compounds with aqueous and methanolic HCl were carried out but the attempted separation of the aroyl group was unsuccessful. Only the reaction of 1 and 2 with HCl in methanol gave a product, identified as [Mo{S2CN(C2H5)2}4][MoCl4(OCH3)2]. The complexes were characterized by elemental analysis, IR spectroscopy, 1H and 13C NMR, and mass spectrometry. Single crystals of 2 were obtained and the crystal structure was determined. The Mo atom is heptacoordinated; one diazenido(1-) and three diethyldithiocarbamatos act as ligands. From the latter one sulfur is in trans-position to the diazenido-nitrogen atom and the other five sulfur atoms lie in a plane giving a distorted pentagonal-bipyramidal coordination.
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BIS(α,β-DIONEDIOXIMATO)METAL COMPLEXES: SOLID-STATE DESIGN BY MOLECULAR ENGINEERING
Authors: H. Endres, H. J. Keller, R. Lehmann, H. Van De Sand, Dong Vu and Arnulfo Poveda
Annnals of the New York Academy of Sciences, 313, 1 (1978)
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Annnals of the New York Academy of Sciences, 313, 1 (1978)
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Kristallstruktur von Bis(N.N’‐bis(8‐chinoyl) aethylendiaminato)nickel(II).
Linear chain bis (α, β‐dionedioximato) metal compounds of the nickel triad: Solid state design by molecular engineering
Authors: Endres, H., Keller, H.J., Lehmann, R., Poveda, A., Rupp, H.H., van de Sand, H.
Z.Natrureforsch. B, 32, 5 (1977)
1977, Z.Naturforsch. 32B, pp. 516 ff.
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Z.Natrureforsch. B, 32, 5 (1977)
1977, Z.Naturforsch. 32B, pp. 516 ff.
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REVIEW: SOME CONSIDERATIONS ABOUT COORDINATION COMPOUNDS WITH END-ON DINITROGEN
Authors: Arnulfo Poveda, Isabel C. Perilla & Carmen R. Pérez.
J. Coordination Chem., 54, 3-4, 427-440, (2001)
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J. Coordination Chem., 54, 3-4, 427-440, (2001)
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Comparative study of the pi-acceptor character of some diatomic ligands based on quantum chemistry
Authors: Arnulfo Poveda, Isabel C. Perilla and Carmen R. Pérez.
J. Coordination Chem., 54, 3-4, 415-426,(2001)
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J. Coordination Chem., 54, 3-4, 415-426,(2001)
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Spectroscopic Evidence of in situ Formation of a Novel Tetrakis(Tetrazolato)Iron Compound
Authors: Mabel A. Caipa, Arnulfo Poveda & Isabel C. Perilla.
J. Coordination Chem., 56, 5, 353-361,(2003)
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J. Coordination Chem., 56, 5, 353-361,(2003)
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Metallchelate von 2-Amino-cyclopenten-(1)-dithiocarbonsäure-(1)