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Institucional

Granifo, Juan

SYNTHESIS OF MONONUCLEAR AND BINUCLEAR TRIPHENYLPHOSPHINE COMPLEXES [(MO(CO)3(PPH3))(N)(DPP)] (N=1,2 DPP=2,3-BIS(2-PYRIDYL)PYRAZINE) AND THE FORMATION OF HETEROBIMETALLIC DERIVATIVES WITH MO-DPP-M (M=CO, NI) ARRAYS

PERGAMON-ELSEVIER SCIENCE LTD

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The new mono- and binuclear triphenylphosphine complexes [{MO(CO)3 (PPh3)}n(dpp)] (n = 1,2; dpp = 2,3-bis(2-pyridyl)pyrazine) have been prepared by using as a, precursor the acetonitrile derivatives [{Mo(CO)3(NCMe)}n(dpp)] (n = 1,2). These acetonitrile intermediates were obtained by refluxing the [{Mo(CO)4}n(dpp)] (n = 1,2) complexes with MeCN. The solvatochromic properties of the tricarbonyl complexes [{Mo(CO)3(PPh3)}n(dpp)] (n = 1,2) are discussed in comparison with those of their parent tetracarbonyl complexes [{MO(CO)4}n(dpp)] (n = 1,2). In addition, the mononuclear species [{Mo(CO)3(PPh3)}n(dpp)] and [{Mo(CO)4}n(dpp)] were selected to study their ligating aptitude in the presence of the coordinative unsaturated [M(hfaC)2] (M = Co, Ni) complexes; heterobimetallic compounds with Mo-dpp-M arrays were isolated. The new substances were characterized by IR, electronic spectroscopy and magnetic moment measurements.#Los nuevos complejos de trifenilfosfina mono- y binucleares [{MO(CO)3 (PPh3)}n(dpp)] (n = 1,2; dpp = 2,3-bis(2-piridil)pirazina) se han preparado utilizando como precursor los derivados de acetonitrilo [{Mo(CO)3(NCMe)}n(dpp)] (n = 1,2). Estos intermedios de acetonitrilo se obtuvieron por reflujo de los complejos [{Mo(CO)4}n(dpp)] (n = 1,2) con MeCN. Se discuten las propiedades solvatocrómicas de los complejos tricarbonílicos [{Mo(CO)3(PPh3)}n(dpp)] (n = 1,2) en comparación con las de sus complejos tetracarbonílicos precursores [{MO(CO)4}n(dpp)] (n = 1,2). Además, se seleccionaron las especies mononucleares [{Mo(CO)3(PPh3)}n(dpp)] y [{Mo(CO)4}n(dpp)] para estudiar su capacidad de ligación en presencia de los complejos coordinativos insaturados [M(hfaC)2] (M = Co, Ni); se aislaron compuestos heterobimetálicos con estructuras Mo-dpp-M. Las nuevas sustancias se caracterizaron mediante espectroscopia IR, espectroscopia electrónica y mediciones de momento magnético.

artículo original

10.1016/S0277-5387(00)81673-3

BIMETALLIC COMPLEXES

DIIMINE LIGANDS

COMPLEJOS BIMETÁLICOS

LIGANDOS DE DIIMINA

BIMETALLIC COMPLEXES

DIIMINE LIGANDS

COMPLEJOS BIMETÁLICOS

LIGANDOS DE DIIMINA

Química Inorgánica y Nuclear

Otras Especialidades de la Química

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SYNTHESIS OF MONONUCLEAR AND BINUCLEAR TRIPHENYLPHOSPHINE COMPLEXES [(MO(CO)3(PPH3))(N)(DPP)] (N=1,2 DPP=2,3-BIS(2-PYRIDYL)PYRAZINE) AND THE FORMATION OF HETEROBIMETALLIC DERIVATIVES WITH MO-DPP-M (M=CO, NI) ARRAYS

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artículo original

PERGAMON-ELSEVIER SCIENCE LTD

0277-5387

713

716

Chemistry, Inorganic & Nuclear

Crystallography

WOS:A1994NC54500002