RT info:eu-repo/semantics/article
T1 Syntheses, solid structures, and behavior in solution of [MI2(CO)3(pyrazole)2] complexes (M = Mo, W)
A1 Paredes, Paloma
A1 Lorenzo, Fernando
A1 Bajo, Sonia
A1 Cuéllar González, Elena
A1 Strohmann, Carsten
A1 Martín Álvarez, José Miguel
A1 Miguel San José, Daniel
A1 Villafañe González, Fernando
K1 Pyrazole
K1 Molibdeno
K1 Isómeros
AB [MI2(CO)3(pz*H)2] complexes (M = Mo, W; pz*H = pzH, dmpzH, indzH) have been synthesized and characterized in solid state and in solution. These heptacoordinated complexes present a capped octahedron geometry in the solid state where the azole ligands are always coordinated pseudo-cis, and the iodido ligands are coordinated either pseudo-trans (pzH complexes and molybdenum complex with indzH) or pseudo-cis (tungsten complex with dmpzH). Both isomers are found in the crystal structure of [WI2(CO)3(indzH)2]. The difference in energies between both isomers have been theoretically calculated and range between −2.9 and +1.0 kcal/mol. The complexes where the iodido ligands are coordinated pseudo-trans show unequivalent azoles in the NMR at low temperature while they undergo a dynamic process in solution which makes both heterocycles equivalent at room temperature. The other complexes display a dynamic behavior in solution where both heterocycles are equivalent both at room and at low temperatures.
PB Elsevier
SN 0020-1693
YR 2017
FD 2017
LK http://uvadoc.uva.es/handle/10324/28713
UL http://uvadoc.uva.es/handle/10324/28713
LA eng
NO Inorganica Chimica Acta, 2017, Volume 456, Pages 9-17
NO Producción Científica
DS UVaDOC
RD 22-dic-2024