title: Dichloro and alkylchloro gallium derivatives of dichalcogenoimidodiphosphinate ligands: isolation of a spirogallium cation.
abstract: Dichloro and chloromethyl Ga(III) complexes of general formulae [XClGa-eta2-{R2P(E)NP(E'R'2-E,E'}](X = Cl, R, R'= Ph, E, E'= O (1), S (2), Se (3); R = Ph, R'= OEt, E = O, E'= S (4); R = Me, R'= Ph, E, E'= S (5) and X = Me, E, E'= O (6), S (7), Se (8)) were synthesised by either metathesis reactions between GaCl3 and the potassium salt of the ligand (X = Cl) or by methane eliminations from in situ prepared GaMe2Cl and the protonated ligands LH (X = Me). Redistribution reaction of (3) in either CDCl3 or THF afforded the solvent-free tetracoordinate gallium spirocycle cation [Ga-{eta2-{Ph2P(Se)NP(Se)Ph2-Se,Se'})2]+ (9+). The molecular structures of complexes 2, 4, 5, 7 and 9(+) show non-planar gallacycle rings.
authors.affiliation: Centro de Investigaciones Quimicas, Universidad Autonoma del Estado de Morelos, Av. Universidad 1001, Col. Chamilpa, Cuernavaca, Morelo, 62210, Mexico. mamund2@buzon.uaem.mx
authors.forename: Miguel-Angel
authors.initials: MA
authors.lastname: Muñoz-Hernández
authors.forename: Virginia
authors.initials: V
authors.lastname: Montiel-Palma
authors.forename: Estefanía
authors.initials: E
authors.lastname: Huitrón-Rattinger
authors.forename: Sara
authors.initials: S
authors.lastname: Cortés-Llamas
authors.forename: Norma
authors.initials: N
authors.lastname: Tiempos-Flores
authors.forename: Jean-Michel
authors.initials: JM
authors.lastname: Grevy
authors.forename: Cristian
authors.initials: C
authors.lastname: Silvestru
authors.forename: Philip
authors.initials: P
authors.lastname: Power