title: Synthesis and solid state characterization of hexacoordinated 1:1 ionic gallium(III) complexes.
abstract: The coordination of the N,N ligands 2,2-bipyridine (bipy) and 1,10-phenanthroline (phen) to Ga(III) has been investigated via the formation of new ionic hexacoordinated complexes of general formula [Q'(2)Ga(N,N)][X], where HQ' stands for 2-methyl-8-hydroxyquinoline and the counter anion X(-) is nitrate (NO(3)(-)) or hexafluorophosphate (PF(6)(-)). All synthesized complexes were characterized by single-crystal X-ray diffraction analysis. The geometry of the Ga(III) cations is octahedral and a single geometric isomer (all N, N trans conformation) has been obtained in all cases. The role of both the N,N ligand and the counter anion has been investigated in the formation of the crystal supramolecular motifs occurring in the 3D-crystal networks of these new class of ionic Ga(III) derivatives. A full investigation of the photophysical properties of the new synthesized ionic species is reported and discussed in relation to their crystalline packing and the degree of crystallinity of thin solid films as well as the nature of the N,N ligand and the counter anion.
authors.affiliation: Centro di Eccellenza CEMIF.CAL, LASCAMM-CR INSTM, Unità INSTM della Calabria, Dipartimento di Chimica-Università della Calabria, 87036, Arcavacata (CS), Italy. a.crispini@unical.it
authors.forename: Alessandra
authors.initials: A
authors.lastname: Crispini
authors.forename: Mauro
authors.initials: M
authors.lastname: Ghedini
authors.forename: Irene
authors.initials: I
authors.lastname: De Franco
authors.forename: Iolinda
authors.initials: I
authors.lastname: Aiello
authors.forename: Massimo
authors.initials: M
authors.lastname: La Deda
authors.forename: Nicolas
authors.initials: N
authors.lastname: Godbert
authors.forename: Anna
authors.initials: A
authors.lastname: Bellusci