Preparation, crystal structure and spectroscopic characterization of [Ga(OH)(SO4)(terpy)(H2O)]center dot H2O (terpy=2,2 ': 6 ',2-terpyridine): The first characterized gallium(III) sulfato complex

作者：Sofetis A; Papaefstathiou GS; Terzis A; Raptopoulou CP; Zafiropoulos TF^*

来源：Zeitschrift fur Naturforschung Section B-A Journal of Chemical Sciences, 2004, 59(3): 291-297.

• crystal structure
• gallium(III) sulfate complex
• terminal hydroxo ligands
• 2,2 ': 6 ',2 ''-terpyridine complexes

The reaction of Ga-2(SO4)(3).18H(2)O and excess 2,2':6',2"-terpyridine (terpy) in MeOH / H2O leads to [Ga(OH)(SO4)(terpy)(H2O)].H2O (1.H2O] in good yield. The structure of the complex has been determined by single-crystal X-ray crystallography. The Ga-III atom in 1.H2O is 6-coordinate and ligation is provided by one terdentate terpy molecule, one monodentate sulfate, one terminal hydroxide and one terminal H2O molecule; the coodination polyhedron about the metal is described as a distorted octahedron. There is an extensive hydrogen-bonding network in the crystal structure which generates corrugated layers parallel to bc. The new complex was characterized by IR and H-1 NMR spectroscopy. The spectroscopic data are discussed in terms of the nature of bonding.

• 出版日期2004-3