Synthesis, crystal structures, photoluminescence, electrochemistry and DFT study of aluminium(III) and gallium(III) complexes containing a novel tetradentate Schiff base ligand

Acta Crystallographica. Section C, Structural Chemistry
James Charles TruscottHendrik Gideon Visser

Abstract

Single crystals of the aluminium and gallium complexes of 6,6'-{(1E,1'E)-[1,2-phenylenebis(azanylylidene)]bis(methanylylidene)}bis(2-methoxyphenol), namely diaqua(6,6'-{(1E,1'E)-[1,2-phenylenebis(azanylylidene)]bis(methanylylidene)}bis(2-methoxyphenolato)-κ4O1,N,N',O1')aluminium(III) nitrate ethanol monosolvate, [Al(C22H18N2O4)(H2O)2]NO3·C2H5OH, 1, and diaqua(6,6'-{(1E,1'E)-[1,2-phenylenebis(azanylylidene)]bis(methanylylidene)}bis(2-methoxyphenolato)-κ4O1,N,N',O1')gallium(III) nitrate ethanol monosolvate, [Ga(C22H18N2O4)(H2O)2]NO3·C2H5OH, 2, were obtained after successful synthesis in ethanol. Both complexes crystallized in the triclinic space group P-1, with two molecules in the asymmetric unit. In both structures, in one of the independent molecules the tetradentate ligand is almost planar while in the other independent molecule the ligand shows significant distortions from planarity, as illustrated by the largest distance from the plane constructed through the central metal atom and the O,N,N',O'-coordinating atoms of the ligand in 1 of 1.155 (3) Å and a distance of 1.1707 (3) Å in 2. The possible reason for this is that there are various strong π-interactions in the structures. This was confirmed by density functional theor...Continue Reading

References

Dec 1, 1981·Proceedings of the National Academy of Sciences of the United States of America·D W MilesH Eyring
Feb 5, 2002·Inorganic Chemistry·Stephen J ObreyAndrew R Barron
Dec 25, 2007·Acta Crystallographica. Section A, Foundations of Crystallography·George M Sheldrick
Apr 12, 2013·Dalton Transactions : an International Journal of Inorganic Chemistry·Shyamaprosad GoswamiShampa Chakraborty
Jan 9, 2015·Acta Crystallographica. Section C, Structural Chemistry·George M Sheldrick
Jul 6, 2016·Acta Crystallographica. Section C, Structural Chemistry·Yasemin Yahsi

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