Premium
First Crystallographic Investigation of Complexes of cis ‐VO 2 + , cis ‐MoO 2 2+ , and trans ‐UO 2 2+ Species with Schiff‐Base Molecules Derived from 4,6‐ O ‐Ethylidene‐β‐ D ‐glucopyranosylamine
Author(s) -
Sah Ajay K.,
Rao Chebrolu P.,
Saarenketo Pauli K.,
Wegelius Elina K.,
Kolehmainen Erkki,
Rissanen Kari
Publication year - 2001
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/1099-0682(200111)2001:11<2773::aid-ejic2773>3.0.co;2-t
Subject(s) - chemistry , pentagonal bipyramidal molecular geometry , schiff base , crystallography , octahedron , ligand (biochemistry) , trigonal bipyramidal molecular geometry , crystal structure , moiety , molecule , intermolecular force , bipyramid , stereochemistry , organic chemistry , biochemistry , receptor
The interaction of Schiff‐base ligands derived from 4,6‐ O ‐ethylidene‐β‐ D ‐glucopyranosylamine with cis ‐VO 2 + , cis ‐MoO 2 2+ , and trans ‐UO 2 2+ species have been studied by isolating and characterizing the corresponding products. The structures of one complex of each type of species have been established by single‐crystal X‐ray diffraction analysis. In all the complexes, the saccharide moiety adopts a chair conformation and has a β‐anomeric form. A gradual increase in coordination number (5, 6, and 7) and a gradual variation in the geometry (distorted trigonal‐bipyramidal, distorted octahedral, and pentagonal‐bipyramidal) are observed on going from the complexes of cis ‐VO 2 + (mononuclear) to cis ‐MoO 2 2+ (mononuclear) to trans ‐UO 2 2+ (dinuclear). A variation in the binding mode of the ligand towards these dioxometal species is also observed. Intermolecular interactions of the type O−H ··· O, C−H ··· O, and N−H ··· O present in the lattices of these complexes lead to the formation of interesting structures.