ISSN:
0009-2940
Keywords:
Copper complexes
;
Polyolate metal complexes
;
Ethylenediolate complexes
;
Oxolanediolate complexes
;
Mannosidate complexes
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Polyol Metal Complexes, II[1]. - Copper(II) Complexes with Multiply Deprotonated Ethylene Glycol, Anhydro-erythritol, or Methyl α-D-Mannopyranoside as LigandsViolet to blue crystals of the polyolate cuprates Li2[Cu(eth2-)2] · 6 H2O (1), A2[Cu(eryAn2-)2] · 4 H2O, A = Na (2a), K (2b), and Li3[Cu(Me-α-manpH2[2,3]2-)(Me-α-manpH[2,3,4]3-)] · 5 H2O (3) with anionic ligands derived from ethylene glycol (ethH2), anhydro-erythritol (eryAnH2), or methyl α-D-mannopyranoside (Me-α-manpH4), resp., are formed by the reaction of alkali metal hydroxide with cupric hydroxide and the proper polyol in aqueous solution. X-ray crystal structure determinations were carried out on all new compounds. In 1-3 deprotonated polyols form chelate complexes with copper ions; additonally, the polyolate ligands bind to alkali metal ions and/or they act as acceptors in asymmetric hydrogen bonds. In 3 one of the two O-2,O-3-mannosidato ligands is present as a trianion: O-4 is deprotonated, too, but instead of copper, the O-4-alkoxide group binds two lithium ions. The new compounds are discussed with respect to copper complexes of cellulose in alkaline media.
Additional Material:
5 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19921250409
