Issue 5, 2001

Copper(II), cobalt(II), nickel(II) and zinc(II) complexes containing the enolate of N-acetyl-3-butanoyltetramic acid (Habta) and its phenylhydrazone derivative analogues. Crystal structure of [Cu(abta)2(py)2]·2H2O

Abstract

Reaction of N-acetyl-3-butanoyltetramic acid (N-acetyl-3-butanoyl-4-hydroxypyrrolidin-2-one) (Habta) with M(CH3CO2)2·xH2O (x = 1, 2 or 4; M = CuII, CoII or NiII) in a 1  1 ratio gave M(CH3CO2)(abta)·yH2O 1, 3, 5 and in 1  2 ratio M(abta)2·y′H2O 2, 4, 6. A new ligand, the phenylhydrazone of Habta (HPhabta), has been prepared and reacts with M(CH3CO2)2·xH2O (x = 2 or 4; M = CuII or CoII) in a 1  1 and 1  2 ratio to give the analogous complexes M(CH3CO2)(Phabta)·zH2O 9, 11 and M(Phabta)2·z′H2O 10 respectively. The solid state structure of [Cu(abta)2(py)2]· 2H2O 2a has been determined by single crystal X-ray diffraction. It shows that copper adopts a slightly distorted octahedral co-ordination geometry with the abta enolate ligand adopting an O,O′ mode of co-ordination via the functionalities associated with C4 and the acyl group at C3 in the pyrrolidine ring. The reaction of Habta with Zn(CH3CO2)2·2H2O in 1  1 ratio gives a complex 7 with a deacetylated ligand whereas, with 1  2 ratio, Zn(abta)2·2H2O 8 is obtained. In contrast the reaction of HPhabta with Zn(CH3CO2)2·2H2O, irrespective of the metal to ligand ratio, gives Zn(CH3CO2)(Phbta)·2H2O 12 containing the deacetylated ligand.

Graphical abstract: Copper(II), cobalt(II), nickel(II) and zinc(II) complexes containing the enolate of N-acetyl-3-butanoyltetramic acid (Habta) and its phenylhydrazone derivative analogues. Crystal structure of [Cu(abta)2(py)2]·2H2O [ ]

Supplementary files

Article information

Article type
Paper
Submitted
07 Sep 2000
Accepted
09 Jan 2001
First published
12 Feb 2001

J. Chem. Soc., Dalton Trans., 2001, 639-644

Copper(II), cobalt(II), nickel(II) and zinc(II) complexes containing the enolate of N-acetyl-3-butanoyltetramic acid (Habta) and its phenylhydrazone derivative analogues. Crystal structure of [Cu(abta)2(py)2]·2H2O

E. Gavrielatos, C. Mitsos, G. Athanasellis, B. T. Heaton, A. Steiner, J. F. Bickley, O. Igglessi-Markopoulou and J. Markopoulos, J. Chem. Soc., Dalton Trans., 2001, 639 DOI: 10.1039/B007252O

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Spotlight

Advertisements