Citation
Gs. Papaefstathiou et al., Defective double-cubane, tetranuclear manganese(II) and cobalt(II) complexes with simultaneous mu(1,1)-Azido and mu-O bridges, EUR J INORG, (6), 2001, pp. 1567-1574
Citations number
54
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
ISSN journal
14341948
→ ACNP
Issue
6
Year of publication
2001
Pages
1567 - 1574
Database
ISI
SICI code
1434-1948(200106):6<1567:DDTMAC>2.0.ZU;2-Q
Abstract
The reactions of M(O2CCH(3))(2). 4H(2)O (M= Mn, Co) with di-2-pyridyl keton
e, (py)(2)CO, and NaN3 in CH3OH or CH3OH/ H2O allow isolation of the tetran
uclear compounds [Mn-4(mu (1.1)-N-3)(2)(N-3)(2){(py)(2)C(OH)O}(2){(py)(2)C(
OCH3)O}(2)] (1) and [Co-4(mu (1.1)-N-3)(2)(N-3)(2){(py)(2)C(OH)O}(2){(py)(2
)C(OCH3)O}(2)]. 2H(2)O (2). X-ray diffraction analysis reveals defective do
uble-cubane tetrameric entities in which the Mn-II or Co-II atoms are linke
d by mu (1.1)-N-3 bridges and two kinds of O-bridges. The molar magnetic su
sceptibility measurements of 1 and 2 in the 2-300 K range indicate weak ant
iferromagnetic coupling for 1 and clear bulk ferromagnetic coupling for 2.