Structural and spectral study of copper(II) complexes of pyridil bis{3-piperidyl-, bis[hexamethyleneiminyl-, bis[N(4)-diethyl-, and bis(N(4)-dipropylthiosemicarbazones}
E. Bermejo et al., Structural and spectral study of copper(II) complexes of pyridil bis{3-piperidyl-, bis[hexamethyleneiminyl-, bis[N(4)-diethyl-, and bis(N(4)-dipropylthiosemicarbazones}, Z ANORG A C, 627(5), 2001, pp. 827-835
Citations number
28
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
dddddPyridil bis(N(4)-substituted thiosemicarbazones) have been prepared in
which the substituents in place of the NH2 group in the thiosemicarbazone
moieties are piperidinyl (H(2)Plpip), hexamethyleneiminyl (H(2)Plhexim), di
ethylaminyl (H(2)Pl4DE), and dipropylaminyl (H(2)Pl4DP). IR, electronic, ma
ss, and ESR spectra of their copper(II) complexes are reported. Crystal str
ucture determinations of H(2)Pl4DE and three of the copper(II) complexes of
formula [Cu(Plpip)], [Cu(Plhexim)] and [Cu(Pl4DE)](2) . 2[Cu(Pl4DE)], are
included. H(2)Pl4DE lacks hydrogen bonding between the thiosemicarbazone mo
ieties, but each moiety is in the Z configuration form with hydrogen bondin
g from the thiosemicarbazone moieties to the pyridyl nitrogen atoms. The cr
ystal used for the structure determination of [Cu(Plhexim)] was isolated fr
om an electrochemical preparation. In all the new compounds the deprotonate
d ligands are N,N,S,S-tetradentate. coordinating to the copper(II) centre t
hrough their azomethine nitrogen atoms and their thiocarbonyl sulfur atoms.