Structural and spectral study of nickel(II) complexes of pyridyl bis{3-piperidyl-, bis{hexamethyleneiminyl-, bis{N(4)-diethyl-, and bis{N(4)-dipropylthiosemicarbazones}
M. Gil et al., Structural and spectral study of nickel(II) complexes of pyridyl bis{3-piperidyl-, bis{hexamethyleneiminyl-, bis{N(4)-diethyl-, and bis{N(4)-dipropylthiosemicarbazones}, Z ANORG A C, 626(11), 2000, pp. 2353-2360
Citations number
24
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
Pyridyl bis(N(4)-substituted thiosemicarbazones), in which the substituents
replacing the NH2 group on the thiosemicarbazone moieties are piperidyl, H
(2)P1pip; hexamethyleneiminyl, H(2)P1hexim; diethylamino, H(2)P14DE; and di
propylamino, H(2)P14DP, have been synthesized. These bis(thiosemicarbazones
) and their nickel(II) complexes have been characterized with IR, electroni
c, mass, and H-1 and C-13 NMR spectra. Crystal structures have been solved
for H(2)P1pip and all four nickel(II) complexes. H(2)P1pip does not possess
hydrogen bonding between the thiosemicarbazone moieties, but is in the Z i
someric form with intramolecular hydrogen bonding from both thiosemicarbazo
ne moieties to pyridine nitrogen atoms. The nickel(II) complexes possess sq
uare-planar N2S2 (i.e., imine nitrogen and thiolato sulfur atoms) centers a
nd the two pyridine ring nitrogen atoms are not coordinated.