Structural and spectral study of nickel(II) complexes of pyridyl bis{3-piperidyl-, bis{hexamethyleneiminyl-, bis{N(4)-diethyl-, and bis{N(4)-dipropylthiosemicarbazones}

Citation
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
ISSN journal
0044-2313 → ACNP
Volume
626
Issue
11
Year of publication
2000
Pages
2353 - 2360
Database
ISI
SICI code
0044-2313(200011)626:11<2353:SASSON>2.0.ZU;2-2
Abstract
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.