Salicylaldehyde salicylhydrazone complexes of some transition metal ions

Narang, K. K.; Aggarwal, A.

doi:10.1016/s0020-1693(00)89895-3

Cited by 63 publications

(15 citation statements)

References 34 publications

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“…When two chromophores (--OH and > C = O or > C = N-) are present as in salicylaldehyde (9) and salicylaldimines, one of the bands is observed even in the u.v.-visible border region. The bands at 365,310, 340,355,325 and 320 nm in the ligands (a-f) respectively are characteristic of the salicylaldimine group and similar to those observed in other monoacylhydrazone ligands (1). In metal complexes, chelation of the ligands causes splitting of their bands which are considerably red shifted due to bonding of ligands with the zinc(lI) ion.…”

Section: Electronic Spectrasupporting

confidence: 66%

Zinc(II) complexes of acyldihydrazine Schiff bases

Narang

Lal

1977

Transition Met Chem

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Section: Electronic Spectrasupporting

confidence: 66%

Zinc(II) complexes of acyldihydrazine Schiff bases

Narang

Lal

1977

Transition Met Chem

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“…Much work has been done on crystal and spectral studies of hydrazone complexes with transition metal ions [8][9][10][11][12][13][14][15][16][17][18][19], but the number of crystal structures of lanthanide complexes with tridentate hydrazones is relatively small [20][21][22][23]. This paper presents the characterization of the new complexes formed by the reaction between the complexes of the type [Ln(PBH) 2 (NO 3 ) 3 ]·CH 3 COCH 3 ·2H 2 O (PBH = 2-pyridinecarboxaldehyde benzoyl-hydrazone) [22] and ammonium thiocyanate.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Spectroscopic Characterization, and Crystal Structure of the Lanthanide(III) Complex [Ce(hydrazone)2(NO3)(NCS)(H2O)]NO3�2.35H2O

Paschalidis

Gdaniec

2004

Struct Chem

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Three new lanthanide(III) complexes of the type [Ln(PBH) 2 (NO 3 )(NCS)(H 2 O)]NO 3 ·nH 2 O (PBH = 2-pyridinecarboxaldehyde benzoyl-hydrazone) have been prepared from the complexes [Ln(PBH) 2 (NO 3 ) 3 ]·CH 3 COCH 3 ·2H 2 O by anion metathesis reaction and studied by elemental analyses, IR and UV-Vis spectra. The crystal structure of the [Ce(PBH) 2 (NO 3 )(NCS)(H 2 O)]NO 3 ·2.35H 2 O complex was determined by X-ray diffraction. The crystals of the compound isothiocyanato-nitrato-aquo-bis[N -(2-pyridinylmethylene)-Nbenzoyl-hydrazino]-cerium(III) nitrate 2.35 hydrate are monoclinic with crystallographic P2 1 /n symmetry. The coordination sphere consists of two tridentate 2-pyridinecarboxaldehyde benzoylhydrazone, one bidentate nitrate, one isothiocyanate, and one water molecule as ligands. The coordination polyhedron around the cerium atom can be described as a distorted bicapped square antiprism. The coordination of the hydrazone ligand to the metal atom is accomplished through the pyridine nitrogen, the azomethine nitrogen, and the carbonyl oxygen.

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“…The presence of a band in the 620-675 nm range, however, rules out the reduction of copper(Ill to copper (1).…”

Section: Magnetic Measurementsmentioning

confidence: 97%

Copper(II), nickel(II) and cobalt(II) complexes of oxaldihydrazide and succindihydrazide Schiff bases with salicylaldehyde ando-hydroxyacetophenone

Narang

Lal

1978

Transition Met Chem

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SummaryPolymeric copper(ll), nickel(ll) and cobalt(ll) complexes of the type M2L where M = Cu II, Ni II or Co 11 and H4L = disalicylaldimine oxamide (H4A), di(o-hydroxyacetophenoneimine)oxamide (H4B), disalicylaldimine succinamide (H4C) or di(o-hydroxyacetophenoneimine)succinamide (H4D), have been synthesized and characterized by analysis, i.r. and electronic spectra and magnetic moment data. Copper(ll) complexes and some of the nickel(ll) and cobalt(ll) complexes are planar while other nickel(ll) complexes are distorted octahedral and other cobalt(ll) complexes are square pyramidal. Anomalously low magnetic moments of some complexes have been related to M-M interactions v/a oxo-bridge structures.

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Salicylaldehyde salicylhydrazone complexes of some transition metal ions

Cited by 63 publications

References 34 publications

Zinc(II) complexes of acyldihydrazine Schiff bases

Zinc(II) complexes of acyldihydrazine Schiff bases

Synthesis, Spectroscopic Characterization, and Crystal Structure of the Lanthanide(III) Complex [Ce(hydrazone)2(NO3)(NCS)(H2O)]NO3�2.35H2O

Copper(II), nickel(II) and cobalt(II) complexes of oxaldihydrazide and succindihydrazide Schiff bases with salicylaldehyde ando-hydroxyacetophenone

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