Articles written in Journal of Chemical Sciences
Volume 102 Issue 3 June 1990 pp 195-202
Synthetic ferroverdins, NaFe11(RQ)3 afford trinuclear M[Fe(RQ)3]2 upon reaction with bivalent ions (M2+). A probable bonding mode is considered. Ferric ions oxidise ferroverdin to ferriverdin, FeIII(RQ)3. Both
Volume 112 Issue 3 June 2000 pp 427-427
Volume 114 Issue 4 August 2002 pp 417-430
The coordination chemistry of copper(II) with tridentate aroylhydrazones is briefly discussed in this article. Two types of aroylhydrazones derived from aroylhydrazines and ortho-hydroxy aldehydes or 2-pyridine-carboxaldehyde have been used. The characterization of the complexes has been performed with the help of various physico-chemical techniques. Solid state structural patterns have been established by X-ray crystallography. In the solid state, structural varieties of these complexes are seen to range from monomeric, dimeric, polymeric and one-dimensional self-assembly via hydrogen bonds and π-π interactions. EPR spectroscopy and variable temperature magnetic susceptibility measurements have been used to reveal the nature of the coordination geometry and magnetic characteristics of these complexes.
Volume 127 Issue 4 April 2015 pp 589-596 Regular Articles
A facile method for the synthesis of a series of cyclometallated ruthenium(II) carbonyl complexes with 1-pyrenaldehyde 4-
Volume 127 Issue 7 July 2015 pp 1201-1209 Regular Articles
Reactions of CeCl3·6H2O and Gd(NO3)3·5H2O with biacetyl bis(benzoylhydrazone) (H2babh) and KOH in 1:2:2 mole ratio in methanol afford the complexes [Ce(babh)2] (
Volume 129 Issue 8 August 2017 pp 1105-1113 REGULAR ARTICLE
The Schiff bases N-(acyl)-N’-(ferrocenylidene)hydrazines (HFcah (1) and HFcbh (2), where acyl = acetyl in 1 and benzoyl in 2 and H represents the dissociable amide proton) were synthesized in high yields (74 and 81%) by condensation reactions of equimolar amounts of ferrocene-carboxaldehyde and the corresponding acylhydrazines in presence of acetic acid in refluxing methanol.Reactions of Ni(OAc) ₂·4H ₂O, the Schiff bases (1 and 2) and NaOAc ·3H ₂O in 1:2:4 mole ratio in refluxing methanol afforded the diamagnetic iron(II)-nickel(II)- iron(II) species [Ni(Fcah) ₂] (3) and [Ni(Fcbh) ₂] (4) in 60 and 68% yields, respectively. Both Schiff bases and the two trinuclear complexes were characterized by elemental (CHN) analysis, mass spectrometric, various spectroscopic (IR, UV-Vis and 1H NMR) and cyclic voltammetric measurements. Molecular structures of 2, 3and 4 were determined by single crystal X-ray diffraction studies. The cyclopentadienide rings in the ferrocene moieties are essentially in eclipsed conformation in all three structures. Deprotonated Schiff base ligands in each complex (Fcah− in 3 and Fcbh− in 4) act as five-membered chelate ring forming azomethine-N and amidate-O donors and assemble a square-planar trans-N ₂O ₂ coordination environment around the nickel centre. The redox active 1–4 exhibit an iron centred redox couple in the potential range 0.23–0.50 V (vs. Ag/AgCl).
Volume 132, 2020
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