71132-85-9Relevant academic research and scientific papers
Solvent-induced synthesis and crystal structures of copper(II) complexes derived from 4-chloro-2-[(2-hydroxymethylphenylimino)methyl]phenol with antibacterial activity
Liu, Cheng
, p. 2972 - 2983 (2022/02/07)
Two new polynuclear copper(II) complexes, [Cu2L2] (1) and [Cu4L4]CH2Cl2 (2), where L is 4-chloro-2-[(2-hydroxymethylphenylimino)methyl]phenolate, were synthesized and characterized by IR and UV–Vis spectroscopy. The molecular structures of the complexes were confirmed by single-crystal X-ray determination. The Cu ions in dinuclear complex 1 are in square planar coordination, while those in tetranuclear complex 2 are in square pyramidal coordination. The solvents used in the synthesis and crystallization play an important role for the formation of the final structures of the complexes. The Schiff base and two copper complexes were assayed for antibacterial activities by the MTT method.
Dimetallic manganese(II) complexes with ONO donor tridentate schiff bases derived from ortho-aminobenzyl alcohol and salicylaldehyde or substituted salicylaldehydes
Syamal A.,Gupta, B. K.
, p. 495 - 497 (2007/10/02)
A few new dimetallic manganese(II) complexes of the type 2 (where AAAH2 = schiff base derived from salicylaldehyde, 5-nitrosalicylaldehyde, 5-chlorosalicylaldehyde, 5-bromosalicylaldehyde, 3,5-dichlorosalicylaldehyde or 2-hydroxy-1-naphthaldehyde and ortho-aminobenzyl alcohol) have been synthesized and characterized on the basis of elemental analysis, molecular weight, electrical conductance, infrared spectra and magnetic susceptibility measurements.The schiff bases act as ONO donor dibasic tridentate ligands.A dimetallic six-coordinated and octahedral μ-bis(schiff base) tetraaquodimanganese (II) structure is suggested for the complexes.
Copper(II) Complexes of Tridentate Dibasic Schiff Bases Derived from Salicylaldehyde, Substituted Salicylaldehydes and o-Aminobenzyl Alcohol
Syamal, A.,Kale, K. S.
, p. 205 - 208 (2007/10/02)
New copper(II) complexes of the schiff bases derived from salicylaldehyde, 5-bromosalicylaldehyde, 5-chlorosalicylaldehyde, 3-methoxysalicylaldehyde, 3,5-dichlorosalicylaldehyde and o-aminobenzyl alcohol have been prepared and characterized on the basis of elemental analyses, electronic and infrared spectra and magnetic susceptibility measurements (83-294K).The schiff bases behave as tridentate dibasic ONO donors forming complexes with 1:1 (metal:ligand) stoichiometry.The complexes exhibit subnormal magnetic moment (μeff = 0.98-1.48 B.M. at room temperature).The effective magnetic moments of the complexes decrease significantly as the temperature is lowered indicating the presence of antiferromagnetic exchange.The exchange interaction constant (-J) of the complexes is in the range 189-382 cm-1.The complexes exhibit a d-d band around 16000 cm-1.A dimetallic structure with aminobenzyl alcoholic oxygen atoms as the bridging atoms is proposed.
Magnetic Properties of New Oxovanadium(IV) Complexes of Tridentate Dibasic Schiff Bases Derived from Salicylaldehyde or Substituted Salicylaldehyde and o-Aminobenzyl alcohol
Syamal, A.,Kale, K. S.
, p. 225 - 228 (2007/10/02)
Some new oxovanadium(IV) complexes of the schiff bases derivad from salicylaldehyde, 5-chlorosalicylaldehyde, 5-bromosalicylaldehyde, 3-methoxysalicylaldehyde, 3-ethoxysalicylaldehyde and o-aminobenzyl alcohol have been prepared and characterized on the basis of elemental analysis, electronic and infrared spectra, and magnetic susceptibility measuerments (83-294 K).The complexes exhibit subnormal magnetic moments (μeff = 1.18-1.57 B.M. at room temperature).The effective magnetic moments of the complexes decrease significantly as the temperature is lowered indicating the presence of antiferromagnetic exchange with S = 0 as the ground state.The exchange integral (J) of the complexes is in the range 121-245 cm-1.The complexes exhibit the ν V=O frequency in the region 910-985 cm-1.The complexes show three electronic spectral bands around 13000, 18000 and 22000 cm-1 due to the transitions dxy --> dxz, dyz; dxy --> dxz-yz; and dxy --> dz2 respectively.On the basis of infrared spectra and magnetic susceptibility data a dimeric structure with aminobenzylalcoholic oxygen atoms as the bridging atoms, is suggested.
New Oxozirconium(IV) Complexes with the Schiff Bases Derived from Salicylaldehyde or Substituted Salicylaldehydes and o-Aminobenzyl Alcohol
Syamal, A.,Kumar, D.
, p. 1018 - 1020 (2007/10/02)
Several new oxozirconium(IV) complexes with the schiff bases obtained from salicylaldehyde, 5-chlorosalicylaldehyde, 5-bromosalicylaldehyde, 5-nitrosalicylaldehyde, 4-methoxysalicylaldehyde, 5-methoxysalicylaldehyde, 3-ethoxysalicylaldehyde, 3,5-dichlorosalicylaldehyde or 2-hydroxy-1-naphthaldehyde and o-aminobenzyl alcohol have been synthesized and characterised on the basis of elemental analysis, molecular weight, electrical conductance, infrared spectral and magnetic susceptibility measurements.The schiff bases behave as monobasic, tridentate ONO donor ligands.The complexes are of the type ZrO(LH)2 (where LH2 = tridentate schiff base) and are seven-coordinated.The complexes are monomers, non-electrolytes and diamagnetic.Changes in the νC=N, νC-O (phenolic) and νC-O (alcoholic) frequencies have been followed to find out the coordination sites of the ligands.
