Infrared and UV-Vis studies of copper(II) complexes of 3,6-bis((saliclidenamino)ethyl)- sulfanylpyridazine.

<b>Spectroscopic studies of some lanthanide(III) nitrate complexes synthesized from a new ligand 2,6-bis-(salicylaldehyde hydrazone)-4-chlorophenol</b>

“…The first method involves condensation of keto precursors with polyamines by the template method [11,12] and in the second method, the ligand is first synthesized and isolated and the metal ion added to prepare the complexes [13,14]. In our previous research on transition metal complexes we have used both routes [15][16][17][18]. Herein we report the reaction of H 5 L with a range of Ln (Ln = La, Ce, Pr, Nd, Sm, Gd, Dy, Er, Yb and Y) to give {[Ln 2 (H 4 L) 3 (NO 3 )](NO 3 ) 2 .mH 2 O}.…”

Solvent Extraction Studies on Copper(II) and Silver(I) Complexes of Bis(4‐hydroxypent‐2‐ylidene)diaminoethane: Composition of Extracted Copper(II) Species

“…The slope of the curve in Figure 2 gives the value of 1.0 implying 1:1 Cu-BHPDE mole ratio. This result is supported by the fact that at low pH (10 -3 -10 -1 M, acid) the ligand is protonated and can complex with copper as a neutral molecule [20][21] . On the basis of this, extraction of copper(II) could be explained using the following equations.…”

Dichiral [4.4.3.01,5]tridecane copper(II) cluster derived from a tripodal ligand having unsymmetrical podands and the linker: Synthesis, structure, surface grafting and catalytic aspects

“…The CuO stretching vibrations generally lie between 345 and 305 cm −1 , therefore, were not observed in the FT‐IR spectrum recorded in 4000–400 cm −1 . [ 57 ] The ESI‐MS spectrum was consisted of a peak at m/z 1091.88 due to dinuclear cluster (Cu[N{CH (CH 2 Ph)CH 2 OH}{CH 2 (4BrC 6 H 3 O)}{CH 2 (2CHO4MeC 6 H 2 O)}]) 2 (see Figures S13–S15) .…”

“…The Cu O stretching vibrations generally lie between 345 and 305 cm −1 , therefore, were not observed in the FT-IR spectrum recorded in 4000-400 cm −1 . [57] The…”