Construction of Low-Dimensional Cadmium Compounds with N₂O/N₂S Donor Tridentate Schiff Base Ligands

Abstract

Self-assemblies of two unsymmetrical tridentate N 2 O/N 2 S donor Schiff base ligands, that is, 2-((2-(dimethylamino-)ethylimino)methyl)phenol (HL 1 ) and methyl-2-pyridylmethylidenehy-drazinecarbodithioate (HL 2 ), with different cadmium salts have led to 11 anion-controlled complexes, namely, [Cd(, and [CdL 2 (SCN) 2 ] n (10), respectively. Eleven compounds were characterized by elemental analyses, IR spectra, MS and thermogravimetric analyses, of which 10 structures 2,

Diverse Structural Ag(I) Supramolecular Complexes Constructed from Multidentate Dicyanoisophorone-Based Ligands: Structures and Enhanced Luminescence

“…Obviously, the red shift and enhancement of the fluorescence intensities are considered to mainly arise from the coordination of metal atom to ligand. The incorporation of Ag­(I) may effectively increase the conformational rigidity of ligand and reduce the loss of energy via intramolecular vibrational and rotational motions . At the same time, the different anions and coordination environments of metal centers may also have an effect on the photoluminescence behaviors of the complexes …”

“…In design and synthesis of supramolecular complexes with intriguing structures and excellent optical properties, the multidentate π-conjugated ligands have been most extensively used due to their good optical properties and their ability to coordinate to metal centers in various modes. , And it is more important that metal–organic complexes have abilities to affect the emission wavelength and intensity of the organic material through metal coordination . The incorporation of metal ion often increases the conformational rigidity of ligand and reduces the loss of energy via intramolecular vibrational and rotational motions . As a result, the improvement of optical properties of organic ligands may be achieved.…”

Iron(III) bis‐complexes of Schiff bases of S‐methyldithiocarbazates: Synthesis, structure, spectral and redox properties and cytotoxicity

“…An ORTEP view of the molecular structure of the cation of 1 appears in Figure a. The iron atom in the complex cation is surrounded by two deprotonated tridentate ligands (L1 ¯ ), each coordinated meridionally through the pyridyl and azomethine nitrogens and thiolato sulfur atom (NNS), with the ligand backbone readily disposed in the E ( syn , syn ) conformation enabling coordination (Scheme ), and both the ligands have an approximately orthogonal arrangement conferring a distorted octahedral geometry on iron(III). While the two central azomethine nitrogen atoms are trans to each other, the terminal thiolato sulfur, and heterocyclic nitrogen atoms are cis to each other.…”

Synthesis, Characterization, and Crystal Structure of a Dinuclear Cadmium(II) Complex Derived From 4-Chloro-2-{[2-(2-Hydroxyethylamino)Ethylimino]Methyl}Phenol

“…[9][10][11][12][13] However, those with the asymmetric tri-or tetradentate Schiff bases are relatively rare. [3,[14][15][16] In this study, a new phenolic O-bridged centrosymmetric dinuclear cadmium(II) complex, [Cd 2 L 2 (NO 3 …”