Cu(II), Cd(II) and Ni(II) azide complexes incorporating bis(3,5-dimethylpyrazol-1-yl)methane – Synthesis, spectroscopic characterisation, X-ray studies and magnetic properties

Crystal structure of bis(azido-κN)bis[2,5-bis(pyridin-2-yl)-1,3,4-thiadiazole-κ2N2,N3]nickel(II)

“…Related literature 2,5-Bis(pyridin-2-yl)-1,3,4-thiadiazole has been used as a bidentate or tetradentate ligand forming mononuclear (Bentiss et al, 2004(Bentiss et al, , 2011a(Bentiss et al, , 2012Zheng et al, 2006) or dinuclear complexes (Laachir et al, 2013). Coordination of the azide ion to transition metals results in compounds with interesting magnetic properties (Machura et al, 2011;Ś witlicka-Olszewska et al, 2014). The iron salt with the same heterocyclic ligand and thiocyanate as the pseudohalide was reported by Klingele et al (2010).…”

Syntheses, X-ray Crystal Structures, Photoluminescence Properties, Antimicrobial Activities and Hirshfeld Surface of Two New Cd(II) Azide/Thiocyanate Linked Coordination Polymers

“…In the absence of metal ions fluorescence of the ligand is quenched by the PET process due to presence of nonbonding electron pair of electrons of the Schiff base ligand. Such PET process is prevented by the stable compoundations of Schiff base ligand (N, O) donor with Cd(II) metal ions preferably tight flexible binding. Thus the enhanced fluorescence intensity of Cd(II) compunds 1 & 2 may be due to mainly ‘chelation enhanced fluorescence’ (CHEF) .…”

“…To develop diverse topologies and frameworks of coordination polymers, pseudohalides like azide and thiocyanate are known to perform excellent bridging ligands attributed to their smaller length, rigidity and variety of coordination modes of donor atoms . In addition, metal Zn(II) and Cd(II)) coordination polymers which are derived from pseudohalides like azide and thiocyanate are of contemporary interest because of their unique pale color, higher thermally stability and possible luminescence properties …”

Cd(II) Pseudohalide Complexes with N, N′‐Bis(3‐ethoxysalicylidenimino) 1,3‐Diaminopropane: Crystal Structures, Hirshfeld Surface, Antibacterial and Anti‐Biofilm Properties

“…Thus due to rich versatile coordination behavior of these coligands different topological features developed in di/polynuclear complexes depends principally on the nature of coordinated coligand and steric environment imposed by ligand (H 2 L OEt ) and somewhat on the d 10 configuration metal ion. In addition, group 12 metal Cd(II)) di or polynuclear complexes which are derived from pseudohalides azide, thiocyanate ions are of current interest because of their unique pale color, higher thermally stability and possible strong luminescence properties . Cadmium metal is toxic and highly carcinogenic as recognized by the International Agency for Research .…”