Structural characterization of five-coordinate copper(II), nickel(II), and cobalt(II) thiocyanato complexes derived from bis(2-(3,5-dimethyl-1-pyrazolyl)ethyl)amine

Steric Effects of Alkyl Substituents at N-Donor Bidentate Amines Direct the Nuclearity, Bonding and Bridging Modes in Isothiocyanato-Copper(II) Coordination Compounds

“…Inspection of the acetonitrile solutions of the UV-Vis spectral data of the coordination compounds 1-4, shown in Table 1, reveals some common spectral features as they display broad maxima in the 615-656 nm region. This feature is consistent with five-coordinate Cu(II) compounds with square pyramidal geometry (SP) which may be associated with a low-energy shoulder at λ > 800 nm [28][29][30][31]42,43,[45][46][47][48][49][50]. The presence of the small intense maxima at 974 nm in compound 1 may reflect the increased distortion towards the trigonal bipyramidal geometry (TBP) [45].…”

Synthesis, Structure, and Properties of Coordination Polymers with Layered Transition‐Metal Thiocyanato Networks

“…This is one of the reasons why an increasing number of new compounds with different structures containing this ligand have been recently reported. [1][2][3][4][5][6][7][8][9][10][11][12][13] A similar situation is also found for selenocyanato coordination compounds, but they have been less investigated. [14][15][16][17][18][19][20] In this context, compounds in which paramagnetic metal cations are linked by the anionic ligands into coordination polymers are of special interest, because they show a rich variety of magnetic properties.…”

Mononuclear five-coordinate cobalt(II) complexes with N4-coordinate pyrazole based ligand and pseudohalogens: synthesis, structures, DNA and protein binding study

“…There are only a few reports on five-coordinate cobalt(II) complexes with nitrogen coordinating ligands [29][30][31][32][33][34][35][36][37][38]. We have synthesized and structurally characterized new five-coordinate cobalt(II) complexes with trigonal bipyramidal geometry using tetradentate N 4 ligand and pseudohalides.…”