Polymeric end-to-end bibridged cadmium(II)thiocyanates containing monodentate and bidentate N-donor organic blockers: supramolecular synthons based on π–π and/or C–H⋯π interactions

New Cu(II) complexes with polydentate chelating Schiff base ligands: Synthesis, structures, characterisations and biochemical activity studies

“…The axial distance is 2.1828(18) Å which is longer than the average equatorial distances. Copper atom is displaced towards the amino nitrogen [N (7)] and away from the pyridine nitrogen [N (5)]. The deviation from the trigonal bipyramidal geometry is indicated by the equatorial bond angles that vary from 81.53(7) to 96.31(7) • from their normal value of 90 • .…”

“…The flexibility of disposition of different donor sites is the secret behind their successful performance in mimicking peculiar geometries around the metal centers, leading to very interesting spectroscopic properties with varied magnetic activities [4]. Among all the transition metal complexes, Cu(II) Schiff base complexes with pseudohalides are well known for their preparational accessibilities, exhibiting the flexibility of the coordination geometry around the metal center [5,6]. The coordination number usually varies from four to six depending upon the donor site geometry around the metal and above all the steric constraints imposed by the ligand itself.…”

Cd(II) and Zn(II) Complexes Containing N,N'-Bidentate N-(Pyridin-2-ylmethylene)cyclopentanamine: Synthesis, Characterisation and Methyl Methacrylate Polymerisation

“…Transition metal complexes containing ancillary ligands, pyridyl-imines and N-substituted 2-iminoalkylpyridines have been applied for synthetic, spectroscopic and kinetic studies, [1][2][3][4][5][6][7][8][9][10] photoluminescence and photochemistry, 11 as catalysts for organic transformation, [12][13][14][15][16][17][18] electrochemistry, [19][20][21] bioinorganic chemistry, 22,23 supramolecular chemistry, 24,25 molecular magnetism [26][27][28][29] and olefin polymerisation. [30][31][32][33][34][35][36][37][38][39][40][41][42][43][44] In contrast, poly(methylmethacrylate) (PMMA) is a universal polymer with optical applications.…”

Synthesis, crystal and molecular structures of 1D and 2D supramers of copper(II) with N,N′-{bis(pyridin-2-yl) benzylidene}butane-1,4-diamine

“…Self-assembly [3] is the most efficient synthetic approach in this regard and judicious choice of building units in preassigned ratios may lead to different molecular and crystalline architectures with tunable properties [4,5]. Pseudohalides [6], especially azide, are a remarkable monoatomic (end-on) and/or polyatomic (endto-end) bridging system in this respect. Schiff bases have recently [7] been focussed on by the coordination chemists as versatile organic blockers because of their preparative accessibilities, structural varieties, and varied denticities.…”