Co(II), Ni(II), Cu(II), and Zn(II) complexes of (4E)-4-[(2-{(E)-[1-(2,4-dihydroxyphenyl)ethylidene]amino}ethyl)imino]pentan-2-one have been synthesized and characterized by elemental analyses, molar conductance, electronic and IR spectral studies, and XRD. FTIR confirmed the ligand coordinates the metal ion to form mononuclear complex via the oxygen and nitrogen atoms of the phenolic group and ...

Series of coordination complexes of Ni(II), Cu(II), Zn(II), Cd(II) and Sn(II) metal with 4-amino-5-(pyridyl)-4H-1,2,4-triazole-3-thiol, as a ligand has been successfully prepared in alcoholic medium. The prepared complexes were characterized quantitatively and qualitatively by using: microelemental analysis, FTIR spectroscopy, UV-visible spectroscopy, (1)H and (13)C NMR, magnetic susceptibility...

Alcoholato Complexes, Cobalt(II) Chlorides Alcoholato complexes of cobalt(II) chloride with the general formula, C0CI2 • x R O H (where R = Me, Et, Pr», Bu», Bu«, Bu* and Bu') have been synthesised by the reactions of anhydrous C0CI2 with an excess of the appropriate alcohols under reflux. Physicochemical studies such as electronic, infra-red spectra, magnetic and conductivity measurements have...

STEPS is a stochastic reaction-diffusion simulation engine that implements a spatial extension of Gillespie's Stochastic Simulation Algorithm (SSA) in complex tetrahedral geometries. An extensive Python-based interface is provided to STEPS so that it can interact with the large number of scientific packages in Python. However, a gap existed between the interfaces of these packages and the STEPS...

I give a survey of different combinatorial forms of alternating-sign matrices, starting with the original form introduced by Mills, Robbins and Rumsey as well as corner-sum matrices, height-function matrices, threecolorings, monotone triangles, tetrahedral order ideals, square ice, gasketand-basket tilings and full packings of loops. (This article has been published in a conference edition of t...

Copper (II), cobalt (II), nickel (II) and zinc (II) complexes of 5-chloroisatin Schiff base (L) (L= Schiff base derived from 5-chloroisatin and 2-methyl-4nitro aniline) were synthesized and characterized. The authenticity of the ligand and its metal complexes had been established by micro analysis, IR, NMR, LC/MS, UV-Vis and electrical conductance measurements. The ligand acts as a bidentate in...

A bishydrazone was obtained by the condensation of isatin monohydrazone with 2hydroxyquinoline-3-carbaldehyde, which formed a series of complexes with Co(II), Ni(II), Cu(II), Zn(II), Cd(II) and Hg(II). The ligand and its metal complexes were characterized on the basis of elemental analysis, conductance data, magnetic susceptibility measurements, IR, UV-Vis, mass, H NMR, ESR and XRD studies. By ...

A series of metal complexes of Cu(II), Ni(II) and Co(II) having the general composition [M(L)2]Cl2 [where L= m-nitrobenzaldehyde-4-(4'-sulphoamidephenyl)-3-thiosemicarbazone; M = Cu(II), Ni(II) and Co(II)] have been prepared and characterized by elemental analysis, spectral (IR and H NMR) studies, molar conductance, magnetic susceptibility measurements and thermogravimetric analysis. The spectr...

A new series of vanadyl(IV), manganese(II), iron(II), nickel(II) and copper(II) complexes of N-[phenyl(pyrrolidin-1-yl)methyl]benzamide(PBB) have been synthesized and characterized by elemental analysis, molar conductance, IR, electronic, EPR spectra and magnetic measurements. Conductance measurements indicate that the above complexes are non-electrolytes. The spectral data show that, the ligan...

The presented approach to discretization of functionally defined heterogeneous objects is oriented towards applications associated with numerical simulation procedures, for example, finite element analysis (FEA). Such applications impose specific constraints upon the resulting surface and volume meshes in terms of their topology and metric characteristics, exactness of the geometry approximatio...