Synthesis, reactivity and characterization of Pt(ii) complexes with N,N′ chelating ligands; structure and dimethylsulfoxide reactivity relationship

2017 ◽  
Vol 46 (5) ◽  
pp. 1467-1480 ◽  
Author(s):  
Konstantinos Ypsilantis ◽  
Theodoros Tsolis ◽  
Andreas Kourtellaris ◽  
Manolis J. Manos ◽  
John C. Plakatouras ◽  
...  
Keyword(s):  
Coordination Sphere ◽  
Chelating Ligands ◽  
Square Planar

Chelated N-heterocycles can be replaced from the coordination sphere of square planar Pt(ii) complexes by DMSO.

Palladium(II), Platinum(II), and Copper(I) N-Bonded Complexes with Thiazolidine-2-thione as Ligand

1973 ◽  
Vol 51 (8) ◽  
pp. 1172-1178 ◽  
Author(s):  
D. De Filippo ◽  
F. Devillanova ◽  
E. F. Trogu ◽  
G. Verani ◽  
C. Preti ◽  
...  
Keyword(s):  
Magnetic Susceptibility ◽  
Coordination Sphere ◽  
Conductivity Measurements ◽  
Polar Solvents ◽  
Square Planar ◽  
Visible Spectra ◽  
Spectrochemical Series ◽  
Bonded Complexes

The preparation and characterization of the (MttznX2) complexes (where M = Pd; or Pt; ttz = thiazolidine-2-thione; n = 2, 3 or 4; X = Cl, Br, I) are reported. By i.r., p.m.r., and u.v.–visible spectra and by magnetic susceptibility and conductivity measurements it appears that in all complexes the ligand is N-bonded to the metal and that many equilibria are present in polar solvents. In particular, for (Mttz4I2)-derivatives there is an equilibrium between a square-planar and a penta-coordinate species. Furthermore, water is competing with the ligands and counterions in the coordination sphere. Our ligand is placed near water in the spectrochemical series. With copper(I) we have obtained complexes of the type (Cuttz3X) (where X = Cl, Br, I, NO3, ClO4, and [Formula: see text]), and in each case the anion is coordinated to the metal. The ttz molecule in these complexes behaves as a hard-base.

scholarly journals Synthesis and characterization of new complexes of Co+2 , Ni+2 , Cu+2 and Zn+2 with (Sodium acetate thio ) ethylene ligands

2013 ◽  
Vol 10 (3) ◽  
pp. 650-657
Author(s):  
Baghdad Science Journal
Keyword(s):  
Content Analysis ◽  
General Formula ◽  
Metal Content ◽  
Sodium Acetate ◽  
Magnetic Measurement ◽  
Synthesis And Characterization ◽  
Square Planar ◽  
Square Planar Complexes ◽  
Uv Visible

This research involves the preparation of new ligands 1,1,2,2- tetrakis (sodium acetate thio)ethylene(L1) and 1,1,2- tris(sodiumacetatethio) ethylene(L2), through the reaction of disodium thioglycolate) with tetra chloro ethylene or tri chloro ethylene in (1:4) or (1:3) moler ratio . Homodinucliar complexes of general formlu [M2(L1)] and [M2(L2)ClH2O] , when M= Co(II), Ni(II), Cu (II) and Zn(II) also mono nuclear complexes of general formula [M(L2)] . The prepared complexes were characterized using spectral method (UV/Visible/ IR) , metal content analysis , magnetic and atomic measurements . The spectral and magnetic measurement indicats that some complexes have tetrahedral or square planar complexes environtment .

Synthesis and Characterization of Cationic Square-Planar Iridium(I) Complexes Containing Chiral Diphosphines

1995 ◽  
Vol 14 (7) ◽  
pp. 3418-3422 ◽  
Author(s):  
Franco Morandini ◽  
Giuseppe Pilloni ◽  
Giambattista Consiglio ◽  
Antonio Mezzetti
Keyword(s):  
Synthesis And Characterization ◽  
Square Planar

scholarly journals Crystal structure of bis(μ2-4-tert-butyl-2-formylphenolato)-1:2κ3O1,O2:O1;3:4κ3O1,O2:O1-bis(4-tert-butyl-2-formylphenolato)-2κ2O1,O2;4κ2O1,O2-di-μ3-methoxido-1:2:3κ3O;1:3:4κ3O-di-μ2-methoxido-1:4κ2O;2:3κ2O-tetracopper(II)

2015 ◽  
Vol 71 (3) ◽  
pp. 324-326
Author(s):  
Bernhard Eberhard Christian Bugenhagen ◽  
Marc Heinrich Prosenc
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Coordination Sphere ◽  
Title Compound ◽  
Coordination Environment ◽  
Dinuclear Copper ◽  
Tert Butyl ◽  
Hydrogen Bonding Interactions ◽  
Square Planar

The structure of the title compound, [Cu4(CH3O)4(C11H13O2)4], consists of dimeric dinuclear copper(II) complexes oriented around a centre of inversion. Within each dinuclear fragment, the two CuIIatoms are in a distorted square-planar coordination sphere. Two neighbouring fragments are linked by four apical Cu—O contacts, yielding an overall square-pyramidal coordination environment for each of the four CuIIatoms. The molecules are arranged in layers parallel to (101). Non-classical C—H...O hydrogen-bonding interactions are observed between the layers.

scholarly journals Crystallographic and structural characterization of heterometallic platinum compounds. Part II. Heterobinuclear Pt compounds with Pt⋯M (M = transition or lantanide metal) > 3.0 Å

2012 ◽  
Vol 10 (6) ◽  
pp. 1709-1759 ◽  
Author(s):  
Milan Melnik ◽  
Ondrej Sprusansky ◽  
Clive Holloway
Keyword(s):  
Transition Metal ◽  
Chlorine Atom ◽  
Structural Characterization ◽  
Platinum Compounds ◽  
Factors Affecting ◽  
Bond Lengths ◽  
Trigonal Bipyramidal ◽  
Square Planar ◽  
Independent Molecules

AbstractThis review covers almost two hundred and twenty heterobinuclear platinum compounds in which Pt⋯M separation is over 3.0 Å. The M is a transition metal (Cu, Ag, Au, Ti, V, Cr, Mo, W, Mn, Re, Fe, Ru, Os, Co, Rh, Ir, Ni and Pd). There is an example of a lanthanide, Yb and a actinide, U. The Pt atom has oxidation numbers 0, +2 and +4. The Pt coordination geometries include trigonal planar Pt(0); square planar Pt(II); trigonal bipyramidal, and pseudo octahedral Pt(IV), with the most frequent being square planar. The most common ligands for Pt are P and C donor atoms, as well as a chlorine atom. The Pt — Ag distance of 3.002(1) Å is the shortest found in this series. There are examples which contain two crystallographically independent molecules, which differ mostly by degree of distortion and even one unique example, which contains eight such molecules. These are examples of distortion isomerism. Factors affecting bond lengths and angles are discussed and some ambiguities in coordination polyhedral are outlined.

New quaternary arsenide oxides with square planar coordination of gold(i) – structure,197Au Mössbauer spectroscopic, XANES and XPS characterization of Nd10Au3As8O10and Sm10Au3As8O10

2015 ◽  
Vol 44 (12) ◽  
pp. 5854-5866 ◽  
Author(s):  
Timo Bartsch ◽  
Oliver Niehaus ◽  
Dirk Johrendt ◽  
Yasuhiro Kobayashi ◽  
Makoto Seto ◽  
...  
Keyword(s):  
Square Planar ◽  
Xps Characterization

The title compounds were synthesised and characterised.

Design and Characterization of New Dinuclear Macrocyclic Dithiocarbamate Complexes by the Preparation of a Free Ligand Derived from Isopropylamine

2021 ◽  
pp. 1-15
Author(s):  
Noor Al-Huda A.H Al-Mohammadi ◽  
Aeed S.M Al-Fahdawi ◽  
Sattar S.I Al-Janabi
Keyword(s):  
Free Ligand ◽  
13C Nmr Spectroscopy ◽  
Macrocyclic Complexes ◽  
Planar Geometry ◽  
Basic Solution ◽  
Square Planar ◽  
Dithiocarbamate Ligand ◽  
Schiff Base Formation ◽  
Base Formation

The synthesis and structural characterization of new dithiocarbamate (DTC) ligand and some of its dinuclear transition metal complexes are described. The free dithiocarbamate ligand was prepared through several synthetic routes, including Schiff-base formation. The reaction of 2-aminopropane with terephthaldehyde leads to the formation of Schiff_base which is reduced by methanolic NaBH4 to the corresponding secondary diamine. Diamine( N,N'_ (1,4 phenylenebis (methylene)) bis(propan-2 amine))  reacts with (CS2) in a basic solution of (KOH) to provide the corresponding bis(dithiocarbamate) free_ligand, which undergoes complexation with the appropriate metal   (II) chloride to constitute macrocyclic complexes. Characterization of the ligand and its complexes was achieved by FTIR, UV-Vis, melting points, conductance, magnetic susceptibility, and 1H, 13C NMR spectroscopy. The analytical and spectroscopic data were employed to obtain the suggested geometries around metal centres. These studies revealed the formation of dinuclear macrocyclic complexes of the general formula [M(L)]2 (where M= Mn(II) , Fe(II), Co(II), Ni(II), Cu(II)  and Zn(II)), with tetrahedral. geometries for Mn(II) , Fe(II), Co(II) and Zn(II),  and square. planar geometry with Ni(II) and Cu(II) complexes.

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