Crystal and molecular structures of trans-dichloro- (ethylene) (4-methylpyridine)platinum(II) and trans-dicldoro( ethylene) (2,4,6-trimethylpyridine)platinum(II) (original) (raw)
Related papers
Canadian Journal of Chemistry, 1973
The reaction of K2PtCl4 with CH3—CH=CH—CH2—OH yields the complex cis-[PtCl2((CH2=CH—CH(CH3))2O)]. The crystals are triclinic, space group [Formula: see text], a = 9.420(2) Å, b = 8.359(4) Å, c = 7.837(4) Å, α = 91.10(4)°, β = 62.13(4)°, γ = 80.80(5)°, and Z = 2. The structure, solved by standard methods, has been refined anisotropically by full matrix least-squares methods to a R factor of 0.052 by use of 2441 independent observed reflections. The complex is a monomer, where both double bonds of the diolefin ether are coordinated to the platinum atom as in Zeise's salt. The usual square planar coordination of platinum(II) is completed by two chlorine atoms. The (=CH2) groups of both double bonds are found on the same side of the coordination plane. Various possible conformations of the coordinated ligand in the complex are discussed.
J Chem Crystallography, 1977
The structures of the olefinic complexes of platinum(II) withcis-but-2-en-1,4-diammonium, [PtCl3(C4H12N2)]+, and withcis-pent-2-enylammonium, [PtCl3(C5H12N)], the first one as its chloride, have been determined by single-crystal X-ray methods. The compounds form yellow monoclinic crystals, witha=11.238(3),b=12.234(4),c=7.769(1) Å, ß = 112.99(2) ° anda= 11.530(3),b=9.037(3),c= 10.067(3) Å, ß=105.50(2) °, respectively; both crystallize in the space groupP21/c withZ=4. The structures, solved by standard methods, have been
Central European Journal of Chemistry, 2011
This review covers almost 290 heterobinuclear Pt derivatives. When the heterometals (M) are non transition and the binuclear are found both with and without a metal to metal bond. Where M is a transition metal or actinide, only those with a metal-metal bond have been included here. There are thirteen non-transition metals (Sn, Hg, Ge, Sb, Tl, Zn, Pb, Cd, Na, K, Ga, Ca and In). The shortest Pt-M bond distance is 235.2(1) (Pt-Ge). There are eighteen transition metals (Fe, W, Rh, Re, Pd, Ag, Ir, Mo, Mn, Re, Co, Cu, Cr, Au, Ni, Ti, Ta and V). The shortest Pt-M bond distance is 249.5(2) pm (Pt-Cr). There is one example of an actinide, Pt-Th at 298.4(1) pm. The Pt atom has oxidation numbers 0, +2 and +4. The Pt coordination geometries include square planar (most common), trigonal bipyramidal, pseudo octahedral (Pt(IV)) and a few prevalently capped trigonal prismatic seven coordinate species. There are at least two types of isomerism distortion and polymerisation. Factors affecting bond le...
Australian Journal of Chemistry
Two complexes, namely, chloro[N-(2-aminoethyl)-N-(2-ammonioethyl)ethane-1,2-diamine]platinum(II) chloride {[PtCl(tren+H)]Cl2} and dichloro[4,7-diaza-1-azoniacyclononane]platinum(II) tetrachloroplatinate(II)–water (1/2) {[PtCl2(tacn+H)]2[PtCl4]·2H2O}, have been prepared and structurally characterized by single-crystal X-ray diffractometry as part of a study of the nature and strength of Pt···H(–N) interactions. Crystals of [PtCl(tren+H)]Cl2 are monoclinic, space group P21/c, a 8.293(2), b 14.396(6), c 11.305(3) Å, β 107.34(2)º, Z 4, and the structure has been refined to a residual of 0.042 based on 1631 reflections. Crystals of [PtCl2(tacn+H)]2[PtCl4]·2H2O are monoclinic, space group P21/a, a 12.834(4), b 8.206(4), c 13.116(8) Å, β 93.01(4)˚, Z 2, and the structure has been refined to a residual of 0.035 based on 1974 reflections. In [PtCl(tren+H)]2+, the protonated amine forms hydrogen bonds with chloride anions and no close contacts with the metal ion. In [PtCl2(tacn+H)]+, a short ...
Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry, 1975
Crystals of bis-[(3,6-diethyl-4-octyne-3,6-diol)]platinum(0), Pt[(C2HshC(OH)C~_-CC(OH)(C2H5)2],, are monoclinic, space group C2/c (C62h) with four molecules in a unit cell of dimensions a=21.751 (5), b= 9.275 (6), c= 17.079 (9) ,~ and fl= 129.54 (4) °. X-ray diffracted intensities were measured on a fourcircle diffractometer using 0-20 scans and graphite-monochromatized Mo Kct radiation. The structure was solved by the heavy-atom method. Full-matrix least-squares refinement gave a final R of 0.074, and Rw of 0.075 based on the 2695 reflexions with I> 3tr(1). The crystal structure is composed of molecules lying on the twofold (crystallographic) axis through the Pt atom. The prominent feature of the molecular geometry is that the two acetylenic groups bonded to the central Pt atom are 180 ° apart and perpendicular to each other. The bond distances are 2.066 (1 I), 2.043 (11). A_ for Pt-C, 1.35 (3), 1.36 (2) for C-~=C, and 1.95, 1.93 A for Pt _I_C-=-_-C. Each molecule is stabilized by four OH. •-O hydrogen bonds.
Open Chemistry, 2013
This review article includes over three hundred and sixty heterotrinuclear platinum complexes of the composition Pt2M (205 examples), PtM2 (132 examples) and PtMM (24 examples). The heterometals include the non-transition and transition metals. Three metal atoms form a wide variability of frameworks: M3 triangular, dicapped M3 triangular, V shaped M3, M3 linear, five-, six- and seven- metallocycles and unique structures of which triangular and linear are the most common. This has led to a rich chemistry of platinum not only from variability of metals, but also from their framework and stereochemistry. The shortest Pt-M (non-transition) and Pt-M (transition) bonds are 2.315(1) Å for Pt-Ga and 2.4896(9) Å for Pt-Co. The shortest Pt-Pt bond distance is 2.581(1) Å. Two complexes exist in two isomeric forms and several others contain crystallographically independent molecules. All are typical examples of distortion isomerism. Correlations between structural parameters, heterometal and li...
Acta Chimica Slovenica, 2015
A novel platinum(II) complex with 2-hydroxy-6-methylpyridine (Hmhp), trans-[PtCl 2 (dmso)(Hmhp)] • H 2 O, crystallizes in the space group P 2 1 /n with a = 11.5505(1) Å, b = 8.9467(1) Å, c = 14.6047(2) Å and β = 112.3919(6)°. The platinum ion is in the expected square-planar environment. The 2-hydroxy-6-methylpyridine ligand is coordinated to the metal ion in a monodentate manner via nitrogen. The plane of the aromatic ligand is nearly perpendicular to the platinum coordination plane. The Pt(II) ion is shielded with pyridine ortho substituents above and below the square coordination plane of platinum. Hydrogen bonding between the complex molecules and the H 2 O molecules of crystallization produces infinite two-dimensional layers. Weak intermolecular interactions of the C-H•••Cl type link the layers into a three-dimensional structure.
Two forms of cis-dimethylbis(methyl isocyanide)platinum(II)
Acta Crystallographica Section C Crystal Structure Communications
The compound [Pt(CH3)2(C2H3N)2] crystallized in two different space groups [orthorhombic, (1), and monoclinic, (2)] depending on the solvent used. The structures were solved by single-crystal X-ray diffraction analyses. In both structures, the stereochemistry at Pt ~I is cis square planar. The Pt-C(methyl) distances are 2.066(7) and 2.078 (8)A in (1) and 2.07(3) and 2.06(2)/1, in (2), and the Pt-C(isocyanide) distances are 1.979 (8) and 1.953 (7)/~ in (1) and 1.96(2) and 2.02(3)A in (2). The difference in the quality of these two structure determinations appears to have stemmed from a poor absorption correction resulting from the cut faces and platy nature of the crystal of (2).