The Crystal Structure of cis -Dichloro(2,2′-oxydi-3-butene)platinum(II), PtCl 2 ((CH 2 =CH—CH(CH 3 )) 2 O) (original) (raw)
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The crystal and molecular structure of a Cis dimetalated complex of platinum(II)
Inorganica Chimica Acta, 1980
A cycle dimetalated complex of Pt(II), [Bz,(C,-H4CHJP],Pt, can be prepared from (q3-2-methyl-allylPtOAc), and PBz3. The X-ray structure determination of this complex is reported here. The crystals are triclinic (space group Pi) with a = l&536(2), b = 10.500(l), c = 10.053(l) i$ (Y = 90.27(I), B = 95.16(3), 7 = 83.84(2) deg, Z = 2, d, = 1.54 g cmS3. The structure was solved by Patterson and Fourier methods and refined by 1.~. methods to a conventional R factor of 0.035, based on 4769 intensities above background. The molecule, of approximate C2 symmetry, shows a distorted square planar geomem, the metal atom being coordinated to two phosphonrs atoms cis to each other and to two ortho carbon atoms of two phenyl rings again in mutual cis relation. The phosphines thus act as chelating ligands and the resulting jive-membered Pt-P-Lxx rings are puckered. The mean Pt-P and Pt&C distances are 2.2 77(2) and 2.06 7(7) A respectively and the P-Pt-P angle is 106.0(l)".
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
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 ...
Structural characterization of the ‘lantern-shaped’ platinum(III) complex [Pt2Cl2{N(H)C(But)O}4]
Polyhedron, 2002
The synthesis of a new platinum(III) 'lantern-shaped' complex with amidate bridging ligands, [Pt 2 Cl 2 {N(H)C(Bu t )O} 4 ] (1), is described. Complex 1 has been structurally characterized by X-ray diffraction and compared with the related compound [Pt 2 I 2 {N(H)C(Me)O} 4 ] (2). The two complexes exhibit very short N···O bite distances which are similar in the two cases but the Pt(III) Pt(III) distance is significantly shorter in 1 than in 2.
Structural Aspects of Monomeric Platinum Coordination Complexes
Materials Sciences and Applications, 2014
This review covers structural parameters of almost two thousand monomeric Pt coordination complexes. The Pt is found in the oxidation states zero, +1, +2, +3 and +4, from which oxidation state +2 by far prevails. There is a wide variety of donor atom ligands from uni-, bi-, ter-and tetradentate with over seventeen types of donor atoms, from which by far prevails P and N donor ligands and chlorine atom. The Pt(0) atoms are two-, three-and four-coordinated; Pt(I) and Pt(III) are only four-coordinated, Pt(II) are four-and five-coordinated, and Pt(IV) are five-and six-coordinated. About 10% of these complexes exist as isomers. Included are distortion (65%), cis-trans (30%), mixed isomers and ligand isomerism. The structural parameters are discussed in terms of the coordination about the platinum atom, and correlations are drawn between donor atom, bond length and interbond angles with attention to any trans-effect.
Reviews in Inorganic Chemistry, 2014
This review covers almost 100 organoplatinum complexes: trimers (40 examples), tetramers (40 examples), pentamers (4 examples), hexamers (5 examples), nona-and oligomers (8 examples). Platinum is predominantly found in the oxidation states +2 and +4. A number of coordination geometries are observed, the most common being essentially square planar, especially with Pt(II), and distorted octahedral, especially with Pt(IV). The most common ligands are methyl, carbonyl, PX 3 and bis(diphenylphosphine)methane. Relationships between the Pt-Pt distances, Pt-X-Pt bridge angles, Pt-L bond distances and covalent radii of coordinated atoms are discussed. The mean Pt-Pt bond distance elongates in the order of nuclearity: 269.0 pm (trimers) < 270.5 pm (tetramers) < 271.5 pm (dimers) < 278.0 pm (oligomers). A comprehensive brief discussion on over 1600 organoplatinum complexes and over 2500 platinum coordination complexes is given. These complexes prefer to crystallize in monoclinic (53%) and triclinic (27%) crystal classes. About l0% of these 4100 plus complexes exist as isomers. It is observed that these isomers are more often stereoisomers than structural isomers and that distortion isomerism is surprisingly more common than the better known cis-trans isomerism, especially in the chemistry of Pt(II) complexes.
Inorganica Chimica Acta, 1990
The reaction of the complexes K[Pt(Me,SO)Xs] (X = Cl, Br) with MeCN in water results in the isolation of solid cis-[Pt(MezSO)(MeCN)X2] complexes. The latter complexes were characterized by the elemental analysis, IR and 'H NMR spectra and their structure was determined by the X-ray analysis. The complexes cis-[Pt(Me2SO)(MeCN)X2] are isostructural. cis-[Pt(Me,SO)(MeCN)C12] crystallizes in the triclinic space group Pi. The unit cell parameters are: a = 7.346(l), b = 8.865(l), c = 14.886(2) a, CY = 90.58(l), fl = 96.10(l), y = 87&l(2)", V = 962.9(3) A3, pcA = 2.65 g cmw3, Z = 4; bond lengths in two crystallographically independent molecules (a): pt-Cl (trans to N) 2.278(2), 2.278(2); Pt-Cl (truns to S) 2.310(3), 2.322(3), Pt-N 1.977(g), 1.956(8); Pt-S 2.216(2), 2.224(3). cis-[Pt(MezSO)(MeCN)Br2] crystallizes in the triclinic space group Pi. The unit cell parameters are: a = 7.569(l), b = 9.053(2), c = 15.014(3) 8. (Y = 90.33(l), 0 = 95.20(l), y = 87.12(l)", V = 1023.3(4) A3, pcalc = 3.08 g cme3, Z = 4; bond lengths in two crystallographically independent molecules (A) are: Pt-Br (trans to N) 2.397(2), 2.394(2), Pt-Br (Vans to S) 2.429(2), 2.427(2), F'-N 1.983(13), 1.986(14), pt-S 2.228(4), 2.233(5). Comparison of the data with those known from the literature suggests a mutual ligands influence in the cis-[Pt(Me2SO)(ligand)Xz] complexes.