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  • 1
    ISSN: 1572-8854
    Keywords: Magnesium chloride complexes ; 2,4-pentanedione ; Ziegler-Natta catalysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The crystal structures of two cocrystallized complexes of MgCl2 with 2,4-pentanedione have been determined. The conglomerate crystallizes in the monoclinic system, space groupP 21/c (No. 14);a=7.835(2),b=18.169(4),c=13.303(3) Å, β=90.70(2)°,Z=4. The former complex is a dimer which consists of two octahedra sharing one edge by two chlorine bridges between the metal atoms. The chelate ring in the equatorial plane and two apical water molecules realize the coordination polyhedron around each Mg atom. In the latter complex the metal lies at the center of a slightly distorted octahedron formed by six oxygens, four from two chelate ligands and two from apical water molecules.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 1998 (1998), S. 1689-1697 
    ISSN: 1434-1948
    Keywords: Phosphanyl-amine ; Nickel ; Coordination chemistry ; Pentacoordinate Ni complexes ; Tetracoordinate Ni complexes ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: New neutral pentacoordinate nickel(II) complexes of the type [NiCl2(PR3)(P∩N)] [PR3 = PMe3, PMe2Ph, PMePh2; P∩N = 2-(diphenylphosphanyl)aniline (P∩NH2), N-methyl-2-(diphenylphosphanyl)aniline (P∩NHMe), N,N-dimethyl-2-(diphenylphosphanyl)aniline (P∩NMe2)], as well as cationic tetracoordinate nickel(II) complexes of the type [NiCl(PR3)(P∩N)]+ have been synthesized and characterized both in the solid state and in solution. Interesting X-ray structural data have been collected for each class of compounds, which show, inter alia, that the pentacoordinate neutral complexes can be isolated in two different molecular forms, namely square-pyramidal or bipyramidal-trigonal.Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2005/1998/98102_s.pdf or from the author.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 1998 (1998), S. 1811-1820 
    ISSN: 1434-1948
    Keywords: Phosphanyl-amine ; Phosphanyl-imine ; Palladium ; Organometallic complexes ; Crystal structure ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: New neutral organometallic palladium(II) complexes, [PdPhI(PNMe2)] (1), [PdPhI(PC=NMe)] (2), [PdPhI(PC=NEt)] (3), and [PdMeCl(PNMe2)] (4), {PNMe2 means N,N-dimethyl-2-(diphenylphosphanyl)aniline; PC=NMe means N-[2-(diphenylphosphanyl)benzylidene]-N-methylamine; PC=NEt means N-[2-(diphenylphosphanyl)benzylidene]-N-ethylamine} have been synthesized by oxidative addition of PhI to [Pd(dba)2] in the presence of the P∩N ligand (1-3), or by substitution reaction on [PdMeCl(COD)] with PNMe2 (4). Cationic σ-organometallic species [PdR(PPh3)(P∩N)]+ are obtained upon treating complexes of the type [PdRX(P∩N)] with PPh3 and AgCF3SO3 and consist predominantly of the trans-P,P isomer in CDCl3 solution, as shown by NMR spectroscopic studies. The cationic η3-allyl complex [Pd(η3-all)(PNMe2)]PF6 has also been prepared and characterized, both in solution and in the solid state. Compounds [PdPhI(PNMe2)] (P21/n), [PdPhI(PC=NMe)] (P1¯), [PdPhI(PC=NEt)] (P1¯), and [Pd(η3-all)(PNMe2)]PF6 (P1¯) have been authenticated by X-ray analysis
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
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