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  • 1
    Digitale Medien
    Digitale Medien
    Tetraaza macrocyclic metal complexes containing a medium-sized chelate ring. 1. Syntheses and characterization of nickel(II) complexes with 1,4,7,10-tetraazacyclotetradecane, -cyclopentadecane, and -cyclohexadecane (1983)
    s.l. : American Chemical Society
    Inorganic chemistry 22 (1983), S. 950-954 
    Details
    ISSN: 1520-510X
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/ic00148a020
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  • 2
    Digitale Medien
    Digitale Medien
    Synthesis of cyclopalladated 2-(1-pyrrolyl)pyrimidine derivatives (1987)
    Springer
    Transition metal chemistry 12 (1987), S. 1-3 
    Details
    ISSN: 1572-901X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Summary 2-(1-Pyrrolyl)pyrimidine(Hprpm) is cyclopalladated with lithium tetrachloropalladate in methanol in the presence of sodium acetate to give PdCl(prpm). This complex reacts with dimethylsulfoxide(dmso), pyridine(py). tri-n-butylphosphine(PBu3), tri-p-tolylphosphine(Ptol3), triphenylarsine(AsPh3), and acetylacetone(Hacac) to give PdCl(prpm)L (L=dmso, py, PBu3, Ptol3, AsPh3) and Pd(prpm)(acac), respectively. These complexes were characterized spectroscopically. The deprotonated ligand, prpm, is cyclopalladated and coordinated through pyrimidine-N and pyrrole-2C atoms to form a five membered palladaheterocycle.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01023116
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  • 3
    Digitale Medien
    Digitale Medien
    Convenient synthesis of 2-(2-pyridyl)-1, 3-diaminopropane, and its copper(II), nickel(II), and cobalt(III) complexes (1987)
    Springer
    Transition metal chemistry 12 (1987), S. 497-500 
    Details
    ISSN: 1572-901X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Summary 2-(2-Pyridyl)-1, 3-propanediol was converted into the diacetate, which was then condensed with phthalimide. The product was hydrolyzed with hydrochloric acid to give 2-(2-pyridyl)-1, 3-diaminopropane. The free amine gave 1∶2 complexes with copper(II), nickel(II), and cobalt(III), which were characterized spectroscopically and magnetically. Features of the amine as a ligand are discussed. A few related complexes were also studied.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01023833
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  • 4
    Digitale Medien
    Digitale Medien
    Direct cycloauration of 1-(2-pyridylamino and 2-pyrimidinylamino)naphthalene and 2-(p-toluidino)quinoline with sodium tetrachloroaurate(III) (1999)
    Springer
    Transition metal chemistry 24 (1999), S. 449-453 
    Details
    ISSN: 1572-901X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Abstract 1-(2-Pyridylamino and 2-pyrimidinylamino)naphthalene (abbreviated as Hpyn and Hpmn, respectively) and 2-(p-toluidino)quinoline (Htlq) were directly cycloaurated with Na[AuCl4] to give [AuCl2L] (L = pyn, pmn, or tlq). These complexes were characterized spectroscopically and the square planar structure of [AuCl2(pmn)] was determined by X-ray analysis. The naphthalene ring was aurated at position 2, forming a six-membered auraheterocycle with concomitant coordination of the pyrimidine-N atom. The trans influence of the carbon donor was clearly reflected in the Au–Cl bond lengths; 2.372(2) trans to C and 2.275Å trans to N. Similar square planar structures were suggested for the other two complexes.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1023/A:1006979503280
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  • 5
    Digitale Medien
    Digitale Medien
    Cyclometallation of 2-(2-thienyl)pyridine and 2-(3-thienyl)pyridine with palladium(II), rhodium(III) and ruthenium(II) (1981)
    Springer
    Transition metal chemistry 6 (1981), S. 163-165 
    Details
    ISSN: 1572-901X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Summary 2-(2-Thienyl)pyridine [H(2-tp)] and 2-(3-thienyl)pyridine [H(3-tp)] react with lithium tetrachloropalladate(II), hexachlorotetrakis(tri-n-butylphosphine) dirhodium(III), and tetrachlorohexacarbonyldiruthenium(II) to give [PdCl(C-N)]2-(CN=2-tp and 3-tp), [RhCl2(C-N)PBu3]2 (C-N = 2-tp and 3-tp), and [RuCl(2-tp)(CO)2]2, respectively. Some bromo analogues are also prepared. These complexes react with pyridine and tri-n-butylphosphine to give adducts in which 2-tp is chelated through pyridine-N and thiophene-3-C and 3-tp through pyridine-N and thiophene-2-C atoms. The structures of these complexes are similar to those of the corresponding complexes of cyclometallated 2-phenylpyridine.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00624336
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  • 6
    Digitale Medien
    Digitale Medien
    Six-membered palladacycles formed by cyclopalladation of 2-anilinopyridine derivatives (1982)
    Springer
    Transition metal chemistry 7 (1982), S. 281-284 
    Details
    ISSN: 1572-901X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Summary Reactions of palladium(II) chloride with 2-substituted pyridines (HL), 2-(p-R-C6H4-Y)-C5H4N (R = H, CH3, Cl; Y= NH, NCH3, O, S, CH2) form 1∶2 complexestrans-[PdCl2(HL)2], HL being coordinated through a pyridine-N atom. When the ratio PdCl2/HL = 1/1, the pyridine derivatives with Y = NH are cyclopalladated to form another type of complexes [PdClL]2. In [PdClL]2 the deprotonated ligand L is chelated through pyridine-N and phenylortho-C atoms forming an unusual six-membered palladacycle. Like other cyclopalladated complexes containing a five-membered palladacycle, [PdClL]2 reacts with pyridine (py) to form adducts [PdClL(py)]. [Pd(acac)L] and [Pd(dtc)L] were also prepared and characterized (acac=acetylacetonate and dtc =N,Ndimethyldithiocarbamate ion).
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00618716
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  • 7
    Digitale Medien
    Digitale Medien
    Cyclopalladation of hydrazone derivatives of 1-acetylcyclohexene (1983)
    Springer
    Transition metal chemistry 8 (1983), S. 121-124 
    Details
    ISSN: 1572-901X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Summary Cyclopalladated 1-acetylcyclohexene acetylhydrazone, methoxycarbonylhydrazone, and semicarbazone, (Y=CH3, OCH3, or NH2, respectively) were prepared and characterized spectroscopically. The NHCOY substituents are not coordinated to the palladium(II) and the 1-substituted cyclohexene ring is palladated at C-2 with replacement of the olefinic hydrogen by palladium. This cyclopalladation contrasts with the previously reported cyclopalladation ofN,N-dimethylallylamine and 2-vinylpyridine, during which a methoxypalladium group adds across the double bonds ofN,N-dimethylallylamine and 2-vinylpyridine resulting in transformation of the double bonds into single bonds.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01036096
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  • 8
    Digitale Medien
    Digitale Medien
    Cobalt(III), nickel(II), and copper(II) complexes of 1-thia (or oxa)4,7-diazacyclononane and related mixed-ligand cobalt(III) complexes (1984)
    Springer
    Transition metal chemistry 9 (1984), S. 367-371 
    Details
    ISSN: 1572-901X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Summary To investigate the effect of substitution of an oxygen or a sulphur donor atom for a nitrogen donor atom in a cyclic triamine, 1,4,7-triazacyclononane (tacn), cobalt(III), nickel(II), and copper(II) complexes of 1-oxa-4,7-diazacyclononane (taon) and 1-thia-4,7-diazacyclononane (tasn), and related mixed ligand cobalt(III) complexes were prepared and characterized. The coordination ability of an ether-oxygen or a thioether-sulphur atom increases when these atoms are incorporated into cyclic terdentate ligands. Electronic spectra reveal that ligand field strengths of these atoms are enhanced significantly. The presence of these heteroatoms affects circular dichroism spectra because of the increased flexibility of the chelate rings.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00637020
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  • 9
    Digitale Medien
    Digitale Medien
    Palladium(II), platinum(II), rhodium(III) and iridium(III) complexes coordinated with 2-aryl-4,5-dimethyl-1,2,3-triazoles as bidentate nitrogen-carbon chelate ligands (1978)
    Springer
    Transition metal chemistry 3 (1978), S. 366-369 
    Details
    ISSN: 1572-901X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Summary Cyclometallations of 2-aryl-4,5-dimethyl-1,2,3-triazoles [H(C-N)] occur with palladium(II), platinum(II), rhodium(III) and iridium(III) chloride. Pallaciation and platination form [MCI(C-N)]2, and rhodation and iridation [MCI(C-N)2]2 species. These complexes react with monodentate ligands, L, such as pyridine and tri-n-butylphosphine to give MCl(C-N)L and MCl(C-N)2 L complexes. Corresponding bromo and iodo complexes are prepared by metathesis with lithium bromide and iodide. Spectroscopic data suggest that MX(C-N)L compounds (X = Cl, Br or I) have a structure withtrans-C,X andtrans-N,L, while [MX(C-N)2 L] has atrans-N,N,cis-C,C, andcis-X,L structure.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01393593
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  • 10
    Digitale Medien
    Digitale Medien
    Synthesis of organo-platinum(II) and -palladium(II) complexes ofN-phenyl- andN-(p-Tolyl)pyrazole (1975)
    Springer
    Transition metal chemistry 1 (1975), S. 10-13 
    Details
    ISSN: 1572-901X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Summary When platinum(II) chloride dissolved in acetic acid containing concentrated hydrochloric acid was refluxed withN-phenylpyrazole(liphpz) andN-(p-tolyl)pyrazole (Htlpz), complexes of composition [Pt(N-C)Cl]2 (N-C = phpz, tlpz) were obtained, in which phpz and tlpz are coordinated through nitrogen and carbon forming a five membered metallocycle. Similar palladium(II) complexes [Pd(N-C)Cl]2 were easily prepared by the reaction of palladium(II) chloride with Hphpz and Htlpz in methanol in the presence of lithium chloride. These [M(N-C)CI]2 complexes reacted with tri-n-butylphosphine (PBu3) and pyridine (py) to give the adducts [M(N-C)ClL](L = PBu3, py). Ethylenediamine(en) and acetylacetone(Hacac) gave IPd(phpz)(en)]Cl and [Pd(phpz)(acac)] respectively. These new complexes are characterized by means of1H-n.m.r. and i.r. spectra, and probable structures are proposed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01753073
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