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1Author    Uwe Hartmann, Heinrich VahrenkampRequires cookie*
 Title    Zinkkomplexe von Sulfonamiden Zinc Complexes of Sulfonamides  
 Abstract    The diuretic sulfonamides furosemid (FLFur) and hydrochlorothiazid (H 2Hyt) were used as ligands in zinc complexes. Spectroscopic data indicate that in [(H Fur)Z n(H 2 0)2 ]C1 0 4 and (H Fur)2Zn the furosemid ligand is bound to zinc via its carboxylate and amine functions while (Fur)Z n(N H 3)2 is a coordination polymer with Zn-carboxylate and Zn-sulfonimide coordination. A structure determination shows (H yt)Zn(N H 3)2 to be a coordination polymer as well, with both deprotonated sulfonamide functions forming Z n -N bonds. 
  Reference    Z. Naturforsch. 49b, 1725—1730 (1994); eingegangen am 11. Mai 1994 
  Published    1994 
  Keywords    Zinc Complexes, Sulfonamide Ligands, Structure 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-1725.pdf 
 Identifier    ZNB-1994-49b-1725 
 Volume    49 
2Author    Joachim Pickardt, B. Ritta KühnRequires cookie*
 Title    Metallkomplexe mit Guanidinderivaten als Liganden  
 Abstract    Kristallstrukturen von [Zn(cnge)2(SCN)2] 2H20 und Zn(eoge)Br2 (enge = Cyanoguanidin; eoge = 1-Ethoxyiminomethylguanidin) M etal C om plexes with G uanidine D erivatives as Ligands: Crystal Structures o f [Zn(cnge)2(SC N)2]-2H20 und Z n(eoge)B r2 (cnge = C yanoguanidine; eoge = 1-Ethoxyim inom ethylguanidine) Crystals of |Zn(cnge)2(SCN)2]-2H20 (1) were obtained by evaporation of an aqueous solution 
  Reference    Z. Naturforsch. 51b, 1469—1472 (1996); eingegangen am 3. April 1996 
  Published    1996 
  Keywords    Cyanoguanidine, Zinc Complexes, Crystal Structures 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-1469.pdf 
 Identifier    ZNB-1996-51b-1469 
 Volume    51 
3Author    Alfonso Castiñeiras3, Isabel Garcia3, Elena Bermejo3, DouglasX. WestbRequires cookie*
 Title    Structural and Spectral Studies of 2-Pyridineformamide Thiosemicarbazone and its Complexes Prepared with Zinc Halides  
 Abstract    Reduction of 2-cyanopyridine by sodium in dry methanol in presence of thiosemicar-bazide produces 2-pyridineformamide thiosemicarbazone, HAm4DH. The crystal structure of HAm4DH, which has a number of intermolecular interactions involving its five NH hydrogen atoms, has been solved. Crystal structures of the complexes prepared by reaction of HAm4DH with zinc(II) chloride, bromide and iodide have also been obtained. Neutral HAm4DH is co­ ordinated via the pyridyl nitrogen, imine nitrogen and thione sulfur atoms, and each complex is five-coordinate with two halogen ligands. The structures of the three complexes are best described as square pyramidal with [Zn(HAm4DH)l2] having the largest distortion toward a trigonal bipyramid. 
  Reference    Z. Naturforsch. 55b, 511—518 (2000); received February 4 2000 
  Published    2000 
  Keywords    2-Pyridineformamide, Thiosemicarbazone, Zinc Complexes 
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 TEI-XML for    default:Reihe_B/55/ZNB-2000-55b-0511.pdf 
 Identifier    ZNB-2000-55b-0511 
 Volume    55 
4Author    JoachimW. Irbser, Heinrich VahrenkampRequires cookie*
 Title    Zinkkomplexe kettenförmiger N3-Chelatliganden Zinc Complexes of Chain-Like N 3 Chelate Ligands  
 Abstract    The title ligands bis[(2-pyridyl)methyl]amine (BPA) and bis[(2-benzimidazolyl)methyl]-methylamine (BBM A) were used to prepare complexes with zinc salts. 1:1 complexes o f BPA with ZnCl2, ZnBr2, Z n l2, Z n(SC N)2, Z n(C H 3COO)2, and Z n (N 0 3)2 as well as o f BBMA with ZnCl2, ZnBr2, and Z n (N 0 3)2 were obtained. Spectroscopic evidence indicates that all these complexes are five-coordinate molecular LZnX , units. With Zn(C104)2, BPA forms a 2:1 com ­ plex presumed to be an octahedral ionic L2Z nX 2 species. The crystal structures o f B P A Z n C L and BBMA ■ ZnBr-, reveal distorted square pyramidal resp. trigonal bipyramidal molecular ge­ ometries. 
  Reference    Z. Naturforsch. 47b, 962 (1992); eingegangen am 30. Dezember 1991 
  Published    1992 
  Keywords    Zinc Complexes, Tridentate Ligands, Preparation, Structure Determination 
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 TEI-XML for    default:Reihe_B/47/ZNB-1992-47b-0962.pdf 
 Identifier    ZNB-1992-47b-0962 
 Volume    47 
5Author    Ulrich Behrens3, ReinhardH. Oppenheitb+, Wilhelm Isenbergb, Enno Lorka, Jan Petersen3, Rüdiger MewsRequires cookie*
 Title    Thiazyltrifluorid-Komplexe von Mg und Zn Thiazyltrifluoride Complexes of Mg and Zn  
 Abstract    The preparations of [Mg(NSF3)4](AsF6)2 (2a) and [Zn(NSF3)4](AsF6)2 (2b) are reported. The structure of 2 b was determined by X-ray diffraction. The ligand properties of NSF3 are discussed. 
  Reference    Z. Naturforsch. 49b, 238—242 (1994); eingegangen am 11. Oktober 1993 
  Published    1994 
  Keywords    Thiazyltrifluoride, X-Ray, Magnesium Complexes, Zinc Complexes 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-0238.pdf 
 Identifier    ZNB-1994-49b-0238 
 Volume    49 
6Author    R. Castro, M.L D Urá, J.A G Arcía-Vázquez, J. Rom, A. Sousa, A. C. Astiñeiras, W. Hiller, J. SträhleRequires cookie*
 Title    Direct Electrochemical Synthesis of Pyrimidine-2-thionato Complexes of Zinc(II) and Cadmium(II): The Crystal Structure of (l,10-Phenanthroline)bis(pyrimidine-2-thionato)cadmium(II)  
 Abstract    Zn(pymt)2 and Cd(pymt)2 complexes have been obtained by electrochemical oxidation o f anodic zinc or cadmium in acetonitrile solutions o f pyrimidine-2-thione (Hpymt). W hen 2,2'-bipyridine (bipy) or 1,10-phenanthroline (phen) was added to the electrochemical cell, the ad-ducts [M (pymt)2(bipy)], or [M(pymt)2(phen)] (M = Zn or Cd) were obtained. Crystals o f [Cd(pymt)2phen] are orthorhombic, with a = 9.882(2), b = 12.491(1), c = 16.513(2)A, space group P 2,2,2, and Z = 4. The cadmium atom has distorted octahedral geometry, and one ni­ trogen atom o f each pyrimidine-2-thiolato ligand is not coordinated. 
  Reference    Z. Naturforsch. 47b, 1067 (1992); received January 27 1992 
  Published    1992 
  Keywords    X -Ray, Cadmium Complexes, Pyrimidine-2-thione, Zinc Complexes 
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 TEI-XML for    default:Reihe_B/47/ZNB-1992-47b-1067.pdf 
 Identifier    ZNB-1992-47b-1067 
 Volume    47 
7Author    Z. NaturforschRequires cookie*
 Title    Heterometallische  
 Abstract    Mehrkernkomplexe von Zink und Cadmium mit ds-[C r(O H)2(en)2]+-Liganden H eterom etallic Polynuclear Com plexes of Zinc and Cadm ium with c/s-[C r(O H)2 (en)2]+ Ligands Frank R om inger, U lf Thew alt* A series of polynuclear heterometallic complexes containing chromium and zinc or cadmium were prepared by the reaction of c/s-[CrCl2(en)2]Cl and a zinc or cadmium salt in water and the molecular and crystal structures of 1 to 5 determined by X-ray structure analyses. The products contain chelating or bridging c7s-[Cr(OH)2(en)2]+ groups. For the zinc complexes a tetrahedral coordination is observed, and the [Cr(OH)2(en)2]+ units are found to act as bridges. |[Z nC l2(//-0H)C r(en)2(/u-0H)]C104]" (1) has a chain polymeric structure. [{ZnCl2(y'/-OH)Cr(en)2(//-0 H)} 2]C12 (2) has a cyclic structure. In the case of the cadmium complexes the [Cr(OH)2(en)2]+ units act as chelating ligands. For the three cadmium complexes [Cd3(/./.-Cl)4Cl4{Cr(/^3-OH)( 
  Reference    Z. Naturforsch. 51b, 1716—1724 (1996); eingegangen am 16. Juli 1996 
  Published    1996 
  Keywords    Zinc Complexes, Cadmium Complexes, Chromium Complexes, Hydroxo Bridge, Heterome­ tallic Compounds 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-1716.pdf 
 Identifier    ZNB-1996-51b-1716 
 Volume    51 
8Author    Dana Weiß, Annette Schier, Hubert SchmidbaurRequires cookie*
 Title    2-Diphenylphosphino-phenoI as a Ligand for Mono-and Poly-Nuclear Complexes of Manganese, Cobalt, Nickel, Zinc, and Cadmium  
 Abstract    2-Diphenylphosphino-phenol was chosen as an ambivalent (hard/soft) chelating ligand for biologically important first row transition metals. The expected mode of complexation is relevant to trapping of metal ions in humic acids and related environmental ion exchange systems with phenolate functions. The 1:2 complex with nickel(II) is known to have a standard mononuclear square-planar structure, and experimental evidence suggests that the new cobalt(II) complex is analogous. By contrast, zinc and cadmium were found to give novel trinulear complexes [M3(2-Ph2P-C6H4 0)6], M = Zn, Cd. In a chain of three metal atoms, the octahedrally coordinated central atom resides on a center of inversion and is solely oxygen-bound [MOö], while the two peripheral metal atoms are in a mixed coordination environment [fac-M 03P3], The analogous manganese(II) complex crystallizes as a net trihydrate, where two different trinuclear units are present in the lattice. One is of a new type and represents a centrosymmetrical hexahydrate [Mn3(2 -Ph2P-C6H4 0)6(0 H2)6]. The central part is an octahedral [Mn(OH2)6]2+ dication, which is hydrogen-bonded to two [Mn(2 -Ph2P-C6H4 0)3]~ anions. The nickel(II) complex was found to form 1:1 adducts with ZnCl2 or ZnBr2. The two complexes are isomorphous. In the adduct structure the zinc atom is attached to the two oxygen atoms of the nickel compound leaving the remainder of the molecular geometry largely unchanged. Together with the two halogen atoms a tetrahedral environment [Zn02X 2] is formed (X = Cl, Br), while the nickel atom retains its square planar [N i0 2P2] environment. 
  Reference    Z. Naturforsch. 53b, 1307—1312 (1998); received August 12 1998 
  Published    1998 
  Keywords    Phosphino-phenolate Ligands, Phenolate Ligands, Zinc Complex, Manganese Complex, Nickel Complex 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-1307.pdf 
 Identifier    ZNB-1998-53b-1307 
 Volume    53