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'Macrocyclic Ligands' in keywords
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1Author    MarcoH. Klingele, Gunther Steinfeld, Berthold KerstingRequires cookie*
 Title    Synthesis and Coordination Chemistry of Novel Binucleating Macrocyclic Ligands with Amine-thioether and Amine-thiophenolate Donor Functions  
 Abstract    The ability of the aromatic tetraaldehyde l,2-bis(4-rm-butyl-2,6-diformylphenylsulfanyl)-ethane (1) to function as a precursor in the preparation of binucleating hexaamine-dithiolate lig­ ands has been investigated. Reductive amination of compound 1 with bis(aminoethyl)amine un­ der medium-dilution conditions affords the macrobicyclic hexaamine-dithioether compound L 1. Deprotection of the [1+2] condensation product gives the corresponding 24-membered hexa-amine-dithiophenol ligand H2L2. The formulation of L 1 as a macrobicyclic amine-thioether was confirmed by an X-ray crystal structure determination of the tetranuclear nickel(II) complex of L 1, [{ (L jN iiC lili^ -C l^K B P h ;) (2b). The formulation of the doubly deprotonated form (L2)2-of H2L2 as a 24-membered amine-thiophenolate ligand was confirmed by an X-ray crystal structure determination of the dinuclear cobalt(III) complex, [(L2)Com(^-OH)](C1 0 4) 2 • Cl (3). The preparation and the crystal structures of the new compounds are described. 
  Reference    Z. Naturforsch. 56b, 901—907 (2001); received June 5 2001 
  Published    2001 
  Keywords    Macrocyclic Ligands, Nitrogen, Sulfur 
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 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-0901.pdf 
 Identifier    ZNB-2001-56b-0901 
 Volume    56 
2Author    Klaus Wasielewski, Rainer MattesRequires cookie*
 Title    Crystal Structure of [CuiCu2ii(CN)4('N 2S')2]SCN ('N 2S' = l-Thia-4,7-diazacyclononane)  
  Reference    Z. Naturforsch. 47b, 1795—1797 (1992); eingegangen am 28. Juli 1992 
  Published    1992 
  Keywords    Copper Complexes, Macrocyclic Ligands, Crystal Structure 
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 TEI-XML for    default:Reihe_B/47/ZNB-1992-47b-1795_n.pdf 
 Identifier    ZNB-1992-47b-1795_n 
 Volume    47 
3Author    IrisM. Müller, WilliamS. SheldrickRequires cookie*
 Title    CuX (X = Br, I) Oligomers and Polymerie Chains in Tetramethylcyclotetra- arsoxane-Bridged Networks [Cu/iX/Jcjc/o-CCH^AsO)^] (n = 4, 6, 8)  
 Abstract    Open lamellar structures 2 [Cu-jLjcyc/o-tCH iA sO ^}?] (1) and 2 [{CuX(CuX • C H 3CN)2}{c>'c/o-(CH3 AsO)4}] [X = Br (2), X = 1 (3)] may be prepared by self-assembly from CuX and methylcycloarsoxane (CH3AsO)" in acetonitrile solution at 100-130 °C. W hereas 1 contains CU4I4 oligomers consisting of three fused (C ul)2 rings, 2 and 3 exhibit infinite J. [CuX] single chains. An acceleration in the rate of heating between 20 
  Reference    Z. Naturforsch. 52b, 951—957 (1997); received June 6 1997 
  Published    1997 
  Keywords    Copper(I) Halides, Macrocyclic Ligands, Methylcycloarsoxane, Layered Compounds 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0951.pdf 
 Identifier    ZNB-1997-52b-0951 
 Volume    52 
4Author    Berthold KerstingRequires cookie*
 Title    Synthesis and Structure of a Tetranuclear Nickel Complex of a 40-Membered Macrocyclic Octaamine-Tetrathiophenolate Ligand  
 Abstract    The syntheses and characterization of tetranuclear Ni complexes [(L2)Ni4][C104]4 (3) and [(L2)Ni4(NCS)4] (4) of a 40-membered macrocyclic octaamine-tetrathiophenolate ligand (L2)4-are described. Single-crystal X-ray structure analysis of 4 reveals well-separated molecules of the tetranuclear isothiocyanate complex [(L2) N i 4(NCS)4]. The four Ni" centers are arranged in binuclear [N2N i(^ 2-SR)2N iN 2(NCS)2] subunits containing distorted square-planar NiN 2S2 and distorted octahedral NiN 2S2(NCS)2 sites. The fact that the two isothiocyanate groups at the octahedral Ni site are in trans positions can be ascribed to the large ring size of the macrocycle. 
  Reference    Z. Naturforsch. 55b, 961—965 (2000); received July 7 2000 
  Published    2000 
  Keywords    Macrocyclic Ligands, Thiolate Ligand, Polynuclear Complexes 
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 TEI-XML for    default:Reihe_B/55/ZNB-2000-55b-0961.pdf 
 Identifier    ZNB-2000-55b-0961 
 Volume    55 
5Author    H. Schumann, B. Neumann, H.-G StammlerRequires cookie*
 Title    Spektroskopische und strukturelle Aspekte der Protonierung von Tetraaza[14]annulen-Dianionen Spectroscopic and Structural Aspects of the Protonation of Tetraaza[14]annulene Dianions  
 Abstract    The effects of increasing protonation upon two [ 14]annulene dianions prepared by reaction of LiCH3 with 5,14-dihydro-6,8,15,17-tetram ethyldibenzo[b,i][l,4,8,l l]tetraazacyclotetradecine 
  Reference    Z. Naturforsch. 51b, 1255—1266 (1996); eingegangen am 8. Februar 1996 
  Published    1996 
  Keywords    Nickel Complexes, Macrocyclic Ligands, Protonation, 7r-Conjugation, X-Ray 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-1255.pdf 
 Identifier    ZNB-1996-51b-1255 
 Volume    51