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2001 (1)
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1Author    T. Kromp, W. S. SheldrickRequires cookie*
 Title    One-and Two-Dimensional Copper(I) Halide Based Coordination Polymers with Bridging Pyridazine or Pyrimidine Ligands  
 Abstract    1-Dimensional coordination polymers J. [CuX(/i-pydz)] 1 -3 (X = Cl, Br, I; pydz = pyrid­ azine) may be prepared by self-assembly in acetonitrile solution at 120 °C (1) or room temper­ ature (2, 3). Individual chains contain (CuX)2 rings and dimeric [Cu(^-pydz)]2 substructures. At a 2:1 molar ratio treatment of Cul with pydz in acetonitrile affords the lamellar complex ^ [(Cul)2(/i-pydz)] (4) whose novel ^ [(Cul)2] sheets contain fused 4-, 6-and 8-membered (Cul)" rings and are stabilized by pydz bridging between adjacent Cu atoms. In contrast, l_ [(CuBr)2(/i-pym)2] (5) (pym = pyrimidine) contains separated J. [CuBr] chains and (CuBr)2 rings as participating building units. 
  Reference    Z. Naturforsch. 54b, 1175—1180 (1999); received June 9 1999 
  Published    1999 
  Keywords    Copper(I) Halides, Pyridazine, Pyrimidine, Coordination Polymers 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-1175.pdf 
 Identifier    ZNB-1999-54b-1175 
 Volume    54 
2Author    Chnstian Näther, Inke Jeß, Harald StudzinskiRequires cookie*
 Title    Investigations on the Thermal Decomposition of Coordination Polymers Based on Copper(I) Halides and 2-Methylpyrazine  
 Abstract    The thermal behaviour of the three coordination polymers < 2..poly[CuX(/u-2-methylpyrazine-N,N')] (X = Cl (I), Br (II)), and ^poly[{C u2l2 (i M-pyrazine-N,N')2 } • 2-methylpyrazine] (III) was investigated using differential thermal analysis and thermogravimetry (DTA-TG) measure­ ments as well as temperature resolved X-ray powder diffraction in argon and in air. On heating all compounds decompose in two steps. In the first step compound I and II loose one and com­ pound III looses two of the 2-methylpyrazine ligands to form the corresponding 2:1 compounds Cu2Cl2 (2 -methylpyrazine) (IV) and c|,poly[Cu2X2 (//-2 -methylpyrazine-N,N')] (X = Br (V), I (VI)). From the experiments there is no evidence for the formation of a 1:1 compound of Cul and 2-methylpyrazine as an intermediate phase during the thermal decomposition. On further heating the 2:1 compounds IV, V and VI transform directly to the corresponding copper(I) halides. In tro d u ctio n 
  Reference    Z. Naturforsch. 56b, 997—1002 (2001); received June 8 2001 
  Published    2001 
  Keywords    Copper(I) Halides, 2-Methylpyrazine, Coordination Polymers 
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 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-0997.pdf 
 Identifier    ZNB-2001-56b-0997 
 Volume    56 
3Author    RolfW. Saalfrank3, Oliver Struck3, Karl Petersb, HansG. Eorg, Von SchneringbRequires cookie*
 Title    Synthese und Struktur diastereomerer, zweikerniger Kupferkomplexe [1] Synthesis and Structure of Diastereomerie Dinuelear C opper Complexes [1]  
 Abstract    Depolym erisation of a copper(II)/pyrrolidine-based 2D -polym er 2 by 4.4'-bipyridyl [molar ratio: 2 (C u L 2) : l (Bipy)] and recrystallisation o f the reaction product leads to two visually distinguishable crystal charges, composed of dark green octahedra m eso-4 and light green rod-shaped crystals racem-5. Separation of the conglom erate of the morphologically different crystals is accomplished by pick out. The structure of the dinuelear complex racem-5 has been established unambigously by X-ray structure analysis. EPR and susceptibility measure­ ments of mixtures of complex meso-4 and racem-S indicate that there is no interaction be­ tween the two copper(II) centres. 
  Reference    Z. Naturforsch. 49b, 1410—1414 (1994); eingegangen am 17. März 1994 
  Published    1994 
  Keywords    Coordination Polymers, Depolymerisation, Dinuelear Copper Complexes, Diastereomers, X-Ray 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-1410.pdf 
 Identifier    ZNB-1994-49b-1410 
 Volume    49 
4Author    B. Roßenbeck, W. S. SheldrickRequires cookie*
 Title    Three-dimensional Copper(I) Halide Based Coordination Networks with Asymmetrically Substituted Bridging N-Donor Ligands  
 Abstract    The discrete complex [(Cul)2 (pyzCN)4] (1) and the coordination polymers ^ [CuI(pyzCN)] (2) and 3 [(CuX)3 (pyzCN)2] (3, 4; X = Br, Cl) may be prepared from the respective copper(I) halide CuX and 2-cyanopyrazine (pyzCN) by self-assembly in acetonitrile solution at 100-120°C. Whereas 2 exhibits 1 [Cul] staircase double chains as its characteristic substructure, the three-dimensional netwo'rks of 3 and 4 contain single zigzag CuX strings. The influence of the copper(I) halide on both the connectivity pattern and the dimensionality of a resulting coordination network is particularly apparent for the 1:1 complexes ^ [CuI(pymMe)] (5), 3 [(CuBr)3(pymMe)_3] (6) and ^ [CuCl(pymMe)] (7), which were generated by reaction of öaX with 4-methylpyrimidine (pymMe) under reaction conditions similar to those above. 
  Reference    Z. Naturforsch. 54b, 1510—1516 (1999); received August 27 1999 
  Published    1999 
  Keywords    Copper (I) Halides, Coordination Polymers, Crystal Engineering, Pyrazine, Pyrimidine 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-1510.pdf 
 Identifier    ZNB-1999-54b-1510 
 Volume    54