Crystal and molecular structure and properties of the first characterized copper(II) one-dimensional polymer containing mepirizole [4-methoxy-2-(5-methoxy-3-methyl-1H-pyrazol-1-yl)-6-methylpyrimidine]

1991 ◽  
pp. 1057-1061 ◽  
Author(s):  
Matilde Benetó ◽  
Lucia Soto ◽  
Julia García-Lozano ◽  
Emilio Escrivá ◽  
Jean-Pierre Legros ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Crystal And Molecular Structure ◽  
Structure And Properties ◽  
One Dimensional

Crystal and Molecular Structure of the Linear Chain Bis(1,2-diaminopropane)platinum(II,IV)tribromide

1980 ◽  
Vol 35 (10) ◽  
pp. 1274-1276 ◽  
Author(s):  
H. Endres ◽  
H. J. Keller ◽  
R. Martin ◽  
S. Nötzel
Keyword(s):  
Molecular Structure ◽  
Crystal And Molecular Structure ◽  
Linear Chain ◽  
One Dimensional ◽  
Diffuse Layers

Abstract [Pt(dapn)2]Br3 (dapn = 1,2-diaminopropane), ortho-rhombic, Immm (D252h), a = 5.338(1), b = 6.900(5), c= 19.738(4) Å, Z = 2, V= 727 Å3 , dc = 2.7 g · cm-3 . The structure was refined to R = 0.094 for 576 reflections and can be described as a Wolffram's salt analogue. A rotating crystal photograph shows weak diffuse layers between the Bragg reflections as evidence for one-dimensional order along the M-X-M chain, but for successful refinement the M-X distance (2.673(1) Å) have to be assumed to be equal.

Crystal and Molecular Structure and Properties of Tetrasodium[Bis { (µ-isothiocyanato-N,S)(N-salicylidene-β-alaninato) } dicuprate(II)] Dithiocyanate Tetrahydrate

1992 ◽  
Vol 47 (11) ◽  
pp. 1565-1570 ◽  
Author(s):  
V. Kettmann ◽  
J. Krätsmár-Šmogrovič ◽  
O. Švajlenová ◽  
M. Žemlička
Keyword(s):  
Molecular Structure ◽  
Binuclear Complex ◽  
Complex Anion ◽  
Crystal And Molecular Structure ◽  
Structure And Properties ◽  
Epr Spectrum ◽  
Triclinic Space Group ◽  
Coordination Environment ◽  
Cell Dimensions ◽  
Na Ions

The binuclear antiferromagnetically superexchange-coupled aquabis(N-salicylidene-β-alaninato)dicopper(II) monohydrate reacts with NaSCN to yield a complex cuprate(II) of stoichiometry Na2Cu(sal-β-ala)(NCS)2 · 2 H2O. The compound has a magnetic moment μ/eff = 1.85. μΒ (Τ = 295 K), and an axial EPR spectrum with g11 > g⊥.The crystal and molecular structure of the title compound has been determined and refined to R = 0.055 (Rw = 0.062) for 1535 observed reflections, [I > 2σ(I)]. The crystals are triclinic, space group P1̅, with cell dimensions: a = 6.989(3), b = 10.445(5), c = 12.692(6)Å; α = 84.88(5), β = 70.13(4), and γ = 86.72(6)°, V = 869 Å3; Z = 2. The coordination environment of the Cu(II) atom is axially distorted square pyramidal (4 + 1). The basal plane of the pyramid is formed by the 01, Ν 1, and O 2 donor atoms of the tridentate sal-β-ala(2—) Schiff base ligand and by the N 2 atom of the additional NCS(1—) ligand. The apex of the pyramid is occupied by the weakly contacting S l′ atom of the bridging —NCS— ligand, Cu—S 1′ = 2.933(2) Å, thereby giving rise to [Cu2(sal-β-ala)2(μ-NCS)2]2- centrosymmetric binuclear complex anion. The remaining components of the crystal structure are SCN- (uncoordinated to Cu2+), Na+ ions, and H2O molecules.

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