Effects of temperature on the crystal and molecular structure of the mixed-valence linear chain bis(ethylenediamine)platinum bis(ethylenediamine)dihaloplatinum tetraperchlorate (halo = chloro, bromo)

1993 ◽  
Vol 32 (10) ◽  
pp. 2137-2144 ◽  
Author(s):  
Sara C. Huckett ◽  
Brian Scott ◽  
Steven P. Love ◽  
Robert J. Donohoe ◽  
Carol J. Burns ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Crystal And Molecular Structure ◽  
Linear Chain ◽  
Mixed Valence ◽  
Effects Of Temperature

Crystal and Molecular Structure of a New Linear Chain Compound: Bis(diphenylglyoximato)platinum(III)perchlorate

1978 ◽  
Vol 33 (8) ◽  
pp. 843-848 ◽  
Author(s):  
H. Endres ◽  
H. J. Keller ◽  
H. van de Sand ◽  
Vu Dong
Keyword(s):  
Molecular Structure ◽  
Crystal And Molecular Structure ◽  
Linear Chain ◽  
Formula Unit ◽  
Humid Atmosphere ◽  
Space Group ◽  
Group D ◽  
Chain Compound

Abstract The reaction of bis(diphenylglyoximato)platinum(IV) diiodide with AgClO4 in benzene yields red brown needles of the compound bis(diphenylglyoximato)platinum(III) perchlorate (A) and crystals of bis(diphenylglyoximato)platinum(III) perchlorate which contains additionally between one and one and a half moles of benzene per formula unit (B). Both compounds are highly hygroscopic and instantaneously change their color to black-green in a humid atmosphere. Crystals of A are tetragonal, a = 20.325(2), c - 6.519(4) Å, space group D84h-P4/ncc, Z = 4. The structure consists of stacks of [Pt(dpg)2]+ cations with equidistant Pt-Pt separations of 3.259(4) Å. The Perchlorate ions are disordered in channels formed by the cation columns. Crystals of B are triclinic, a = 14.29(3), b = 13.54(2), c -10.34(3) Å, a = 85.2(2), β = 113.2(2), γ = 93.9(2)°.

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 of 9-(2,4,6-trinitroanilino)-carbazole, C18H11N5O6

1987 ◽  
Vol 65 (6) ◽  
pp. 1322-1326 ◽  
Author(s):  
Hong Wang ◽  
Richard J. Barton ◽  
Beverly E. Robertson ◽  
John A. Weil ◽  
Keith C. Brown
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Crystal And Molecular Structure ◽  
Linear Chain ◽  
Monoclinic Space Group ◽  
X Ray Diffraction ◽  
X Ray ◽  
Adjacent Molecule ◽  
Neighboring Molecule ◽  
Infinite Linear

The crystal structure of 9-(2,4,6-trinitroanilino)-carbazole, C18H11N5O6, has been determined by X-ray diffraction. Crystals are monoclinic, space group P21/c, a = 14.686(11), b = 24.601(12), c = 10.047(5) Å, β = 107.76(5)° at 292 K, with Z = 8. The two nitrogen atoms in the central fragment have a staggered conformation with an N—N distance of 1.381(4) Å, which is considerably shorter than N—N distances in related N-picrylhydrazine molecules. The picryl moiety has a geometry similar to that of related N-picrylhydrazine molecules. The title compound contains an [Formula: see text] intramolecular bond to one of the ortho nitro groups on the picryl ring. The carbazole plane of one molecule and the picryl plane of a neighboring molecule overlap to form an infinite linear chain of the form … DhA:DhA … where D represents the carbazole donor, h the linear chain linkage within the molecule, and A represents the picryl acceptor of one molecule. The two interplanar distances between D of one molecule and A of an adjacent molecule are 3.28(13) and 3.34(13) Å, indicating a strong π-molecular interaction.

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