Crystal and molecular structure of the 2,4,7-trinitrofluorenone-hexamethylbenzene charge-transfer complex

1974 ◽  
Vol 4 (6) ◽  
pp. 361-371 ◽  
Author(s):  
J. N. Brown ◽  
L. D. Cheung ◽  
L. M. Trefonas ◽  
R. J. Majeste
Keyword(s):  
Molecular Structure ◽  
Charge Transfer ◽  
Charge Transfer Complex ◽  
Crystal And Molecular Structure

The Crystal and Molecular Structure of Charge-Transfer Complex of Azo Dyestuff 5-(4-Chloro-2-nitrophenyl)-azo-6-hydroxy-1-ethyl-3-cyano-4-methyl-2-pyridone with Naphthalene

1993 ◽  
Vol 58 (9) ◽  
pp. 2121-2127 ◽  
Author(s):  
Josef Přikryl ◽  
Bohumil Kratochvíl ◽  
Jan Ondráček ◽  
Jaroslav Maixner ◽  
Jiří Klicnar ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Charge Transfer ◽  
Pyridine Ring ◽  
Charge Transfer Complex ◽  
Crystal And Molecular Structure ◽  
Crystal Packing ◽  
Direct Methods ◽  
Van Der Waals Forces ◽  
Triclinic Space Group ◽  
Π Stacking Interaction

The title charge-transfer complex crystallizes in the ratio of two molecules of azo dyestuff to one molecule of naphthalene. The crystals are triclinic, space group P1, lattice parameters a = 7.953(1), b = 11.608(2), c = 11.717(2) Å, α = 101.89(2), β = 94.27(2), γ = 109.91(2)°, Z = 2. The structure was solved by direct methods and refined anisotropically to R = 0.054 for 1 768 unique observed reflections. Crystal packing is stabilized by van der Waals forces and partly by π-π stacking interaction among naphthalene, phenyl and pyridine ring of pyridon azo dyestuff.

Interaction of diiodine with Et4todit = 4,5,6,7-tetrathiocino [1,2-b:3,4-b′]diimidazolyl-1,3,8,10-tetraethyl-2,9-dithione. Crystal and molecular structure of Et4todit•2I2

1989 ◽  
Vol 67 (9) ◽  
pp. 1416-1420 ◽  
Author(s):  
Davide Atzei ◽  
Paola Deplano ◽  
Emanuele F. Trogu ◽  
Francesco Bigoli ◽  
Maria Angela Pellinghelli ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Charge Transfer ◽  
Charge Transfer Complex ◽  
Crystal And Molecular Structure ◽  
Equilibrium Constants ◽  
Structural Data ◽  
Monoclinic Space Group ◽  
X Ray ◽  
Transfer Structure ◽  
General Computer Program

Spectrophotometric studies on the reaction between diiodine and the title ligand in ratios ranging from 1:1 to 1:20 in CHCl3 have shown the formation of a 1:1 charge-transfer complex. A general computer program has been used to refine the equilibrium constant and the extinction coefficients simultaneously. In the solid state a 1:2 (donor to acceptor) complex has been isolated and an X-ray structure analysis of the compound indicated that the crystals are monoclinic, space group C2/c with a = 16.317(4), b = 13.912(3), c = 12.879(3) Å, β = 111.24(2)°, Z = 4.The molecular structure shows that two sulphur-thioamide atoms of the ligand act as donor with respect to two diiodine molecules. The structural data of the organic molecule of the complex and those of the free molecule are very similar. Keywords: diiodine, thioamides, charge-transfer, structure, equilibrium-constants.

Crystal and molecular structure of 2,3-dimethylnaph-thazarin: A charge-transfer complex

1984 ◽  
Vol 112 (1-2) ◽  
pp. 101-109 ◽  
Author(s):  
J.G. Rodríguez ◽  
P. Smith-Verdier ◽  
F. Florencio ◽  
S. García-Blanco
Keyword(s):  
Molecular Structure ◽  
Charge Transfer ◽  
Charge Transfer Complex ◽  
Crystal And Molecular Structure ◽  
A Charge
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