Refinement of the crystal and molecular structure of 1,2,4-triazole (C2H3N3) at low temperature

1969 ◽  
Vol 25 (1) ◽  
pp. 135-143 ◽  
Author(s):  
P. Goldstein ◽  
J. Ladell ◽  
G. Abowitz
1978 ◽  
Vol 33 (12) ◽  
pp. 1554-1555 ◽  
Author(s):  
Jürgen Steidel ◽  
Joachim Pickardt ◽  
Ralf Steudel

A low temperature (-90 °C) X-ray structural analysis of S6 single crystals yielded improved data for the bond distances (206.8 pm), bond angles (102.6°), and torsion angles (73.8°) of the D3d molecule which are in agreement with current theories of homonuclear sulfur bonds.


1976 ◽  
Vol 98 (18) ◽  
pp. 5489-5492 ◽  
Author(s):  
Joseph C. Calabrese ◽  
Donald F. Gaines ◽  
Steven J. Hildebrandt ◽  
John H. Morris

1979 ◽  
Vol 35 (9) ◽  
pp. 2145-2149 ◽  
Author(s):  
K. Sasvári ◽  
M. Czugler ◽  
A. Gelléri ◽  
G. Náray-Szabó ◽  
H. Hess ◽  
...  

2003 ◽  
Vol 56 (9) ◽  
pp. 949 ◽  
Author(s):  
S. Ali Asghar Torabi ◽  
Fahimeh Jamali ◽  
George A. Koutsantonis ◽  
Ali Morsali ◽  
Brian W. Skelton ◽  
...  

A low-temperature single-crystal X-ray structure determination of the 1 : 1 adduct of copper(II) nitrate with 2,2′-diphenyl-4,4′-bithiazole (L) shows it to be a molecular complex with L behaving as a symmetrical N,N′ chelate, and the nitrate groups as unsymmetrical O,O′ chelates: [LCu(O2NO)2]. Two polymorphs, both monoclinic P21/c, have been obtained from acetonitrile (‘α’) and methanol (‘β’), respectively, with one molecule, devoid of crystallographic symmetry, in the asymmetric unit of each structure. The copper environments are distorted planar four-coordinate, cis-N2CuO2 (Cu–N 2.011(1), 1.973(1), Cu–O 1.995(1), 1.962(1) Å), ‘in-plane’ angle sum Σ 369.5°, with longer trans, axial contacts (Cu–O 2.455(1), 2.458(2) Å) for the α-form; respective values are 1.995(5), 1.991(4), 1.997(4), 1.973(3) Å, 360.4°, 2.500(4), and 2.396(4) Å for the β-form.


1998 ◽  
Vol 53 (5-6) ◽  
pp. 634-636 ◽  
Author(s):  
Martina Näveke ◽  
Armand Blaschette ◽  
Peter G. Jones

Abstract The crystal structure of the known title compound was determined by low-temperature X-ray diffraction (orthorhombic, space group Pbcn, Z = 4). The molecule displays an unusually short O-N bond, a relatively long C-O bond and a moderately pyramidal O-NS2 skeleton (O-N 133.1, C-O 148.5 pm, sum of bond angles at N: 347.4°).


1978 ◽  
Vol 17 (4) ◽  
pp. 790-794 ◽  
Author(s):  
Steven J. Hildebrandt ◽  
Donald F. Gaines ◽  
Joseph C. Calabrese

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