Synthesis, characterization and investigation of molecular motion by variable temperature 1H NMR of the bis(quadridentate)zirconium(IV) complexes bis(N,N′-disalicylidene-cis-1,2-diaminocyclohexanato)zirconium(IV) and bis(N,N′-disalicylidene-trans-1,2-diaminocyclohexanato)zirconium(IV), and comparisons with bis(N,N′-disalicylidene-1,2-phenylenediaminato)zirconium(IV). Crystal and molecular structure of the racemic Zr(trans-dsd)2 and Zr(S,S-trans-dsd)2 complexes

1993 ◽  
Vol 207 (2) ◽  
pp. 147-163 ◽  
Author(s):  
Marvin L. Illingsworth ◽  
Brian P. Cleary ◽  
Andrew J. Jensen ◽  
Leslie J. Schwartz ◽  
Arnold L. Rheingold
Keyword(s):  
Molecular Structure ◽  
1H Nmr ◽  
Molecular Motion ◽  
Crystal And Molecular Structure ◽  
Variable Temperature

Variable temperature study of the crystal structure of paracetamol (p-hydroxyacetanilide), by single crystal neutron diffraction

2000 ◽  
Vol 215 (11) ◽  
Author(s):  
C.C. Wilson
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Data Collection ◽  
Neutron Diffraction ◽  
Single Crystal ◽  
Crystal And Molecular Structure ◽  
Variable Temperature ◽  
Data Set ◽  
Temperature Study

The crystal and molecular structure of paracetamol (p-hydroxyacetanilide) has been determined by single crystal neutron diffraction at seven temperatures between 20 and 330 K. Short data collection times were used in this neutron study, with the fastest data set collected in just 5.5 hours, the longest in 11 hours. The structure is monoclinic, P2

Crystal and molecular structure of a platinum(II) complex with β-mercaptoethylamine hydrochloride

2018 ◽  
Vol 59 (1) ◽  
pp. 191-195
Author(s):  
A. N. Azizova ◽  
◽  
D. B. Tagiev ◽  
S. N. Osmanova ◽  
Sh. G. Kasumov ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Crystal And Molecular Structure

The crystal and molecular structure of tris(pentamethylenedithiocarbamate) chromium(III)-chloroform (1 : 2)

1981 ◽  
Vol 46 (1) ◽  
pp. 6-19 ◽  
Author(s):  
Viktor Kettman ◽  
Ján Garaj ◽  
Jaroslav Majer
Keyword(s):  
Molecular Structure ◽  
Structural Analysis ◽  
Crystal And Molecular Structure ◽  
Analysis Method ◽  
Complex Molecules ◽  
Coordination Polyhedra ◽  
X Ray ◽  
Cell Dimensions ◽  
Crustal Density ◽  
Unit Cell Dimensions

The crystal and molecular structure of [Cr(S2CN(CH2)5)3].2 CHCl3 was found by the X-ray structural analysis method. The value R 0.090 was found for 1 131 observed independent reflections. The substance crystallizes in a space group of symmetry P212121 with the following unit cell dimensions: a = 0.8675 (6), b = 1.815(2), c = 2.155(3) nm. The experimentally observed crustal density was 1.48 Mgm-3 and the value calculated for Z = 4 was 1.51 Mgm-3. The CrS6 coordination polyhedron has the shape of a trigonally distorted octahedron, where the D3 symmetry is a approximately retained. The degree of trigonal distortion expressed as the projection of the chelate S-Cr-S angle onto the plane perpendicular to the C3 pseudo axis is Φ = 41.7° (Φ = 60° for an octahedron). The skeleton of the structure formed by the complex molecules contains channels filled with chloroform molecules. The specific type of complex-chloroform interaction consists of the formation of hydrogen bonds of the chloroform protons with the fully occupied pπ-orbitals of the sulphur atoms in the coordination polyhedra. The low stability and crystal decomposition can be explained by loss of chloroform from the channels.

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