Kerr Constant Measurement of Water- Acetone System and Molecular Structure in Solution

2012 ◽  
Vol 3 (4) ◽  
pp. 431-434
Author(s):  
R. K. KHANNA R. K. KHANNA ◽  
◽  
GEETA GARG
1999 ◽  
Vol 38 (9) ◽  
pp. 1982-1988 ◽  
Author(s):  
Subodh Kanti Dutta ◽  
Satyabrata Samanta ◽  
Sujit Baran Kumar ◽  
Oc Hee Han ◽  
Pannee Burckel ◽  
...  

1995 ◽  
Vol 50 (2) ◽  
pp. 201-204 ◽  
Author(s):  
Bernd Wrackmeyer ◽  
Udo Dörfler ◽  
Wolfgang Milius ◽  
Max Herberhold

According to a single crystal X-ray structure determination all three ferrocenyl substituents of triferrocenylborane (1) adopt the same orientation with respect to the BC3-plane [P21/c monoclinic; Z = 4; a = 1353.5(3), b = 1695.6(3), c = 1056.4(2) pm, β = 109.27(3)°]. The simulated X-ray powder pattern of the single crystal is identical with the powder diagram of a macroscopic sample, indicating the presence of a single diastereomer (1a) in the solid state. However, at low temperature (< - 95 °C) in solution, the 13C NMR spectra suggest the presence of the second diastereomer (1b) in which one ferrocenyl group is oriented opposite to the other two with respect to the central BC3-plane.


1990 ◽  
Vol 68 (12) ◽  
pp. 2192-2197
Author(s):  
Jean-Pierre Reboul ◽  
Pierre Brouant ◽  
Jacques Barbe ◽  
Claude Caranoni ◽  
Catherine Soula ◽  
...  

The solid state configuration of 1-isopropyl-2-phenyl-1,3-diaza-6-one-bicyclo[3.3.0]oct-2-ene was determined from X-ray diffraction data (a = 10.039(3) Å; b = 8.683(3) Å; c = 15.505(6) Å; β = 90.72(9)°; P21/c;R = 0.047). This structure is compared to those of three other related (Δ-2)-imidazolines. Molecular structure in solution was investigated by 1H nuclear magnetic resonance spectroscopy. Results clearly indicate that the title compound has the same structure in the solid state as in solution. On the contrary, this configuration differs appreciably from those of other (Δ-2)-imidazolines considered in this report. Keywords: (Δ-2)-imidazolines, crystal structure, NMR, conformations.


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