X-ray structure analysis of 3-chloro-7-hydroxy-4- methyl-chroman-2-one
Journal Title: Journal of Applied and Natural Science - Year 2011, Vol 3, Issue 1
Abstract
The title compound crystallizes in the monoclinic space group P2 1 /c, with unit cell parameters a= 7.7203(3), b=14.0481(4), c=8.9066(3) Å , β =112.858(5)º, V= 890.11(5) Å 3 and Z = 4. The structure has been solved by direct methods and the final R-factor is 0.0433 for 2832 unique reflections. The molecule, as such, is planar and the planarity is confirmed by the magnitude of dihedral angles between the two rings. Extensive Hydrogen-bonding has been observed and chlorine atom is responsible for the formation of trifurcated hydrogen-bond. Trifurcated hydrogen-bond plays a significant role in the design and synthesis of molecules having drug implications.
Authors and Affiliations
Sakshi Sharma, Sabeta Kohli, Rajnikant
New record of earthworm Eukerria kuekenthali (Oligochaeta: Ocnerodrilidae) from Sikkim, India
The earthworm genus Eukerriakuekenthali (Michaelsen 1908) is recorded for the first time from the Sikkimese soil. Inter/ intra specific variations have not been observed. Altitude plays a vital role in the distribution p...
Effect of osmo air drying method on nutritional quality of peach (Prunus persica (l) batsch.) cultivars during storage
he present investigation was carried out with the objective to develop value added products and to assess the quality parameters of osmo air dried peach slices. The peach slices were dried by osmo air drying method. Dehy...
Effect of varietal performance on growth attributes and yields of lentil varieties under red and lateritic soil of West Bengal
A field experiment was conducted during rabi season of 2013-14 and 2014-15 at Agriculture Farm of Palli Siksha Bhavana (Institute of Agriculture), Visva-Bharati, Sriniketan, West Bengal to find out the varietal performan...
On the fundamentals of natural history and present threats to Red-wattled Lapwing in Kurukshetra environs
Red-wattled Lapwing Vanellus indicus is a very common bird seen on the periphery of Kurukshetra-Thanesar, twin towns, in agriculture fields. Last 28 years of keen observations reveal the fast coming up threats to its pop...
Seed yield of linseed varieties grown as ‘paira’ crop as influenced by dates of sowing
Linseed is an industrial crop cultivated for its seeds, fibres and oil purpose. Linseed crop can met their requirement i.e. moisture and nutritional demand from stored soil moisture and residual fertility status in "uter...