P A College of Engineering

About: P A College of Engineering is a based out in . It is known for research contribution in the topics: Dihedral angle & Ring (chemistry). The organization has 298 authors who have published 594 publications receiving 4888 citations.

2,3-Dibromo-1-(4-methoxy­phen­yl)-3-[4-(methyl­sulfanyl)phen­yl]propan-1-one

Abstract: The title compound, C17H16Br2O2S, crystallizes in a centro-symmetric space group and thus does not show any non-linear optical activity.

Crystal Structure of [4-(Methylsulfanyl)Phenyl]Acetic Acid

Abstract: The title compound, C9H10O2S, (I), crystallizes in the triclinic space group, P − 1, with unit cell parameters a = 6.2249(3), b = 7.3733(5), c = 19.5708(12), A, α = 86.746(5)°, β = 88.682(5)°, γ = 86.988(5)°, Z = 4. The molecule consists of a methyl sulfanyl group bonded to benzyl acetic acid at the 4 position crystallizing with two molecules in the asymmetric unit. The carboxylic acid group from the acetic acid moiety in these two molecules forms a classic O–H···O hydrogen bonded dimer with O···O distances of 2.673(2) and 2.646(2) A, in a R 2 2 (8) graph-set motif which link the molecules into pairs around inversion centers in the unit cell. The dihedral angles between the mean planes of the R 2 2 (8) graph-set motif with the mean planes of the two nearby benzyl groups within the same dimer in the unit cell are 64.1(6)° and 71.3(4)°, respectively. Within the same dimer the dihedral angle between the two benzyl groups is 45.2(1)°. The structure is supported by a weak intermolecular C–H···Cg π-ring interaction and gives support to molecular packing stability in the unit cell. Comparison to a MOPAC AM1 computational calculation provides support to these observations. The crystal structure of [4-(methylsulfanyl)phenyl]acetic acid is investigated. The molecule, C9H10O2S, crystallizes in the triclinic space group, P − 1, with two molecules in the asymmetric unit. The carboxylic acid group from the acetic acid moiety in these two molecules forms a classic O–H···O hydrogen bonded dimer in a R 2 2 (8) graph-set motif which link the molecules into pairs around inversion centers in the unit cell. Its geometric and packing parameters are described and compared to a MOPAC AM1 computational calculation.

Influence of Cryogenic Treatment on TiC Nanopowder in R600a and R290 Refrigerant Used in Vapor Compression Refrigeration System

Abstract: This paper studies the performance of vapor compression refrigeration system using hydrocarbon refrigerant (HCR) mixture (R600a and R290), hydrocarbon nanorefrigerant mixture (R600a and R290/TiC) a...

3-(6-Methoxy-2-naphthyl)-1-(2-thienyl)-prop-2-en-1-one

Abstract: The mol­ecule of the title compound, C18H14O2S, is essentially planar. The central C=C double bond is trans-configured. Geometric parameters are in normal ranges.