Photoreduction of benzophenone analogues by alcohol and ether: Self recognition molecular assemblies

Photoreduction of benzophenone analogues 1 to benzopinacol analogues 2 in 2-propanol and diethyl ether have been studied under various experimental conditions. Two analogues namely 1,2-ethanediol 1,2-bis (3,4-dimethoxyphenyl)-1,2-diphenyl 2a and 1,2-ethanediol, 1,2-bis (l,4-benzodioxin)-1,2 diphenyl 2b have been isolated and structurally characterized by X-ray crystallography. The structures of 2a and 2b indicate that these two are programmed molecular systems with complementary recognition groups that contain information for the self assembly into supramolecular ribbons

Crystal and molecular structure studies of some organic haloamines

Sodium salt of N-bromobenzenesulfonamide, C6H5SO2NBrNa 1.5H2O, F.W = 282.07, monoclinic, P21/c, a = 10.499(3) Å, b = 6.750(4) Å, c = 11.802(6) Å, β = 104.08(3)°, V = 1017.4(8) Å3, Z = 4, Dclac = 1.841 gm cm−3, μ = 4.267 cm−1, F 000 = 552, λ(MoKα) = 0.71069 Å, final R1 and ωR2 are 0.116 and 0.279 respectively. The crystal structure shows the dominant motif which can be described as an aquo-bridged sodium dimer (Na-O = 2.4382(2)Å, 2.4392(1)Å). In addition to the bridging of water molecules, the halves of the dimer are held together by a hydrogen bond between a coordinated water molecule and the amido nitrogen. N,N1 -dibromobenzenesulfonamide, C6H5SO2NBr2, F.W = 314.98, monoclinic, P21/c, a = 10.518(5) Å, b = 8.10(1) Å, c = 11.812(6) Å, β = 112.83(4)°, V = 926(1) Å3 Z = 4, D calc = 1.26 gm cm−3, μ = 8.95 cm−1, Fooo = 600, λ(MoKα) = 0.71069 Å, final R and R ω are 0.069 and 0.079 respectively. N,N1 ′-dichlorobenzenesulfonamide, C6H5SO2NCl2, F.W = 226.08, monoclinic, P21 /c, a = 10.42(l)Å, b = 8.098(8)Å, c = 11.697(7)Å, β= 113.03(4)°, V = 908(1) Å3, Z = 4, D calc = 1.65 gm cm−3, μ = 8.94cm−1, F 000 = 456, λ(MoKα) = 0.71069 Å, final R and Rω are 0.04 and 0.044 respectively. N,N1 -dichloro-4-methylbenzenesulfonamide, C7H7SO2NCl2, F.W = 240.10, monoclinic, P21/n, a = 7.179(3) Å, b = 16.217(2) Å, c = 8.692(3) Å, β = 96.69(3)°, V = 1005.1(4) Å3, Z = 4, D calc = 1.598gm cm−3, μ = 8.2cm−1, F 000 = 488, λ(MoKα) = 0.71069Å, final R and R ω, are 0.055 and 0.079 respectively

Crystal and molecular structure studies of tris(2-hydroxy-3-t-butyl-5-methylbenzene)-methane trihydrate and N-benzyl-N-phenyl benzamide

The structures of the title compounds, tris(2-hydroxy-3-t-butyl-5-methylbenzene)-methane)C34H46O3.3H2O, 3) and N-benzyl-N-phenylbenzamide (C20H17NO, 6), have been investigated by X-ray crystallography. Compound 3 crystallizes in the trigonal space group P\backslashbar 3 with cell parameters a = 14.090(5) Å, b = 14.090(5)Å, c = 10.485(5)Å, Z = 2. Compound 6 crystallizes in the monoclinic space group C2/c with cell parameters a = 24.533(4)Å, b = 9.176(4)Å, c = 16.711(5)Å, β = 125.88(2)°, Z = 8. Compound 3 has both intra-and intermolecular hydrogen bonds. It also exhibits a helical columnar arrangement of the molecules and goes into mesophase before melting into an isotropic liquid

Photoreduction of benzophenone analogues by alcohol and ether: Self recognition molecular assemblies

196-200Photoreduction of benzophenone analogues 1 to benzopinacol analogues 2 in 2-propanol and diethyl ether have been studied under various experimental conditions. Two analogues namely 1,2-ethanediol 1,2-bis (3,4-dimethoxyphenyl)-1,2-diphenyl 2a and 1,2-ethanediol, 1,2-bis (l,4-benzodioxin)-1,2 diphenyl 2b have been isolated and structurally characterized by X-ray crystallography. The structures of 2a and 2b indicate that these two are programmed molecular systems with complementary recognition groups that contain information for the self assembly into supramolecular ribbons

Crystal and molecular structure of dibromamine-T

The crystal structure of dibromamine-T, an important brominating/oxidising agent, which crystallizes in the monoclinic space group P21/c with cell parameters a = 10.325(3)Å, b = 8.281 (2) Å, c = 12.611 (5) Å ,β = 102.44(3)° and Z = 4 has been solved using DlRDIF programme and refined using SHELXL. The structure shows both intramolecular and intermolecular hydrogen bonds of the type CH .... O. The molecules are arranged in layers

7-Chloro-5-cyclopropyl-9-methyl-5H-4,5,6,10-tetraazadibenzo[a,d]cyclohepten-11(10H)-one

In the title compound, C15H13ClN4O, which is a chloro derivative of the drug Nevirapine, the diazepine ring is in a twisted boat conformation. The pyridine rings fused to the diazepine fragment form a dihedral angle of 58.44 (10)° and the molecule adopts a butterfly shape. The molecules are joined via N—H...N hydrogen bonding into polymeric chains down the b axis. All weaker C—H...O interactions involve the carbonyl O atom as acceptor

Characterization of peroxidase enzyme and detoxification of phenols using peroxidase enzyme obtained from Zea mays L waste

Abstract Phenol is one of the greatest menaces among the industrial pollutants. A treatment method which utilizes agricultural wastes in a simple manner has become the need of the hour. In this investigation, details on the extraction, optimization of parameters and study of detoxification potential of the peroxidase enzyme obtained from baby corn waste have been elaborated. The enzyme has been extracted from both corn silk and husk, and studies have been conducted on both the samples. Estimation of amount of protein and enzyme activity has shown promising results, and the conditions optimized are easily attainable at larger scales, making this work feasible for scale-up