Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 4 of 4
Full-Text Articles in Physical Sciences and Mathematics
Effect Of A Strategically Positioned Methoxy Substituent On The Photochemistry Of 3-Aryl-3h-1-Oxacyclopenta[L]Phenanthren-2-Ones, Roshini Thumpakara, Binoy Jose, Perupparampil Unnikrishnan, Sreedharan Prathapan, Nigam Rath
Effect Of A Strategically Positioned Methoxy Substituent On The Photochemistry Of 3-Aryl-3h-1-Oxacyclopenta[L]Phenanthren-2-Ones, Roshini Thumpakara, Binoy Jose, Perupparampil Unnikrishnan, Sreedharan Prathapan, Nigam Rath
Chemistry & Biochemistry Faculty Works
Irradiation of 3-methoxy-3-aryl-3H-1-oxacyclopenta[l]phenanthren-2-one derivatives 5a–d resulted in singlet-mediated decarbonylation reaction leading to the formation of phenanthrene derivatives 9a–d. The structure of the photoproduct was unequivocally established on the basis of X-ray crystallographic analysis.
(1e,3e)-1,4-Bis(4-Methoxyphenyl)Buta1,3-Diene, Gopinathan Narayan, Nigam Rath, Suresh Das
(1e,3e)-1,4-Bis(4-Methoxyphenyl)Buta1,3-Diene, Gopinathan Narayan, Nigam Rath, Suresh Das
Chemistry & Biochemistry Faculty Works
The title compound, C18H18O2, which exhibits blue emission in the solid state, is an intermediate in the preparation of liquid crystals and polymers. The molecule is located on an inversion centre. In the crystal, molecules are arranged in a herringbone motif.
2,4,6-TriphenylAniline, Onome Ugono, Stephanie Cowin, Alicia Beatty
2,4,6-TriphenylAniline, Onome Ugono, Stephanie Cowin, Alicia Beatty
Chemistry & Biochemistry Faculty Works
Individual molecules of the title compound, C24H19N, do not participate in hydrogen-bonding interactions due to the steric bulk of the phenyl rings ortho to the amine. The dihedral angles between the central ring and the pendant rings are 68.26 (10), 55.28 (10) and 30.61 (11)°.
New Chiral Phosphoramidite Complexes Of Iron As Catalytic Precursors In The Oxidation Of Activated Methylene Groups, Pushkar Shejwalkar, Nigam Rath, Eike Bauer
New Chiral Phosphoramidite Complexes Of Iron As Catalytic Precursors In The Oxidation Of Activated Methylene Groups, Pushkar Shejwalkar, Nigam Rath, Eike Bauer
Chemistry & Biochemistry Faculty Works
New phosphoramidite complexes of iron were synthesized and structurally characterized. Reaction of the known chiral phosphoramidites (RO)2PNR’2 (R = binaphthyl, R’ = CH3, 1a; R = binaphthyl, R’ = benzyl, 1b) with [FeBr(Cp)(CO)2] afforded the title compounds [FeBr(Cp)(CO)(1a,b)] (4a,b) in 34 and 65 % isolated yields as mixtures of diastereomers, since both the metal and the ligand are stereogenic. Similarly, reaction of 1b with [Fe(Cp)I(CO)2] in the presence of catalytic [Fe(Cp)(CO)2]2 afforded [Fe(Cp)I(CO)(1b)] (5b) in 81% yield as a mixture of diastereomers. The molecular structures of 4a, 4b and 5 were determined, revealing a pseudo octahedral coordination geometry about the …