title: Crystal and molecular structure of N-(4-nitrophenyl)-β-alanine--its vibrational spectra and theoretical calculations.
abstract: The N-(4-nitrophenyl)-β-alanine in crystalline form directly by the addition of 4-nitroaniline to the acrylic acid in aqueous solution has been obtained. The title β-alanine derivative crystallizes in the P2(1)/c space group of monoclinic system with four molecules per unit cell. The X-ray geometry of β-alanine derivative molecule has been compared with those obtained by molecular orbital calculations corresponding to the gas phase. In the crystal the molecules related by an inversion center interact via symmetrically equivalent O-H···O hydrogen bonds with O···O distance of 2.656(2) Å forming a dimeric structure. The dimers of β-alanine derivative weakly interact via N-H···O hydrogen bonds between the H atom of β-amine groups and one of O atom of nitro groups. The room temperature powder vibrational (infrared and Raman) measurements are in accordance with the X-ray analysis. In aqueous solution of 4-nitroaniline and acrylic acid, the double CC bond of vinyl group of acrylic acid breaks as result of 4-nitroaniline addition.
authors.affiliation: Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50-950 Wrocław, 2, P.O. Box 937, Poland. M.Marchewka@int.pan.wroc.pl
authors.forename: M K
authors.initials: MK
authors.lastname: Marchewka
authors.forename: M
authors.initials: M
authors.lastname: Drozd
authors.forename: J
authors.initials: J
authors.lastname: Janczak
mesh_terms: D000409:Alanine / Q000031:analogs & derivatives* / Q000737:chemistry; D003460:Crystallization; D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D008956:Models, Chemical; D008958:Models, Molecular; D009596:Nitrophenols / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D013059:Spectrum Analysis, Raman; D014732:Vibration; D015091:beta-Alanine / Q000737:chemistry*
chemical_list: D009596:Nitrophenols; D015091:beta-Alanine; C024719:4-nitrophenyl; D000409:Alanine