FT IR and FT Raman spectra of Ag3(PO2NH), (Compound I), Na3(PO2NH)3.H2O (Compound II), Na3(PO2NH)3.4H2O (Compound III), [C(NH2)3]3(PO2NH)3.H2O (Compound IV) and (NH4)4(PO2NH)4.4H2O (Compound V) are recorded and analyzed on the basis of the anions, cations and water molecules present in each of them. The PO2NH − anion ring in compound I is distorted due to the influence of Ag cation. Wide variat...

Tioxolone possess antipsoriatic and antibacterial properties. Therefore, it has been used in treating various skin and scalp disorders for many years. Spectroscopic analysis of tioxolone was presented by using density functional theory (DFT) calculations and experiments (FT-IR, FT-Raman and UVeVis). Molecular geometry and vibrational wavenumbers of tioxolone were investigated by using B3LYP met...

The FTIR and FT-Raman spectra of 2,4,6-trimethylphenol (TMP) have been recorded in the regions 4000-400 cm and 3500-50 cm, respectively. The optimum molecular geometry, harmonic vibrational frequencies, infrared intensities and Raman scattering activities were calculated by ab initio Hartree–Fock (HF) and density functional theory (DFT/B3LYP) methods using 6-31+G(d,p) basis set. The normal mode...

Muscle foods are an integral part of the human diet and during the last few decades consumption of poultry products in particular has increased significantly. It is important for consumers, retailers and food regulatory bodies that these products are of a consistently high quality, authentic, and have not been subjected to adulteration by any lower-grade material either by accident or for econo...

A new indole ring-terminated thiol, ω-mercaptooctyltryptamide (MOTA), has been synthesized and the structure of self-assembled monolayer (SAM) on Ag electrode was characterized by surface-enhanced Raman spectroscopy (SERS). The frequency of conformational marker W3 band has been found to increase by 3 cm–1 in surface spectrum as compared with the FT-Raman spectrum of solid MOTA compound, indica...

We analyzed samples of antigorite, lizardite and fibrous chrysotile, three representative minerals of the serpentine group, to determine their chemical and structural properties, and their FT-Raman spectra. The low-frequency region of the spectrum (1200– 200 cm–1), which corresponds to the lattice-vibration modes, was then analyzed, and the observed bands attributed, on the basis of our results...

FT-Raman spectroscopy and ATR-IR spectroscopy were applied to study the secondary structure of the eggshell (chorion) proteins of the teleostean fish Dentex dentex. Raman and IR spectra clearly indicate an abundance of antiparallel beta-pleated sheet conformation in chorion proteins. This finding is further supported by analysis of the vibrational data by regression techniques and deconvolution...

Near-infrared (NIR) Fourier transform (FT) surface-enhanced Raman scattering (SERS) spectra were measured for Langmuir-Blodgett (LB) and dipping films of azobenzene-containing long-chain fatty acids (nAmH, n ) 8, 12, m ) 3, 5) on silver substrates prepared by silver mirror and nitric acid etched silver foil methods. FT-IR spectra were also obtained for some of the films on silver mirror, silver...

background and aims: although dental caries is a preventable disease, it is still common and remains a public health problem. one of the potentially effective preventive measures is laser irradiation. raman spectroscopy is a powerful technique for studying the microcrystalline structure of dental enamel. the study assessed the chemical alterations occurring in enamel irradiated with er:yag or n...