A vibrational study of di-i-propoxyphosphoryl benzylisothiourea

Conformational and vibrational study of di‐n‐propyl and di‐i‐propylphosphonates by MM/QM method

“…Their conformational stability and vibrational spectra, including those of phosphine derivatives, were studied by ab initio methods at the RHF/3‐21G, RHF/6‐31G*, and MP2/6‐31G levels 8. Recently, the FT‐IR and FT‐Raman spectra of N‐di‐isopropylphosphorylguanidine (DPG) 9 and the vibrational analysis of di‐iso‐propoxyphosphoryl‐benzylisothiourea were published 10.…”

Structural characterization and electrochemical properties of novel salicylidene phosphonate derivatives

“…In the spectra of the ligands, the triplets in the 1.26-1.32 ppm range can be attributed to the CH 3 hydrogen atoms. The dublets in the 3.15-3.19 ppm range may be assigned to the -P-CH 2 -group protons [15]. In the spectrum of the ligand HL 2 , the singlet at 3.95 ppm can be attributed to the -OCH 3 protons.…”

The metal complexes of new Schiff bases containing phosphonate groups and catalytic properties for alkane oxidation

“…In the spectra of HL 1 and HL 2 , the triplet signals in the 1.25–1.28 ppm range can be attributed to the CH 3 hydrogen atoms. The doublets in the 3.22–3.24 ppm range may be assigned to the –P–CH 2 – group protons . The –CH 2 – proton signals were observed in the 4.12–4.13 ppm range for both ligands.…”

“…The –CH 2 – proton signals were observed in the 4.12–4.13 ppm range for both ligands. The azomethine protons of the ligands were seen in the range 8.41–8.64 ppm . In the spectra of HL 1 , two broad signals at 13.8 and 5.95 ppm were assigned to phenolic protons.…”