Syntheses and spectroscopic investigation of some cyclophosphazanes: Analysis of pseudo‐triplet splitting

Abstract

Some new phosphoramidates, 1-3, and the corresponding cyclophosphazanes, 4-6,

Novel organotin(IV) complexes of organophosphorus ligands: Synthesis, spectroscopic, structural study and DFT calculations

“…Also, the 1 Table 2) to 71.2/68.2 Hz (for 20 in Table 2). Such couplings were observed for similar reported organotin(IV) complexes containing phosphoric triamide ligands [26,27].…”

Diorganotin(IV) complexes of N-mono-, di- and tri-chloroacetyl, N′,N″-bis(isopropyl) phosphoric triamide

“…Such a trend away from TBP geometry can also be observed by examining the bond angles subtended by O(4) on the equatorial plane. The angles O(4)eSn(2)eC (19), O(4)eSn(2)eC (20) and O(4)e Sn(2)eCl(6) are 79.97 (16), 82.74 (16) and 77.47 (7) , respectively, are all much lower than the expected 90 for a regular TBP geometry. However, at the other apex of the bipyramid, Cl(5) subtends much larger angles; the angles Cl(5)eSn(2)eC (19), Cl(5)eSn(2)eC (20) and Cl(5)eSn(2)eCl(6) are 101.02(15), 101.05 (14) and 94.67(4) , respectively.…”

“…Calc. for C 20 To a stirred solution of 2 (87 mg, 0.3 mmol), a solution of (CH 3 ) 2 SnCl 2 (33 mg, 0.15 mmol) in 10 ml of toluene was added and heated (50e60 C) for 2 h. The resulting mixture was then stirred at room temperature overnight. Crystals suitable for X-ray diffraction were obtained from evaporation of this solution.…”