The Synthesis and Structural Studies of some Dialkyltin(IV) Salts of Strong Monobasic Acids

Abstract

A number of dialkyltin(1V)-bisfluorosulfates, -bistrifluoromethanesulfonates, and -bisdifluorophosphates are synthesized by solvolysis of dialkyltin(1V) chlorides in an excess of the corresponding acid according to 25 "C R2SnC12 + 2HX-R2SnX2 + 2HCI; R = CH,, C2H5, n-C3H7, n-C4Hg, and tl-C,H17 ; X = SO,F, SO,CF,, and P02F2. The structural proposals, hexacoordination for tin with the alkyl groups in trans-octahedral position and bidentate bridging anionic groups with coordination through oxygen, are based on l19Sn Mossbauer, infrared and, where obtainable, Raman spectra. The vibrational spectra of the difluorophosphates are discussed in detail. Variations in isomer shift and quadrupole splitting values with different alkyl groups in all three groups of compounds follow the same regular pattern as in the series R2SnF2. 0- L3

Preparation and Vibrational Spectra of Me2Sn(O2PMe2)2, Cl2Sn(O2PMe2)2 and Al(O2PMe2)3

“…Consequently, the tin methyl groups are in a ttw7.9-octahedral position and a sheet-like polymeric structure can be suggested for M e2S n (0 2PM e2)2. Similar structures have been found in M e2S n (0 2PCl2)2 [9], M e2S n (0 2P F 2)2 [10] and R 2S n (0 2PH 2)2 [11]. The band at 300 cm "1 in the IR spectrum o f Cl2S n (0 2PM e2)2 is attributed to v(SnCl2).…”

The synthesis, NMR (1H, 13C, 119Sn) and IR spectral studies of some di‐ and tri‐organotin(IV) sulfonates: X‐ray crystal structure of [(n‐C4H9)2Sn(OSO2C6H4CH3‐4)2·2H2O]

“…5 -14 On the basis of 119 Sn Mössbauer, vibrational data 5,6,9,10,12 and NMR ( 1 H, 13 C and 119 Sn), 14 polymeric structures containing six-coordinate and five-coordinate tin with bidentate bridging sulfonate anions were proposed for diorganotin(IV) and triorganotin(IV) sulfonates, 6,7,11,13,14 respectively. These proposals also find support from the 2 .…”

Infrared Spectra of Metal Bisfluorosulfates

“…There have been a number of reports recently on the preparation and characterization of metal fluorosulfate compounds, including binary metal mono-(1,2), bis-(3-8), tris-(3,9, lo), and tetrakis-(10, I I ) fluorosulfates, chloro-and organotinfluorosulfates ( 1 [1][2][3][4][5][6][7][8][9][10][11][12][13][14], oxyfluorosulfates (1 5-17) and methylcyanide complexes of metal fluorosulfates (1 8). In most instances infrared spectra have been recorded and evidence regarding structure and bonding has been deduced from the number and energies of observed anion vibrations.…”