Synthesis and NMR Investigation of Phosphineiminophosphonium Organofluorophosphate Salts

Preparation and Properties of Dimethyltetrafluorophosphate

“…The volatiles were removed in dynamic vacuum at room temperature. (5), 480 (7), 517 (6), 598 (2), 640 (18), 655 (5), 701 (2), 743 (6), 759 (31), 950 (9), 956 (14), 1176 (2), 1183 (1), 1288 (2), 1413 (3), 1420 (2), 1468 (18), 1483 (6), 1487 (5), 1500 (2), 1558 (1), 2812 (6), 2824 (6), 2860 (14) (11), 291 (11), 390 (2), 407 (2), 475 (8), 514 (4), 641 (6), 646 (11), 650 (18), 780 (9), 1424 (13), 2927 (61), 2937 (39), 3006 (100).…”

“…MePF 4 has typical properties of a Lewis acid, whereas the last member, Me 4 PF, serves as a source for “naked” fluoride. , Methyltetrafluorophosphorane reacts easily with alkali metal fluorides or Me 4 NF under formation of methylpentafluorophosphates (eq ) MePF 4 + MF → normalM + MePF 5 − 3em false( normalM = Cs , Me 4 normalN , Me 4 normalP false) In contrast to the well characterized MePF 5 − -anion, the homologous dimethyltetrafluorophosphate was described only as a product of the reaction of dimethyltrifluorophosphorane with N -trimethylsilylphosphine imines (eq ). − 2 Me 3 SiN = PR 3 + Me 2 PF 3 → false[ Me 2 normalP − false( normalN  PR 3 false) 2 false] + false[ Me 2 PF 4 false] − + Me 3 SiF 3em false( normalR = CH 3 , normalC …”

“…1 In contrast to the well characterized MePF 5 --anion, 1 the homologous dimethyltetrafluorophosphate was described only as a product of the reaction of dimethyltrifluorophosphorane with N-trimethylsilylphosphine imines (eq 2). [3][4][5][6] 2Me 3 SiN…”