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• W2024952049 endingPage "4144" @default.
• W2024952049 startingPage "4136" @default.
• W2024952049 abstract "The sterically hindered meta-terphenyl trifluorosilanes Tip2C6H3SiF3 (1), Mes2C6H3SiF3 (2) (Tip = 2,4,6-triisopropylphenyl; Mes = 2,4,6-trimethylphenyl), and trifluoro(2,4,6-tri-tert-butylphenyl)silane 2,4,6-tert-Bu3C6H2SiF3 (3) react unconventionally with lithium bis(trimethylsilyl)phosphide LiP(SiMe3)2 to form corresponding lithium (aryldifluosilanyl)trimethylsilylphosphides ArSiF2P(Li)SiMe3 (Ar = Tip2C6H3, 5; Mes2C6H3, 6; 2,4,6-tert-Bu3C6H2, 7) and fluorotrimethylsilane rather than LiF. The central Si−P bond lengths of 5−7 are short and positioned somewhere between typical single and double silicon−phosphorus bonds. The thermolysis of lithium [difluoro(2,4,6-tri-tert-butylphenyl)silanyl]trimethylsilylphosphide (7) led to 2,4-diorgano-[1,3,2,4]diphosphadisiletane derivatives R2Si(PH)2SiR2 (R2Si = 5,7-di-tert-butyl-3,3-dimethyl-2,3-dihydro-1H-benzo[b]silole) 11 and R2Si(PH)(PSiMe3)SiR2 (R2Si = 5,7-di-tert-butyl-3,3-dimethyl-2,3-dihydro-1H-benzo[b]silole) 12. The lithium and sodium bis(trimethylsilyl)amides react conventionally with 1−3 to form thermally stable bis(trimethylsilyl)aminodifluoroarylsilanes ArSiF2N(SiMe3)2 (Ar = Tip2C6H3, 18; Mes2C6H3, 19; 2,4,6-tert-Bu3C6H2, 20). The reaction of sodium amide and meta-terphenyl trifluorosilanes Tip2C6H3SiF3 (1) produced the 2,4-diorgano-[1,3,2,4]diazadisiletane Tip2C6H3Si(F)(NH)2(F)SiC6H3Tip2 (21). The transannular nonbonding Si−Si distance in the ring of 21 was found to be 2.4911(13) Å." @default.
• W2024952049 created "2016-06-24" @default.
• W2024952049 creator A5011529626 @default.
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• W2024952049 date "2003-08-27" @default.
• W2024952049 modified "2023-09-25" @default.
• W2024952049 title "Synthesis and Unusual Thermal Behavior of (Lithium phosphino/amino) Difluorosilanes" @default.
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• W2024952049 doi "https://doi.org/10.1021/om0304412" @default.
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