Spectra and structure of phosphorus-boron compounds. 13. A multinuclear magnetic resonance study of cyclic boron-phosphorus compounds

Sens, M. A.; Odom, J. D.; Goodrow, Marvin H.

doi:10.1021/ic50165a052

Cited by 22 publications

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“…A coupling constant of 85.8 Hz is observed, which can be assigned as the J PB coupling between the 31 P and 11 B atoms adjacent to each other. The J PB value is similar to the reported value (80.1 Hz) for [(R 2 PBX 2 ) 4 ] (R = CH 3 , X = H) . In the 11 B{ 1 H} NMR spectrum, we obtained a doublet at −38.1 ppm for the BH 3 group.…”

Section: Resultssupporting

confidence: 89%

Amidophosphine–Borane Complexes of Alkali Metals and the Heavier Alkaline-Earth Metals: Syntheses and Structural Studies

et al. 2013

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The N-benzhydrylamido-1,1-diphenylphosphine−borane ligand [Ph 2 P(BH 3 )NH(CHPh 2 )] (1-H) has been prepared via the reaction of an equimolar ratio of the phosphine amine [Ph 2 PNH(CHPh 2 )] and the borane adduct [BH 3 •SMe 2 ] at an ambient temperature. The reaction of 1-H with ((trimethylsilyl)methyl)lithium (neosilyllithium), [LiCH 2 SiMe 3 ], afforded a three-membered lithium amidophosphine−borane complex with the composition ([η 2 -Ph 2 CHNP(BH 3 )Ph 2 )Li(THF) 2 ] (2). Analogous reactions with sodium and potassium bis(trimethylsilyl)amides at ambient temperature yielded the respective alkali-metal amidophosphine−borane complexes [{(Ph 2 CHNP(BH 3 )Ph 2 )Na(THF) 2 } 2 ] (3) and [{(Ph 2 CHNP(BH 3 )Ph 2 )K(THF) 2 } 2 ] (4), with the loss of hexamethyldisilazane, [(Me 3 Si) 2 NH]. The corresponding heavier alkaline-earth-metal complexes [M-(THF) 2 {Ph 2 P(BH 3 )N(CHPh 2 )} 2 ] (M = Ca ( 5), Sr (6), Ba ( 7)) can be obtained via the reaction of [M{N(SiMe 3 ) 2 } 2 (THF) n ] (M = Ca, Sr, Ba) and 1-H. The metal complexes 5−7 can also be prepared via a salt metathesis route, where the alkali-metal salts 3 and 4 were reacted with the respective metal diiodides in THF at ambient temperature. The molecular structures of 1-H and 2−7 have been established by X-ray diffraction analyses, and from the solid-state structures of 3−7, it was confirmed that, in all of the compounds, the metal ions are chelated through the nitrogen atom and the hydrogen atoms of the borane group of ligand 1-H.

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Section: Resultssupporting

confidence: 89%

Amidophosphine–Borane Complexes of Alkali Metals and the Heavier Alkaline-Earth Metals: Syntheses and Structural Studies

et al. 2013

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Reactions of sterically protected phosphaalkenes with some boron reagents

1999

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Contributions to the Chemistry of Boron, 205. Formation of Phosphinoborane Rings. A Reinvestigation of the Reaction of [(CH₃)₃Si]₃P with Borane(3)

et al. 1990

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Spectra and structure of phosphorus-boron compounds. 13. A multinuclear magnetic resonance study of cyclic boron-phosphorus compounds

Cited by 22 publications

References 6 publications

Amidophosphine–Borane Complexes of Alkali Metals and the Heavier Alkaline-Earth Metals: Syntheses and Structural Studies

Amidophosphine–Borane Complexes of Alkali Metals and the Heavier Alkaline-Earth Metals: Syntheses and Structural Studies

Reactions of sterically protected phosphaalkenes with some boron reagents

Contributions to the Chemistry of Boron, 205. Formation of Phosphinoborane Rings. A Reinvestigation of the Reaction of [(CH₃)₃Si]₃P with Borane(3)

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Spectra and structure of phosphorus-boron compounds. 13. A multinuclear magnetic resonance study of cyclic boron-phosphorus compounds

Cited by 22 publications

References 6 publications

Amidophosphine–Borane Complexes of Alkali Metals and the Heavier Alkaline-Earth Metals: Syntheses and Structural Studies

Amidophosphine–Borane Complexes of Alkali Metals and the Heavier Alkaline-Earth Metals: Syntheses and Structural Studies

Reactions of sterically protected phosphaalkenes with some boron reagents

Contributions to the Chemistry of Boron, 205. Formation of Phosphinoborane Rings. A Reinvestigation of the Reaction of [(CH3)3Si]3P with Borane(3)

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Contributions to the Chemistry of Boron, 205. Formation of Phosphinoborane Rings. A Reinvestigation of the Reaction of [(CH₃)₃Si]₃P with Borane(3)