Organogermanium(iv) O,o,alkylenedi-Thiophosphates

Rao, R. J.

doi:10.1080/10426509008038027

Cited by 6 publications

(3 citation statements)

References 17 publications

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“…In this paper, the synthesis, multinuclear NMR spectroscopy, positive FAB mass, and crystal structures ( 1 , 4 , 6 , and 7) of diselenophosphate derivatives of organogermanium(IV), tin(IV), and lead(IV) are reported. The chemistry of related dithiophosphates with organogermanium(IV), tin(IV), and lead (IV) has been reported. − The solution-state fluxionality of tin and lead complexes as well as gas-phase stability of dinuclear ions, such as [(Ph 3 M) 2 {μ-Se, Se-P(OR) 2 }] + (M = Ge, Sn, Pb) are the interesting features of the studies. The exchange of free energy between coordinated and pendant Se donor atoms is also calculated for the tin and lead compounds.…”

Section: Introductionmentioning

confidence: 99%

“…The chemistry of related dithiophosphates with organogermanium(IV), tin(IV), and lead (IV) has been reported. [35][36][37][38][39][40][41][42][43][44] The solution-state fluxionality of tin and lead complexes as well as gasphase stability of dinuclear ions, such as [(Ph 3 M) 2 {µ-Se, Se-P(OR) 2 }] + (M ) Ge, Sn, Pb) are the interesting features of the studies. The exchange of free energy between coordinated and pendant Se donor atoms is also calculated for the tin and lead compounds.…”

Section: Introductionmentioning

confidence: 99%

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Syntheses, Structures, and VT NMR Studies of Diselenophosphates of Group 14 Organometals. DFT Calculations for Gas-Phase Stability of Dinuclear Ions, [(Ph₃M)₂{μ-Se, Se-P(OR)₂}]⁺(M = Ge, Sn, and Pb)

et al. 2005

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Equimolar reactions of group 14 compounds, (C 6 H 5 ) 3 MCl with (NH 4 )[Se 2 P(OR) 2 ], in diethyl ether yielded the first organometallic derivatives of diselenophosphates, viz., [Ph 3 M{η 1 -Se (Se)P(OR) 2 }] [M) Ge, R ) Et, i Pr, n Pr (1-3); Sn, Et, i Pr, n Pr (4-6); Pb, Et, i Pr, n Pr (7-9)]. The crystal structures of 1, 4, 6, and 7 showed that the geometry around a metal center for each compound is distorted tetrahedral. The (η 1 -Se) coordination mode with one pendant Se atom exhibited in these complexes is the new connective pattern for the diselenophosphates. 31 P and 77 Se NMR spectral studies reveal that whereas germanium compounds do not show lability of Ge-Se bonds, the Sn and Pb compounds do exhibit lability of Sn-Se and Pb-Se bonds, which involve exchange of the coordinated and pendant Se atoms at room temperature. This exchange process is slowed at low temperature and stopped at around 210 K. The exchange energy (∆G q ) is calculated to be in the range of 38-46 kJ mol -1 for compounds 4-9. Positive FAB-mass spectral data reveal that germanium compounds 1 and 3 have nearly equal abundance of molecular ions [(Ph 3 M){µ-Se, Se-P(OR) 2 }] + and dinuclear cations [(Ph 3 M) 2 -{µ-Se, Se-P(OR) 2 }] + ; the same is not true for tin and lead compounds 4, 5, 7, and 8, whose dinuclear cations are several times intense over their molecular ions. The structures of these dinuclear cations as well as their formation pathway have been studied by the density functional theory calculations.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Syntheses, Structures, and VT NMR Studies of Diselenophosphates of Group 14 Organometals. DFT Calculations for Gas-Phase Stability of Dinuclear Ions, [(Ph₃M)₂{μ-Se, Se-P(OR)₂}]⁺(M = Ge, Sn, and Pb)

et al. 2005

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“…had not been given due consideration [11][12][13]. Besides, organothiophosphorus derivatives of lead appear to be limited to dithiophosphato moieties [6,14,15].…”

Section: Introductionmentioning

confidence: 99%

Reactions of dithioxo-1,3,2?5,4?5-dithiadiphosphetanes with triorganolead derivatives

1997

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New methods of synthesis of boron, germanium, and tin derivatives of pentavalent phosphorus thioacids

Низамов

Сорокина

Nizamov

et al. 2002

Heteroatom Chemistry

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Organogermanium(iv) O,o,alkylenedi-Thiophosphates

Cited by 6 publications

References 17 publications

Syntheses, Structures, and VT NMR Studies of Diselenophosphates of Group 14 Organometals. DFT Calculations for Gas-Phase Stability of Dinuclear Ions, [(Ph₃M)₂{μ-Se, Se-P(OR)₂}]⁺(M = Ge, Sn, and Pb)

Syntheses, Structures, and VT NMR Studies of Diselenophosphates of Group 14 Organometals. DFT Calculations for Gas-Phase Stability of Dinuclear Ions, [(Ph₃M)₂{μ-Se, Se-P(OR)₂}]⁺(M = Ge, Sn, and Pb)

Reactions of dithioxo-1,3,2?5,4?5-dithiadiphosphetanes with triorganolead derivatives

New methods of synthesis of boron, germanium, and tin derivatives of pentavalent phosphorus thioacids

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Organogermanium(iv) O,o,alkylenedi-Thiophosphates

Cited by 6 publications

References 17 publications

Syntheses, Structures, and VT NMR Studies of Diselenophosphates of Group 14 Organometals. DFT Calculations for Gas-Phase Stability of Dinuclear Ions, [(Ph3M)2{μ-Se, Se-P(OR)2}]+(M = Ge, Sn, and Pb)

Syntheses, Structures, and VT NMR Studies of Diselenophosphates of Group 14 Organometals. DFT Calculations for Gas-Phase Stability of Dinuclear Ions, [(Ph3M)2{μ-Se, Se-P(OR)2}]+(M = Ge, Sn, and Pb)

Reactions of dithioxo-1,3,2?5,4?5-dithiadiphosphetanes with triorganolead derivatives

New methods of synthesis of boron, germanium, and tin derivatives of pentavalent phosphorus thioacids

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Product

Resources

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Syntheses, Structures, and VT NMR Studies of Diselenophosphates of Group 14 Organometals. DFT Calculations for Gas-Phase Stability of Dinuclear Ions, [(Ph₃M)₂{μ-Se, Se-P(OR)₂}]⁺(M = Ge, Sn, and Pb)

Syntheses, Structures, and VT NMR Studies of Diselenophosphates of Group 14 Organometals. DFT Calculations for Gas-Phase Stability of Dinuclear Ions, [(Ph₃M)₂{μ-Se, Se-P(OR)₂}]⁺(M = Ge, Sn, and Pb)