Nature of the tin-tin double bond as studied by solid-state and solution nuclear magnetic resonance

Zilm, Kurt W.; Lawless, Gerard A.; Merrill, R. M.; Millar, J. M.; Webb, Gretchen G.

doi:10.1021/ja00257a080

Cited by 146 publications

(76 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…[a] [17] Ar 2 Sn´BH 3 [13] À 30 [b] À In the last few years we have been interested in the dipolar cycloaddition of nitrones with diiron acyl complexes. [1,2] This chemistry has been shown to be effective in the diastereo-and enantioselective addition of a variety of nitrones to mono-and disubstituted a,b-unsaturated acyl complexes.…”

Section: Andmentioning

confidence: 99%

Thermally Stable Heterobinuclear Bivalent Group 14 Metal Complexes Ar2M−Sn[1,8-(NR)2C10H6] (M=Ge, Sn; Ar=2,6-(Me2N)2C6H3; R=CH2tBu)

Drost¹,

Hitchcock²,

Läppert³

1999

Angew. Chem. Int. Ed.

View full text Add to dashboard Cite

The first thermally robust Ge(II) -Sn(II) compound 1 and the structurally characterized Sn(II) -Sn(II) analogue 2, which maintain their structural integrity in solution, were obtained by treating MAr2 (M=Ge, Sn; Ar=2,6-(Me2 N)2 C6 H3 ) with Sn[1,8-(NR2 )2 C10 H6 ] (R=CH2 tBu). On the basis of structural and spectroscopic data, the M-Sn bond is regarded as the interaction of a MAr2 donor with an Sn[1,8-(NR2 )2 C10 H6 ] acceptor.

show abstract

Section: Andmentioning

confidence: 99%

Thermally Stable Heterobinuclear Bivalent Group 14 Metal Complexes Ar2M−Sn[1,8-(NR)2C10H6] (M=Ge, Sn; Ar=2,6-(Me2N)2C6H3; R=CH2tBu)

Drost¹,

Hitchcock²,

Läppert³

1999

Angew. Chem. Int. Ed.

View full text Add to dashboard Cite

show abstract

“…Recently, however, there have been several reports of determination of the orientation of the shielding tensor from a single experiment (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14). This has been accomplished by studying an isolated spin pair where dipolar coupling exists between the two nuclei.…”

Section: Introductionmentioning

confidence: 99%

Phosphorus-31 solid-state nuclear magnetic resonance study of monophosphazenes

Power¹,

Wasylishen²,

Curtis³

1989

Can. J. Chem.

View full text Add to dashboard Cite

. Can. J. Chem. 67, 454 (1989).Simultaneous observation of anisotropic chemical shielding and dipolar coupling in polycrystalline monophosphazenes has been used to obtain information on the 3 '~-' 4~ spin pair. Phosphorus-31 chemical shielding tensor components have been determined; the most shielded component was found to lie along the P=N bond. The 3 '~-' 4~ dipolar coupling constants have provided P=N bond lengths from powder samples, equivalent for all compounds within experimental error; the value obtained for N-(triphenylphosphorany1idene)-aniline is in excellent agreement with that obtained in a recent X-ray diffraction study. Features of crystallographic significance have been determined from the solid-state nuclear magnetic resonances ectra for two of P4 the compounds without resorting to diffraction techniques. Information on the magnitude and orientation of the N electric field gradient tensor has been inferred from 3 1~ MAS spectra and ab initio calculations. 454 (1989). Dans le but d'obtenir de l'information sur la paire de spin 3 1 P -' 4~, on a observC simultanement le blindage chimique anisotropique et le couplage dipolaire de monophosphazknes polycristallins. On a determine les composantes du tenseur du blindage chimique du hosphore-3 1; la composante la plus blindCe se trouve le long de la liaison P=N. Utilisant les constantes de P couplages dipolaires P-I4N dkterminCes ?i partir d'tchantillons de poudres, on a pu Cvaluer les longueurs des liaisons P=N qui sont Cquivalentes pour tous les composCs, aux erreurs expkrimentales prks; la valeur obtenue pour la N-(triphCnylphospharanylidkne)-aniline est en excellent accord avec celle qui a t t t obtenue dans une ttude rCcente de diffraction des rayons-X. Sans recourir 2 des techniques de diffraction, mais en faisant appel ?i leurs spectres en resonance magnCtique nucltaire, on a pu determiner des caractkristiques cristallographiques importantes pour deux des composCs. En se basant sur les spectres MAS du

show abstract

“…In the bis(amino)stannylenes, the relative energies of electrons in Sn-N r bonds is lower and therefore, the energy difference between the ground states and the relevant excited states is larger, which causes a smaller contribution to the paramagnetic shielding term in the tin amides than in the organostannylenes where 119 Sn chemical shift values are in the range of 2000-2500 ppm [29]. Its mass spectral analysis shows a molecular ion peak with relative low intensity at m/z 444.…”

Section: Resultsmentioning

confidence: 99%

“…Diethyl ether and tetrahydrofuran were dried over sodium benzophenoneketyl and n-hexane was kept over sodium wire and distilled under nitrogen prior to use. All NMR spectra were obtained on a Jeol AL 300 MHz (FT NMR) apparatus using tetramethylsilane ( 1 H, 29 Si, 0 ppm), deuteriochloroform ( 13 C, 77.1 ppm) and teramethyltin ( 119 Sn, 0 ppm) as reference standards. The mass spectra on a Jeol Mstation JMS 700 or a Varian MAT CH7 spectrometer.…”

Section: Methodsmentioning

confidence: 99%

Silyl stabilized azanes: Reactions of mono- and dilithium bis(trimethylsilyl)hydrazide with dichloro- and tetrachlorostannane

Kataria

Mayer

Vasisht

et al. 2009

Journal of Organometallic Chemistry

View full text Add to dashboard Cite

Nature of the tin-tin double bond as studied by solid-state and solution nuclear magnetic resonance

Cited by 146 publications

References 2 publications

Thermally Stable Heterobinuclear Bivalent Group 14 Metal Complexes Ar2M−Sn[1,8-(NR)2C10H6] (M=Ge, Sn; Ar=2,6-(Me2N)2C6H3; R=CH2tBu)

Thermally Stable Heterobinuclear Bivalent Group 14 Metal Complexes Ar2M−Sn[1,8-(NR)2C10H6] (M=Ge, Sn; Ar=2,6-(Me2N)2C6H3; R=CH2tBu)

Phosphorus-31 solid-state nuclear magnetic resonance study of monophosphazenes

Silyl stabilized azanes: Reactions of mono- and dilithium bis(trimethylsilyl)hydrazide with dichloro- and tetrachlorostannane

Contact Info

Product

Resources

About