Reduction of C,N-chelated Diorganotin(IV) Dichlorides

Turek, Jan; Padělková, Zdeňka; Nechaev, Mikhail S.; Růžička, Aleš

doi:10.1016/j.jorganchem.2010.04.019

Cited by 17 publications

(8 citation statements)

References 34 publications

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“…The SneCl distances (Table 2) are also comparable to those found in tetranuclear compound published by us very recently, where also terminal and bridging SneCl bonds are present [25].…”

Section: Resultssupporting

confidence: 88%

Aminostannanes and aminostannylenes containing a C,N-chelated ligand

Padělková

Havlik

Nechaev

et al. 2010

Journal of Organometallic Chemistry

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“…The SneCl distances (Table 2) are also comparable to those found in tetranuclear compound published by us very recently, where also terminal and bridging SneCl bonds are present [25].…”

Section: Resultssupporting

confidence: 88%

Aminostannanes and aminostannylenes containing a C,N-chelated ligand

Padělková

Havlik

Nechaev

et al. 2010

Journal of Organometallic Chemistry

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“…A set of 119 Sn/ 117 Sn satellites ( 1 J = 4381 Hz) was displayed that is within reason for a polymer with adjacent tins atoms. 32 Polymer 5 was also characterized by 13 C NMR (C 6 D 6 ) spectroscopy, which showed four broad chemical shifts for the main chain. These chemical shifts were identified as the cyclopentadienyl carbons at 74.5, 71.1, and 69.3 (for the ipso-C) ppm and a methyl shift at -8.8 ppm.…”

Section: Nmr Characterizationmentioning

confidence: 99%

Synthesis and characterization of a polyferrocenyldistannane

et al. 2014

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The distannyl-bridged poly bis(dimethylstannyl)ferrocene, 5, was synthesized through either the metal-catalyzed intermolecular dehydrogenative condensation of the bis(dimethylstannyl)ferrocene, 6, or the ring-opening polymerization of the distannane-bridged [2]ferrocenophane, 7. Both polymerization strategies yielded compounds displaying NMR ( 1 H, 13 C, 119 Sn) evidence for a distannane bridged polymer. A modest moderate molecular weight (GPC; M w = 9.5 × 10 4 Da, PDI = 1.76) was found for polymer 5 prepared by dehydrogenative condensation. Polymer 5 displayed electronic communication (≈ 0.2 V) between neighbouring iron centers, similar to those reported for monobridged ferrocenyl stannane polymers. Polymer 5 was further characterized by UV-vis spectroscopy, elemental analysis, and modeled with the related distannyl-8 and tristannyl-9 bisferrocenes using DFT at the SDD level of theory.Résumé : Le poly[bis(diméthylstannyl)ferrocène] distannyl-ponté, 5, a été synthétisé soit par condensation déshydrogénative intermoléculaire métallo-catalysée du bis(diméthylstannyl)ferrocène, 6, soit par polymérisation par ouverture de cycle du [2]ferrocénophane distannane-ponté, 7. Ces deux modes de polymérisation ont produit des composés dont l'analyse par RMN ( 1 H, 13 C, 119 Sn) a fourni les preuves de l'existence d'un polymère distannane-ponté. On a découvert que le poids moléculaire du polymère 5 produit par condensation déshydrogénative était modérément faible (résultats de la chromatographie par perméa-tion de gel (GPC) : M w = 9,5 × 10 4 Da et index de polydispersité (PDI) = 1.76). Le polymère 5 laisse apparaître des communications électroniques (≈ 0.2 V) entre centre ferriques voisins semblable à celles observées sur les polymères de polymères de ferrocényl stannane monopontés. Le polymère 5 a été caractérisé en détail par spectroscopie UV-visible et par analyse élémentaire et modelisé à l'aide des distanyl-(8) et tristannyl-(9) bisferrocènes en utilisant la théorie de la fonctionnelle de la densité (DFT) au niveau de théorie SDD. [Traduit par la Rédaction]

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“…In accordance with Bent's rule, [31] the more electronegative atoms X (X N and Cl) occupy axial positions, and a slightly more electropositive sulfur atom and two carbon atoms are situated in equatorial positions. The interatomic distances Sn1-S1 [2.4520(11) Å] and Sn1-N1 [2.420(3) Å] differ (0.05 Å) from distances in compounds containing covalent Sn-S bond(s) [32,33] and are significantly shorter than the sum of the van der Waals radii for Sn and N atoms (3.97 Å). [34] This is evidently a consequence of the presence of only one S,N-chelating ligand bonded to the tin atom.…”

Section: Solid-state Studymentioning

confidence: 99%

“…The S1 atom is in the cis position to the S2 atom as well as the N1 atom is in the cis position to the N3 atom. Both Sn-S interatomic distances [Sn1-S1 2.5170(12) and Sn1-S2 2.5039(14) Å, respectively] are about 0.05-0.1 Å longer when compared with corresponding distances in 2 and published compounds containing covalent Sn-S bond(s), [32,33] which is apparently caused by the intramolecular N → Sn interaction. Also the interatomic distances Sn1-N1 2.581(3) Å and Sn1-N3 2.637(3) Å are longer than the corresponding distances in 2 [Sn1-N1 2.420(3) Å] discussed above.…”

Section: Solid-state Studymentioning

confidence: 99%