Über gemischte Gruppe 14—Gruppe 14-Bindungen

Schneider, Claudia; Dräger, Martin

doi:10.1016/0022-328x(91)80135-7

Cited by 35 publications

(7 citation statements)

References 22 publications

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“…The Pb À Pb distance of 3.1777(4) in 7 is longer than those of normal diplumbanes with Pb IV À Pb IV bonds (ca. 2.85 ), [33] but is comparable to those of plumbylene dimers (ca. 3.05 ).…”

Section: Wwwchemeurjorgmentioning

confidence: 50%

Synthesis, Structure, and Reactivity of Lewis Base Stabilized Plumbacyclopentadienylidenes

Saito

Akiba

Kaneko

et al. 2013

Chemistry A European J

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Plumbacyclopentadienylidenes, in which the lead atoms have divalent states and are coordinated by THF, pyridine and N-heterocyclic carbene, were synthesized and characterized. The THF- and pyridine-stabilized compounds can be regarded as rare examples of hypervalent 10-X-4 species. The equilibrium between the THF adduct and the free plumbacyclopentadienylidene was evidenced by spectroscopic analysis and theoretical calculations. The THF adduct in benzene converted into a plumbylene dimer, where one of the lead centers is coordinated by THF and the other lead atom is coordinated by a divalent lead atom, the dimer gradually decomposing into spiroplumbole. The THF adduct unexpectedly reacted with trifluoroborane and trichlorogallane to afford fluoroborole and chlorogallole, which are the first examples of non-annulated fluoroborole and gallole, respectively.

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“…The Pb À Pb distance of 3.1777(4) in 7 is longer than those of normal diplumbanes with Pb IV À Pb IV bonds (ca. 2.85 ), [33] but is comparable to those of plumbylene dimers (ca. 3.05 ).…”

Section: Wwwchemeurjorgmentioning

confidence: 50%

Synthesis, Structure, and Reactivity of Lewis Base Stabilized Plumbacyclopentadienylidenes

Saito

Akiba

Kaneko

et al. 2013

Chemistry A European J

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“…Because the tolyl groups are chemically similar throughout the series, the dominant effect is simply that of molecular size, which is dictated by the central atom. The smallest analogue, tetratolylmethane, C(C 6 H 4 CH 3 ) 4 (CTol 4 ) is, in fact, isostructural with the largest two of the series,4, 5 the stannane and plumbane analogues (all in space group I $\bar 4$ ), with the silane and germane species lying in the lower‐symmetry space group Pc 6 (Figure 1; CCDC references for all species are: CTol 4 : 712743, SiTol 4 : SUCZIZ, GeTol 4 : SUCZOF, SnTol 4 : PTOLSN, PbTol 4 : SOMMEM). The rationale behind this rather bizarre behavior is believed to lie in the contact interactions of the methyl groups on neighboring molecules.…”

Section: Introductionmentioning

confidence: 99%

Central‐Atom Size Effects on the Methyl Torsions of Group XIV Tetratolyls

Harper

Stampfl

et al. 2012

Chemistry A European J

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The Group XIV tetratolyl series X(C(6)H(4)-CH(3))(4) (X = C, Si, Ge, Sn, Pb) were studied by using inelastic neutron scattering to measure the low-energy phonon spectra to directly access the methyl-group torsional modes. The effect of increased molecular radius as a function of the size of the central atom was shown to have direct influence on the methyl dynamics, reinforced with the findings of molecular dynamics and contact surface calculations, based upon the solid-state structures. The torsional modes in the lightest analogue were found to be predominantly intramolecular: the Si and Ge analogues have a high degree of intermolecular methyl-methyl group interactions, whilst the heaviest analogues (Sn and Pb) showed pronounced intermolecular methyl interactions with the whole phonon bath of the lattice modes.

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“…The first has two RCOO" groups in a syn-syn arrangement bridging a pair of SnC 2 moieties [3][4][5][6]8]. The third group has no bridging ligands [9,11,[13][14][15]18,19,21,22,24,28], The third group has no bridging ligands [9,11,[13][14][15]18,19,21,22,24,28],…”

Section: Dimers Containing a Tin-tin Bondmentioning

confidence: 99%

“…In the third group of Sn 2 +6 derivatives, there are several examples with two tetrahedral tin atoms held together by a direct Sn-Sn bond; SnC 3 [9,11,[13][14][15]18,22,24,28], SnC 2 CI [13,22] and SnC 2 Br [18,21]. In another example [18a] two trigonal-bipyramidal units, SnC 2 NCI are linked, and overall the range of values for the Sn-Sn bond are from 275.9(4) to 303.…”

Section: Fig 1 Structure Of Sn 2^-ac) 2 (Ph) 4 [3] Fig 2 Structurmentioning

confidence: 99%

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Tin Organometallic Compounds: Classification and Analysis of Crystallographic and Structural Data: Part Ii. Dimeric Derivatives

Holloway¹,

Melnı́k²

2000

Main Group Metal Chemistry

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This review covers the crystallographic data of organotin compounds containing two tin centres, with a view to identifying correlations between properties and structure. Almost two hundred and fifty such compounds are included, of which almost thirty contain Sn 2 +6 units with a direct Sn-Sn bond, the shortest being 269.1(1) pm. There are ten compounds with tin in the +2 oxidation state, with a shortest Sn(ll)-Sn(ll) bond distance of 276.4(2) pm. The remainder of the compounds contain tin(IV), and the shortest Sn(IV)-Sn(IV) distance is 294 pm. The predominant geometries for tin(IV) are tetrahedral and trigonal bipyramidal. Distortion and cis-trans isomerism are found, the former being most common. In one example of distortion isomerism crystallographically independent molecules occur within the same unit. Several types of bridging are observed between the tin centres. Relationships between bond distances, ligand size and angles are discussed in the respective sections. The most common bridge donor atom is oxygen. The most common carbon donor ligands are phenyl and methyl groups.

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Über gemischte Gruppe 14—Gruppe 14-Bindungen

Cited by 35 publications

References 22 publications

Synthesis, Structure, and Reactivity of Lewis Base Stabilized Plumbacyclopentadienylidenes

Synthesis, Structure, and Reactivity of Lewis Base Stabilized Plumbacyclopentadienylidenes

Central‐Atom Size Effects on the Methyl Torsions of Group XIV Tetratolyls

Tin Organometallic Compounds: Classification and Analysis of Crystallographic and Structural Data: Part Ii. Dimeric Derivatives

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