Organozinnverbindungen, V. Über Diäthylzinn

Neumann, Wilhelm P.; Pedain, J.

doi:10.1002/jlac.19646720103

Cited by 34 publications

(10 citation statements)

References 33 publications

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“…1852 with the report by Lowig(50) of the reaction of ethyl iodide with tinsodium alloy. A product of this reaction, a diethyl tin, has only very recently been characterized(51)(52)(53), A similar situation may be cited in the case of tetrakis (triphenylstannyl)tin, which was prepared as early as 192 3(54), but was not rigorously identified until the present study. This com pound is the only discrete branched chain polytin in the literature at present.…”

supporting

confidence: 53%

“…In an interesting extension of the above reactions, diorganotin dihydride s have been treated with amines to obtain cyclic polytin com pounds (51,52,56,93). In one reported case (52) a 94% yield of octadecaethylcyclononatin was obtained from diethyltin dihydride and a pyridine-diethyltin dichloride complex.…”

Section: Methods Of Preparationmentioning

confidence: 99%

“…The chemistry of catenated organotin compounds began as early as A particularly active area of investigation is that concerned with the nature of "divalent" tin species, R2Sn, It has now been well established that these compounds are in many cases polymers of the R2Sn structure, and do not, in fact, contain tin species in the divalent stateo Some diorganotin compounds, particularly those prepared from organolithium or organomagnesium reagents and stannous chloride, have been shown (52,53,(56)(57)(58) to correspond to RgSn compounds only in gross composition, and to contain tin polymers with chain branching, so that RgSn-and RSn= moieties are present in the compounds, A review (53) of the nature of these compounds and the problems involved in their study has recently appeared, so that the present writing will in the main treat only those compounds which have been shown to be reasonably discrete species.…”

Section: Organic Polytin Compoundsmentioning

confidence: 99%

“…It is reasonable that the same explanation is applicable in the case of the tin-tin bond. Ultraviolet spectra of hexaethylditin (103) and octadecaethylcyclononatin (52) have been reported, but without extinction coefficients. The ultraviolet absorption of diethyltin (from pyrolysis of the ditin, degree of polymerization not known) is thought to occur at higher wavelength than hexaethylditin.…”

Section: H Hmentioning

confidence: 99%

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Comparisons of organic Group IVB lithium compounds

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Cleavages with lithium 40 Benzyloxytriphenylsilane 40 (Diph enylm e thoxy) triph eny 1 s ilan e 41 2-Cyclohexen-1-yloxytriphenylsilane 42 Crotyloxytriphenylsilane 42 Relative Reactivities of Group IVB Lithium Compounds 43 Reactions of triphenyltinlithium With pyridine With azobenzene With 4,4 '-bis (dimethylamino)benzophenone With benzophenone Competitive reactions for _n-butyl chloride Reaction-with iodobenzene 63 Reaction with trimethyl phosphate 64 Reaction with hexaphenyldisilane (attempted) 64 Methyldiphenyltinlithium 65 Preparation of methyltriphenyltin 65 From triphenyltin chloride and methyl-65 lithium (attempted) From triphenyltinlithium and trimethyl 65 phosphate Methyldiphenyltin chloride 66 From methyltriphenyltin and hydrogen • 66 chloride From methyltriphenyltin and chlorine From methyltriphenyltin and iodine followed by hydrolysis and treatment with hydro chloric acid Preparation of reagent 68 Stability in tetrahydrofuran Reaction with trimethyl phosphate Dimethylphenyltinlithium 69 Preparation of starting materials 69 Dim ethyldiph enyltin 69 Dimethylphenyltin chloride Preparation of reagent Branched Chain Polytin Compounds Preparations of tetrakis(triphenylstannyl)tin From triphenyltinlithium and stannous chloride followed by triphenyltin chloride vi

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supporting

confidence: 53%

Section: Methods Of Preparationmentioning

confidence: 99%

Section: Organic Polytin Compoundsmentioning

confidence: 99%

Section: H Hmentioning

confidence: 99%

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Comparisons of organic Group IVB lithium compounds

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“…12,16 The Sn-Sn bonds found in some distannanes are cleaved by several reagents and oxidized by air. 7,11,17,18 They can also be cleaved by transition metals via oxidative addition and transmetallation. 19 Additionally, Sn-Sn bond cleavage has also been applied to generate stannyl radicals due to their small bond dissociation energy (Δ(Sn-Sn) = 187 kJ mol −1 ).…”

Section: Introductionmentioning

confidence: 99%

The synthesis and structure of a dianionic species with a bond between pentacoordinated tin atoms: bonding properties of the tin–tin bond

et al. 2016

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The first dianionic compound bearing a bond between two pentacoordinated tin atoms, a distannate, was synthesized in a stable form by using two sets of an electron-withdrawing C,O-bidentate ligand on each tin atom. The structure of the distannate was determined by NMR spectroscopy and X-ray crystallographic analysis. The Sn-Sn bond of the distannate was shown to be a single bond featuring high s-character. The J(Sn-Sn) coupling constant was larger than that of Sn(sp)-Sn(sp) bonds found in most hexaorganodistannanes. This bond feature was also supported by computational studies. The Sn-Sn bond was cleaved by treatment with hydrochloric acid, which shows a different reactivity to the homonuclear bonds of pentacoordinated disilicates and digermanates.

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Inorganic Ring Systems

Haiduc

2005

Encyclopedia of Inorganic Chemistry

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Inorganic rings of various types can be formed as a result of the broad range of bond types available. Cyclic structures formed by self‐assembly of molecular building units (tectons) are discussed in terms of supramolecular chemistry concepts. The formation of covalent rings can be understood in terms of combining various fragments (synthons) in which the central atoms can display various oxidation states, coordination numbers, and geometries, leading to a broad structural diversity of cyclic structures for a given composition of the ring skeleton (as illustrated for P 2 N 2 and Si 2 N 2 rings).

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Organozinnverbindungen, V. Über Diäthylzinn

Cited by 34 publications

References 33 publications

Comparisons of organic Group IVB lithium compounds

Comparisons of organic Group IVB lithium compounds

The synthesis and structure of a dianionic species with a bond between pentacoordinated tin atoms: bonding properties of the tin–tin bond

Inorganic Ring Systems

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