Structure of tetramethyltin, Sn(CH3)4

Krebs, Bernt; Henkel, Gerald; Dartmann, M.

doi:10.1107/s0108270189000090

Cited by 17 publications

(11 citation statements)

References 2 publications

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“…In contrast, tetraorganotin complexes such as SnMe4 are tetrahedral, electronprecise structures that are not moisture sensitive. 35 While Sn(IV) is the more stable oxidation state, a range of more reactive Sn(II) organometallic and metal-amide complexes are also known. In contrast to s-block organometallics, transition metal organometallics display an increase in the M−C bond covalency and strength down a triad, 36 arising from the involvement of dorbitals in the M−C bonding -thus third row organometallics are typically less reactive than their first and second row analogues.…”

Section: Figmentioning

confidence: 99%

Hydrolysis of organometallic and metal–amide precursors: synthesis routes to oxo-bridged heterometallic complexes, metal-oxo clusters and metal oxide nanoparticles

Garden

Pike

2018

Dalton Trans.

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The hydrolysis reaction between Brønsted basic organometallic or metal-amide reagents with Brønsted acidic OH groups from water or metal-hydroxides may act as a controlled stoichiometric strategy for the formation of M-O-M bonds, if careful consideration of reaction conditions is employed. This article explores the utilisation of highly reactive organometallic and metal-amide complexes from across the periodic table as reagents for the synthesis of metal-oxo clusters, oxo-bridged heterobimetallics and metal oxide nanoparticles. Such reactivity typically occurs at low temperatures with the release of hydrocarbon or amine by-products. The impact of ligand coordination, M-C bond strength, M-OH acidity and reaction temperature are discussed.

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Section: Figmentioning

confidence: 99%

Hydrolysis of organometallic and metal–amide precursors: synthesis routes to oxo-bridged heterometallic complexes, metal-oxo clusters and metal oxide nanoparticles

Garden

Pike

2018

Dalton Trans.

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“…The opposite situation occurs for tetramethyl tin, where the compression of the molecule along the threefold axis postulated on the basis of the tunnel spectrum 6 9 has been confmned by diffraction measurements. 88 Figure 4 further shows a typical temperature evolution of a tunnelling spectrum, the lines broadening as they shift towards the elastic line (see eq. ( 17)).…”

Section: Methyl Tunnelling: Nitromethane and Tetramethylleadmentioning

confidence: 99%

Rotational Tunnelling Spectroscopy With Neutrons

Carlile

Prager

1993

Int. J. Mod. Phys. B

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Neutron tunnelling spectroscopy has been a very fruitful field for almost two decades and is still expanding into new areas, both experimentally and theoretically. The development of the topic is reviewed from the theoretical point of view, highlighting new approaches, and selected examples of more recent experimental work are presented. A brief discussion of instrument performance and experimental requirements is given.

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“…316 K) no crystal structure investigations have been reported and only one modification was observed in the temperature range 15-300 K (Valerga & Kilpatrick, 1969). The higher homologous Sn(CH 3 ) 4 and Pb(CH 3 ) 4 each crystallize in the cubic space group Pa3 with Z ¼ 8, with the molecules on threefold axes (Krebs et al, 1989;Fleischer et al, 2003). For neopentane, C(CH 3 ) 4 , a cubic modification at 223 K and a tetragonal modification at 123 K could be found (Mones & Post, 1952).…”

Section: Introductionmentioning

confidence: 99%

Predicted crystal structures of tetramethylsilane and tetramethylgermane and an experimental low-temperature structure of tetramethylsilane

Wolf

Glinnemann

Fink

et al. 2010

Acta Crystallogr Sect B

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No crystal structure at ambient pressure is known for tetramethylsilane, Si(CH(3))(4), which is used as a standard in NMR spectroscopy. Possible crystal structures were predicted by global lattice-energy minimizations using force-field methods. The lowest-energy structure corresponds to the high-pressure room-temperature phase (Pa3, Z = 8). Low-temperature crystallization at 100 K resulted in a single crystal, and its crystal structure has been determined. The structure corresponds to the predicted structure with the second lowest energy rank. In X-ray powder analyses this is the only observed phase between 80 and 159 K. For tetramethylgermane, Ge(CH(3))(4), no experimental crystal structure is known. Global lattice-energy minimizations resulted in 47 possible crystal structures within an energy range of 5 kJ mol(-1). The lowest-energy structure was found in Pa3, Z = 8.

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Structure of tetramethyltin, Sn(CH3)4

Cited by 17 publications

References 2 publications

Hydrolysis of organometallic and metal–amide precursors: synthesis routes to oxo-bridged heterometallic complexes, metal-oxo clusters and metal oxide nanoparticles

Hydrolysis of organometallic and metal–amide precursors: synthesis routes to oxo-bridged heterometallic complexes, metal-oxo clusters and metal oxide nanoparticles

Rotational Tunnelling Spectroscopy With Neutrons

Predicted crystal structures of tetramethylsilane and tetramethylgermane and an experimental low-temperature structure of tetramethylsilane

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