Activation of Nitriles by Trichloro[2‐(dialkylphosphanyl)imidazol‐1‐yl]silanes – Synthesis and Characterization of New Dinuclear Pentacoordinate Silicon(IV) Complexes with Bridging Imido‐Nitrogen Ligand Atoms

doi:10.1002/EJIC.201101041

Paper

Activation of Nitriles by Trichloro[2‐(dialkylphosphanyl)imidazol‐1‐yl]silanes – Synthesis and Characterization of New Dinuclear Pentacoordinate Silicon(IV) Complexes with Bridging Imido‐Nitrogen Ligand Atoms

Published 2012 · Konstantin Junold, C. Burschka, R. Tacke

European Journal of Inorganic Chemistry

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Abstract

Trichloro[2-(dialkylphosphanyl)imidazol-1-yl]silanes 3 and 4 react with aceto- or propionitrile to yield the dinuclear pentacoordinate silicon(IV) complexes 5–8, which contain two bridging dianionic N,N-ligands generated by silicon-mediated nitrile activation. Compounds 5–8 contain two SiCl2N3 skeletons, with two imido-nitrogen ligand atoms that bridge the silicon coordination centers. The pentacoordinate silicon(IV) complexes 5–8 were characterized by elemental analysis, single-crystal X-ray diffraction, and solid-state NMR spectroscopy.

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Trichloro[2-(dialkylphosphanyl)imidazol-1-yl]silanes activate nitriles to produce dinuclear pentacoordinate silicon(IV) complexes with bridging imido-nitrogen ligands.

PopulationOlder adults (50-71 years)

Sample size24

MethodsObservational

OutcomesBody Mass Index projections

ResultsSocial networks mitigate obesity in older groups.

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Paper

Activation of Nitriles by Trichloro[2‐(dialkylphosphanyl)imidazol‐1‐yl]silanes – Synthesis and Characterization of New Dinuclear Pentacoordinate Silicon(IV) Complexes with Bridging Imido‐Nitrogen Ligand Atoms

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References

Novel neutral hexacoordinate benzamidinatosilicon(IV) complexes with SiN3OF2, SiN3OCl2, SiN3OBr2, SiN5O and SiN3O3 skeletons.

Neutral hexacoordinate silicon(IV) complexes with novel SiN3OF2, SiN3OCl2, SiN3OBr2, SiN5O, and SiN3O3 skeletons were synthesized and characterized.

Novel neutral hexacoordinate silicon(IV) complexes with two bidentate monoanionic benzamidinato ligands.

Novel neutral hexacoordinate silicon(IV) complexes with two bidentate monoanionic benzamidinato ligands show potential for syntheses of Si-Se bonds, demonstrating the feasibility of such complexes.

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Pentacoordination in silicon(IV) complexes with an SiSONCX skeleton is favored by Br>Cl>F, with increasing the softness of the halogeno ligand favoring pentacoordination.

Neutral penta- and hexacoordinate silicon(IV) complexes containing two bidentate ligands derived from the alpha-amino acids (S)-alanine, (S)-phenylalanine, and (S)-tert-leucine.

The neutral silicon(IV) complexes 6 and 7-11 contain two bidentate ligands derived from (S)-alanine, (S)-phenylalanine, and (S)-tert-leucine, which can be used as ligands in various organic compounds.

Multimodal study of secondary interactions in Cp*Ir complexes of imidazolylphosphines bearing an NH group.

Cp*Ir complexes of imidazolylphosphines show stronger hydrogen bonding to chloride than hydride, highlighting the difficulty in determining structure and dynamics of hemilabile, bifunctional complexes.

Hypercoordinate silicon complexes based on hydrazide ligands. A remarkably flexible molecular system.

Hypercoordinate silicon compounds with two hydrazide-derived chelate rings exhibit structural flexibility, diverse chemical reactivity, and intermolecular ligand crossovers, offering potential for organic synthesis.

Optically active zwitterionic lambda(5)Si,lambda(5)Si'-disilicates: syntheses, crystal structures, and behavior in aqueous solution.

Zwitterionic lambda(5)Si,lambda(5)Si'-disilicates show remarkable stability in aqueous solution, despite their SiO(4)C skeletons.

NH-functionalized tungsten complexes of 2-(dimethylphosphino)imidazole

NH-functionalized tungsten complexes of 2-(dimethylphosphino)imidazole can be synthesized using various ligand substitution methods, leading to stable compounds with unique structures.

Citations

A family of 1,1,1,2,2,2-hexa(-primary-)amino-disilanes as potential CVD precursors: Tuning thermal properties by small variation of the substituent

The 1,1,1,2,2,2-hexaamino-disilanes show potential as CVD precursors for silicon-based films, with their thermal properties being tuned by small variations in substituents.

Synthesis, structure and reactivity of a donor-stabilised silylene with a bulky bidentate benzamidinato ligand.

The novel donor-stabilised silylene with a bulky bidentate benzamidinato ligand shows promising reactivity in various complex reactions, offering potential applications in organic synthesis.

Synthesis, Characterization, Thermal Property of Si(c-C5H9NH)4 and Its Potential as CVD Precursor for SiC Film†

Silicon(IV) amides show promise as single-precursors for low-temperature SiC film deposition through low-pressure chemical vapor deposition.

Synthesis, Characterization, and Thermal Properties of Chlorine‐Containing 1,1,2,2‐Tetraaminodisilanes and Their Potential as Chemical Vapor Deposition Precursors for Silicon Nitride Films

Chlorine-containing 1,1,2,2 tetraaminodisilanes show potential as chemical vapor deposition precursors for silicon nitride films, with suitable thermal properties and CVD deposition results.

Selective C–H Bond Activation of 1,2‐Dicarba‐closo‐dodecaborane by the Donor‐Stabilized Silylene Bis[N,N′‐diisopropylbenzamidinato(–)]silicon(II)

Donor-stabilized silylene 1 can activate 1,2-dicarba-closo-dodecaborane to form neutral six-coordinate silicon(IV) complexes with carboranyl ligands, which can then undergo selective Si-C bond cleavage to form cyanomethyl

Activation of Nitriles by Trichloro[2‐(dialkylphosphanyl)imidazol‐1‐yl]silanes – Synthesis and Characterization of New Dinuclear Pentacoordinate Silicon(IV) Complexes with Bridging Imido‐Nitrogen Ligand Atoms

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References

Novel neutral hexacoordinate benzamidinatosilicon(IV) complexes with SiN3OF2, SiN3OCl2, SiN3OBr2, SiN5O and SiN3O3 skeletons.

Neutral hexacoordinate silicon(IV) complexes with novel SiN3OF2, SiN3OCl2, SiN3OBr2, SiN5O, and SiN3O3 skeletons were synthesized and characterized.

Novel neutral hexacoordinate silicon(IV) complexes with two bidentate monoanionic benzamidinato ligands.

Novel neutral hexacoordinate silicon(IV) complexes with two bidentate monoanionic benzamidinato ligands show potential for syntheses of Si-Se bonds, demonstrating the feasibility of such complexes.

Neutral pentacoordinate halogeno- and pseudohalogenosilicon(IV) complexes with an SiSONCX skeleton (X=F, Cl, Br, I, N, C): synthesis and structural characterization in the solid state and in solution.

Pentacoordination in silicon(IV) complexes with an SiSONCX skeleton is favored by Br>Cl>F, with increasing the softness of the halogeno ligand favoring pentacoordination.

Neutral penta- and hexacoordinate silicon(IV) complexes containing two bidentate ligands derived from the alpha-amino acids (S)-alanine, (S)-phenylalanine, and (S)-tert-leucine.

The neutral silicon(IV) complexes 6 and 7-11 contain two bidentate ligands derived from (S)-alanine, (S)-phenylalanine, and (S)-tert-leucine, which can be used as ligands in various organic compounds.

Multimodal study of secondary interactions in Cp*Ir complexes of imidazolylphosphines bearing an NH group.

Cp*Ir complexes of imidazolylphosphines show stronger hydrogen bonding to chloride than hydride, highlighting the difficulty in determining structure and dynamics of hemilabile, bifunctional complexes.

Hypercoordinate silicon complexes based on hydrazide ligands. A remarkably flexible molecular system.

Hypercoordinate silicon compounds with two hydrazide-derived chelate rings exhibit structural flexibility, diverse chemical reactivity, and intermolecular ligand crossovers, offering potential for organic synthesis.

Optically active zwitterionic lambda(5)Si,lambda(5)Si'-disilicates: syntheses, crystal structures, and behavior in aqueous solution.

Zwitterionic lambda(5)Si,lambda(5)Si'-disilicates show remarkable stability in aqueous solution, despite their SiO(4)C skeletons.

NH-functionalized tungsten complexes of 2-(dimethylphosphino)imidazole

NH-functionalized tungsten complexes of 2-(dimethylphosphino)imidazole can be synthesized using various ligand substitution methods, leading to stable compounds with unique structures.

Citations

A family of 1,1,1,2,2,2-hexa(-primary-)amino-disilanes as potential CVD precursors: Tuning thermal properties by small variation of the substituent

The 1,1,1,2,2,2-hexaamino-disilanes show potential as CVD precursors for silicon-based films, with their thermal properties being tuned by small variations in substituents.

Synthesis, structure and reactivity of a donor-stabilised silylene with a bulky bidentate benzamidinato ligand.

The novel donor-stabilised silylene with a bulky bidentate benzamidinato ligand shows promising reactivity in various complex reactions, offering potential applications in organic synthesis.

Synthesis, Characterization, Thermal Property of Si(c-C5H9NH)4 and Its Potential as CVD Precursor for SiC Film†

Silicon(IV) amides show promise as single-precursors for low-temperature SiC film deposition through low-pressure chemical vapor deposition.

Synthesis, Characterization, and Thermal Properties of Chlorine‐Containing 1,1,2,2‐Tetraaminodisilanes and Their Potential as Chemical Vapor Deposition Precursors for Silicon Nitride Films

Chlorine-containing 1,1,2,2 tetraaminodisilanes show potential as chemical vapor deposition precursors for silicon nitride films, with suitable thermal properties and CVD deposition results.

Selective C–H Bond Activation of 1,2‐Dicarba‐closo‐dodecaborane by the Donor‐Stabilized Silylene Bis[N,N′‐diisopropyl­benzamidinato(–)]silicon(II)

Donor-stabilized silylene 1 can activate 1,2-dicarba-closo-dodecaborane to form neutral six-coordinate silicon(IV) complexes with carboranyl ligands, which can then undergo selective Si-C bond cleavage to form cyanomethyl

Selective C–H Bond Activation of 1,2‐Dicarba‐closo‐dodecaborane by the Donor‐Stabilized Silylene Bis[N,N′‐diisopropylbenzamidinato(–)]silicon(II)