gERmaniUM cOmPOuNds cyCLIC

gERmaniUM cOmPOuNds cyCLIC

US10294252B2 - Cyclic germanium compounds and

US10294252B2 US14/406,777 US201314406777A US10294252B2 US 10294252 B2 US10294252 B2 US 10294252B2 US 201314406777 A US201314406777 A US 201314406777A US 10294252 B2 US10294252 B2 US 10294252B2 Authority US United States Prior art keywords germoles disclosure substituents aryl substituted Prior art date 2012-06-11 Legal status (The

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Germanium Compounds - an overview | ScienceDirect Topics

Germanium compounds containing dithiocarbonate 179 and dithiophosphate 180,181 ligands which have Ge–S bonds have been prepared and structurally characterized. Compounds containing germanium and other group 14 elements held together by chalcogenide bridges have been synthesized such as the heavy bicyclo[2.2.2]octane derivatives which contain

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Biologically Active Coordination Compounds of

2021-7-18 · Cyclic voltammetry using an ABC-1.1 voltammetric analyzer (Econiks) was used to evaluate functional activity of organogermanium complexes and identify elementary stages of the reduction in buffer solutions of oxygen to superoxide radical anion and of peroxide ion to water molecule, as well as particular steps in the reduction of intermediate compounds with partial

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Synthesis of germanium enolate polymers from germylene ...

1997-11-10 · A novel germanium containing polymer, poly (germanium enolate), has been synthesized by the reaction of a divalent germanium compound, germylene, with a cyclic α,β-unsaturated ketone in the presence of a catalytic amount of a lithium compound. The germylene was also copolymerized with a cyclic α,β-unsaturated lactone, affording an unstable ...

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Ge. Germanium (System-Nr. 45)

GeR4 Compounds and Ge(CH3) 3R Compounds up to Cyclic Alkyl Groups. Series: Gmelin Handbook of Inorganic and Organometallic Chemistry - 8th edition, Part G-e / 1-7 / 1. Subseries: Ge. Germanium (System-Nr. 45) Glockling, Frank Editor-in

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Germanium compounds and their use as a biocompatible

The present invention is a germanium compound having the following general formula I: ##STR1## in which n is a positive integer less than 50 when the general formula is linear and is between 3 and 50 when the general formula is cyclic, and preferably between 3 and 6, and the R radicals, which are identical or different, are chosen independently from hydrocarbyl radicals,

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Ge Organogermanium Compounds | SpringerLink

Mendeleeff's predictions of the properties of germanium and its compounds by comparison with what was known of the chemistry of its neighbors, silicon and tin, proved remarkably accurate and included predictions of the existence of organic derivatives GeR and of their properties. 4 Although significant applications are as yet lacking for ...

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Applications of Germanium Compounds - Gelest

2018-8-8 · Applications of Germanium Compounds Andrew E. Wille and Barry Arkles Gelest Inc. Germanium compounds have emerged as critically important materials in the fabrication of microelectronics, optics and sensors. Potential new applications in organic transformations and polymer synthesis have also been reported.

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Halometallate Complexes of Germanium(II) and (IV):

2017-9-29 · germanium and halide co-ligands have on a) the solid-state interactions between cation and anion; b) the spectroscopy and the cyclic voltammetry of the germanium salts in CH 2Cl 2 solution. Results and Discussion Chlorogermanate(IV) dianions: effect of the cation Other than [GeF 6] 2, halometallate anions of GeIV are rare.[14] In 1940, the ...

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Biologically Active Coordination Compounds of

2021-7-18 · Cyclic voltammetry using an ABC-1.1 voltammetric analyzer (Econiks) was used to evaluate functional activity of organogermanium complexes and identify elementary stages of the reduction in buffer solutions of oxygen to superoxide radical anion and of peroxide ion to water molecule, as well as particular steps in the reduction of intermediate compounds with partial

Read More

Germanium Compounds - an overview | ScienceDirect Topics

Germanium compounds containing dithiocarbonate 179 and dithiophosphate 180,181 ligands which have Ge–S bonds have been prepared and structurally characterized. Compounds containing germanium and other group 14 elements held together by chalcogenide bridges have been synthesized such as the heavy bicyclo[2.2.2]octane derivatives which contain

Read More

Synthesis of germanium enolate polymers from germylene ...

1997-11-10 · A novel germanium containing polymer, poly (germanium enolate), has been synthesized by the reaction of a divalent germanium compound, germylene, with a cyclic α,β-unsaturated ketone in the presence of a catalytic amount of a lithium compound. The germylene was also copolymerized with a cyclic α,β-unsaturated lactone, affording an unstable ...

Read More

Germanium compounds and their use as a biocompatible

The present invention is a germanium compound having the following general formula I: ##STR1## in which n is a positive integer less than 50 when the general formula is linear and is between 3 and 50 when the general formula is cyclic, and preferably between 3 and 6, and the R radicals, which are identical or different, are chosen independently from hydrocarbyl radicals,

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FLP-type nitrile activation and cyclic ether ring-opening ...

The results of these experiments show that the insertion of different cyclic ethers between the di-anionic cluster and several bromo-boranes corresponds to an easy route for Ge–C bond formation in [Ge 9] cluster chemistry . Additional NMR spectra (1 H, 11 B, 13 C, 29 Si) of compounds 2 to 5 are provided in the ESI.† Activation of CH 3 CN

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Phosphine-Stabilized Pnictinidenes

2021-7-22 · molecular cyclic germylene-phosphine adduct 1.[17] This low-valent germanium compound reacts through oxidative addition with element halides of Groups 13 and 14: BX 3 (X=Cl, Br), PhBCl 2 and GeCl 2. After reduction of these addition products double bonds between Ge=B and Ge=Ge were characterized.[17–18] In

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Applications of Germanium Compounds - Gelest

2018-8-8 · Applications of Germanium Compounds Andrew E. Wille and Barry Arkles Gelest Inc. Germanium compounds have emerged as critically important materials in the fabrication of microelectronics, optics and sensors. Potential new applications in organic transformations and polymer synthesis have also been reported.

Read More

Halometallate Complexes of Germanium(II) and (IV):

2014-3-18 · Attempts to form analogous halometallates of germanium(IV) with bromide or iodide were unsuccessful, with the starting materials being recovered in all cases. Cyclic voltammograms of the Ge IV salts were obtained at a concentration of 5.0 m M in CH 2 Cl 2 with 100.0 m M supporting electrolyte and 500 μ M of ferrocene (Figure 4 and Table 1).

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Electrodeposition of germanium at elevated temperatures ...

Electrodeposition at elevated temperatures leads to higher deposition rates due to: (1) increase in the diffusion rate of the electroactive germanium compounds; (2) faster electrochemical kinetics in the electrolyte; and (3) higher electrical conductivity of the electrodeposited germanium film.

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Germanium Dioxide and the Antioxidant Properties of ...

Cyclic voltammetry was used to estimate the oxidation potentials of thioethers in acetonitrile. The electrooxidation of compounds at the first stage leads to the formation of o-benzoquinones ...

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Preparation and properties of some cyclic germanium 1,4 ...

Abstract Colourless liquids of cyclic compounds of the type: have been prepared by reactions of dibutylgermanium dichloride with cis-1,4-cyclohexanediol or cis,cis,cis-2,5-di-tert-butyl-l,4-cyclohexanediol, in benzene in the presence of a hydrogen halide acceptor. Under similar conditions germanium tetrachloride gave solid products of the type: Physical and

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Stable N‐Heterocyclic Carbene Complexes of

A selective route: Hypermetallyl germanium(II) and tin(II) compounds (see scheme) were prepared using dimetallyl magnesium reagents and were fully characterized. These derivatives, which contain good leaving substituents, might be suitable candidates for the preparation of nanomaterial alloys.

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Ge. Germanium (System-Nr. 45)

GeR4 Compounds and Ge(CH3) 3R Compounds up to Cyclic Alkyl Groups. Series: Gmelin Handbook of Inorganic and Organometallic Chemistry - 8th edition, Part G-e / 1-7 / 1. Subseries: Ge. Germanium (System-Nr. 45) Glockling, Frank Editor-in

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Isolation of Transient Acyclic Germanium(I) Radicals ...

2019-1-11 · Isolation of Transient Acyclic Germanium(I) Radicals Stabilized by Cyclic Alkylamino Carbenes Journal of the American Chemical Society ( IF 15.419) Pub Date : 2019-01-11, DOI: 10.1021/jacs.8b13434

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Halometallate Complexes of Germanium(II) and (IV):

2017-9-29 · germanium and halide co-ligands have on a) the solid-state interactions between cation and anion; b) the spectroscopy and the cyclic voltammetry of the germanium salts in CH 2Cl 2 solution. Results and Discussion Chlorogermanate(IV) dianions: effect of the cation Other than [GeF 6] 2, halometallate anions of GeIV are rare.[14] In 1940, the ...

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A novel metal‐containing polymer: Poly(germanium

1993-1-1 · Recently, studies on the formation of cyclic germanium enolates from a germylene and various, cr,&unsaturated carbonyl compounds having s-cis structure have been reported.[61In the course of our investigation aimed at devel,-a N(SiMe,), oping new polymer materials based on the concept of I " r e "oxidation-reduction ~opolymerization",~~~ we ...

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Electrodeposition of germanium at elevated temperatures ...

Electrodeposition at elevated temperatures leads to higher deposition rates due to: (1) increase in the diffusion rate of the electroactive germanium compounds; (2) faster electrochemical kinetics in the electrolyte; and (3) higher electrical conductivity of the electrodeposited germanium film.

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Analysis of germanium hydride molecular clusters ...

2011-1-28 · Germanium in hydrides was revealed to be not only four-coordinated but to sometimes form only two bonds in linear chain or cyclic structures. The planar digermene H 2 Ge = GeH 2 form is the transition state in the interconversion of the germylgermylene H 3 Ge–GeH structure, which was found to correspond to minimum enthalpy [ 5 ].

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Solvolytic reactions and cyclic inorganic compounds

Solvolytic reactions and cyclic inorganic compounds In inorganic chemistry , the most widely encountered cyclic compounds are those based on repeating units of two different elements (alternant heterocyclic compounds). A general method for the preparation of such compounds is the so l voly s is of non-metallic compounds

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"Synthesis and Characterization of Luminescent Cyclic ...

The vision in the field of organic electronics is the realization of flexible, easily manufactured, low cost optoelectronics for use in organic light emitting diodes (OLEDs) for large area displays and lighting applications, organic photovoltaic cells, and organic field-effect transistors. The active layers within such devices are composed of semiconducting small molecules or polymers.

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