Die erste Kristallstruktur eines Germanium(II)-amids mit Germanium-Lithium-Bindung und deren Verhalten gegenüber Sauerstoff und Wasser

Veith, Michael; Schütt, Oliver; Hüch, Volker

doi:10.1002/(sici)1521-3757(20000204)112:3<614::aid-ange614>3.3.co;2-m

Cited by 2 publications

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“…However, Ge(II) compounds can be stabilized kinetically by sterically demanding ligands and/or thermodynamically by inter- and intramolecular coordination. Indeed, numerous nitrogen-containing bulky ligands have been used to stabilize these compounds. − Very recently, the chelating β -diketiminato ligands [HC(CMeNR) 2 ] - (R = Ph, 2,4,6-Me 3 C 6 H 2 , 2,6- i Pr 2 C 6 H 3 − ), where steric flexibility is afforded by variation of the substituents on the ligand backbone, were used to good advantage in the synthesis of such compounds.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Structures, and Reactivity of Alkylgermanium(II) Compounds Containing a Diketiminato Ligand

Ding

Roesky

et al. 2002

Organometallics

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Reaction of [HC(CMeNAr)2]GeCl (Ar = 2,6-iPr2C6H3) with RLi (R = Me, nBu) in diethyl ether at −78 °C yielded the alkylgermanium(II) compounds [HC(CMeNAr)2]GeR (R = Me (5), nBu (6)), which are monomeric with a three-coordinate germanium center. Compound 5 was oxidized with sulfur and selenium to afford [HC(CMeNAr)2]GeMe(E) (E = S (7), Se (8)), in which a terminal GeE double bond is present. Treatment of 5 with trimethylsilyl azide in hexane at room temperature gave [HC(C(CH2)NAr)CMeNAr]GeMe(N(H)SiMe3) (9), containing a Ge−N single bond; the expected compound [HC(CMeNAr)2]GeMe(NSiMe3) with a GeN double bond was not observed. The latter reaction proceeds with migration of a hydrogen atom from a methyl group of the ligand backbone to the nitrogen atom bonded to the silicon atom with formation of a methylene moiety. X-ray structural data are provided for 5, 6, 8, and 9.

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Section: Introductionmentioning

confidence: 99%

Synthesis, Structures, and Reactivity of Alkylgermanium(II) Compounds Containing a Diketiminato Ligand

Ding

Roesky

et al. 2002

Organometallics

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“…147,[150][151][152][153] Although Ge(IV) fluorides are common, substituted Ge(II) fluorides are quite rare and have been studied only as reactive intermediates. Treatment of 33 and 34 with Me 3 SnF, respectively, in dichloromethane at ambient temperature for two days smoothly affords the corresponding fluorides [CH(CMeNAr) 2 ]GeF [Ar = 2,6-iPr 2 C 6 H 3 (35), 2,6-Me 2 C 6 H 3…”

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confidence: 99%

Interstellar molecules: guides for new chemistry

2010

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Interstellar space is among the most remarkable chemical laboratories in the universe. The existence of many unstable species with low-valent main group elements in the interstellar medium inspired us to investigate the feasibility of laboratory synthesis of such unstable molecules. Particularly the lighter Group 14 element carbon plays a very important role in space astrochemistry. Low-valent carbon as well as silicon were detected in the interstellar environment. This article describes our recent efforts in developing amazing chemistry of heavier low-valent Group 14 elements. This study unravels that the disproportionation pathway of the low-valent Group 14 elements can be arrested by using a sterically protected ligand, then one can artificially generate the situation observed in the interstellar surrounding where the chance of disproportionation is very low as the molecules are extremely dilute.

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Die erste Kristallstruktur eines Germanium(II)-amids mit Germanium-Lithium-Bindung und deren Verhalten gegenüber Sauerstoff und Wasser

Cited by 2 publications

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Synthesis, Structures, and Reactivity of Alkylgermanium(II) Compounds Containing a Diketiminato Ligand

Synthesis, Structures, and Reactivity of Alkylgermanium(II) Compounds Containing a Diketiminato Ligand

Interstellar molecules: guides for new chemistry

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