The first cyanomethyl complex of gold, synthesized by reaction of a AuI complex with acetonitrile in the presence of a new guanidine N-superbase

• Verfasst von: Emeljanenko, Dimitri [VerfasserIn]
• Verfasst von: Peters, Anastasia [VerfasserIn]
• Verfasst von: Vitske, Viktoriia [VerfasserIn]
• Verfasst von: Kaifer, Elisabeth [VerfasserIn]
• Verfasst von: Himmel, Hans-Jörg [VerfasserIn]
• Titel: The first cyanomethyl complex of gold, synthesized by reaction of a AuI complex with acetonitrile in the presence of a new guanidine N-superbase
• Verf.angabe: Dimitri Emeljanenko, Anastasia Peters, Viktoriia Vitske, Elisabeth Kaifer, and Hans-Jörg Himmel
• E-Jahr: 2010
• Jahr: August 26, 2010
• Umfang: 7 S.
• Fussnoten: Im Titel ist "I" bei "AuI" hochgestellt ; Gesehen am 13.03.2023
• Titel Quelle: Enthalten in: European journal of inorganic chemistry
• Ort Quelle: Weinheim : Wiley-VCH, 1998
• Jahr Quelle: 2010
• Band/Heft Quelle: (2010), 30 vom: Okt., Seite 4783-4789
• ISSN Quelle: 1099-0682
• DOI: doi:10.1002/ejic.201000691
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: C-H acidity
• Sach-SW: C-H activation
• Sach-SW: Gold
• Sach-SW: Guanidine
• Sach-SW: Superbase
• K10plus-PPN: 1839013575

Abstract

Herein we report on the synthesis of the new strong N-base and electron donor tdmegb [1,2,4,5-tetrakis(N,N′-dimethylethyleneguanidino)benzene]. Compared to the previously synthesized ttmgb [1,2,4,5-tetrakis(tetramethylguanidino)benzene], this compound turned out to be a slightly better electron donor and a slightly weaker base. In experiments in which [AuCl(PPH3)] was dissolved in CH3CN together with tdmegb, we observed the formation of the first cyanomethyl complex of Au, namely [Au(CH2CN)(PPh3)] in good yield. This reaction does not take place for ttmgb. Moreover, in CH2Cl2 solutions containing the three components [AuCl(PPh3)], tdmegb and a nitrile (in large excess), only AuI reduction leading to a [Au11Cl3(PPh3)7] cluster is observed. Possible reaction mechanisms for this unusual reaction are discussed.