Redox reactions between guanidine electron donors and silver dicyanamide

• Verfasst von: Eberle, Benjamin [VerfasserIn]
• Verfasst von: Herrmann, Hendrik Hans [VerfasserIn]
• Verfasst von: Kaifer, Elisabeth [VerfasserIn]
• Verfasst von: Himmel, Hans-Jörg [VerfasserIn]
• Titel: Redox reactions between guanidine electron donors and silver dicyanamide
• Titelzusatz: synthesis of C,N material precursors and coordination polymers
• Verf.angabe: Benjamin Eberle, Hendrik Herrmann, Elisabeth Kaifer, and Hans-Jörg Himmel
• E-Jahr: 2013
• Jahr: June 7, 2013
• Umfang: 9 S.
• Fussnoten: Gesehen am 07.01.2021
• Titel Quelle: Enthalten in: European journal of inorganic chemistry
• Ort Quelle: Weinheim : Wiley-VCH, 1998
• Jahr Quelle: 2013
• Band/Heft Quelle: (2013), 21, Seite 3671-3679
• ISSN Quelle: 1099-0682
• DOI: doi:10.1002/ejic.201300267
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Coordination polymers
• Sach-SW: Polymers
• Sach-SW: Redox chemistry
• Sach-SW: Silver
• K10plus-PPN: 1744196761

Abstract

Reaction of the organic electron donors ttmgb [1,2,4,5-tetrakis(tetramethylguanidinyl)benzene] and tdmegb [1,2,4,5-tetrakis(N,N′-dimethylethyleneguanidinyl)benzene] with two equivalents of silver dicyanamide, Ag(dca), yielded the two salts (ttmgb)(dca)2 (1a) and (tdmegb)(dca)2 (1b). Their relatively high N/C ratios motivated an analysis of their suitability as precursors to C,N materials. The compounds melt at around 200 °C and decompose at 220 (1a) and 245 °C (1b). Reactions of the organic electron donors with an excess of Ag(dca) resulted in coupled redox and coordination reactions, leading finally to coordination polymers with different dimensionalities. The oxidized guanidine units in the polymers are connected through Ag-dca-Ag bridges, leading to stacks of co-planar C6 rings. The resulting cationic networks are neutralized by dca anions or anionic Ag(dca) chains.