Preparation of Ruthenium Dithiolene Complex/Polysiloxane Films and Their Responses to CO Gas

• Published in: Molecules (Basel, Switzerland) Vol. 23; no. 4; p. 845
• Main Authors: Tsukada, Satoru, Sagawa, Takuya, Yamamoto, Kazuki, Gunji, Takahiro
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 07.04.2018; MDPI
• Subjects: Absorption; Adducts; Carbon monoxide; Carbonyls; composite film; Composite materials; Exposure; Halogen compounds; Hydrocarbons; Laboratories; Ligands; Metal complexes; metalladithiolene complex; Ruthenium; ruthenium complex; sol-gel reaction; tetraethoxysilane; carbon monoxide; metalladithiolene complex; tetraethoxysilane; sol-gel reaction; composite film; ruthenium complex
• ISSN: 1420-3049; 1420-3049
• DOI: 10.3390/molecules23040845

To develop advanced materials using metal complexes, it is better to prepare metal complexes contained in composite or hybrid films. To achieve this purpose, we synthesized ruthenium complexes with dihalogen-substituted benzendithiolate ligands, [(η⁶-C₆Me₆)Ru(S₂C₆H₂X₂)] (X = F, 3,6-Cl, Br, 4,5-Cl), - . We also investigated preparation of or containing polysiloxane composite films and their reactivity to CO gas. All ruthenium complexes - reacted with CO gas, and carbonyl ligand adducts - were generated. Ruthenium complexes - show two strong absorption peaks around 550 and 420 nm. After exposure to CO gas, these absorption peaks were immediately decreased without a peak shift. A similar trend was observed in or containing polysiloxane composite films. These results indicate that and were easily converted into and , both in the solution and the polysiloxane film during CO gas exposure.