Abstract
Organotin dihydrides (R2SnH2) have been extensively studied as precursors in the formation of polymeric materials (polystannanes) exhibiting a linear backbone of covalently bonded tin atoms. Linear polystannanes can be seen as a molecular metal wire (Sn-Sn) embedded in an organic jacket, featuring an increased degree of electron delocalization by catenation leading to promising materials in charge-transfer devices.1
Similarly to organotin dihydrides (R2SnH2), organotin trihydrides (RSnH3) undergo Sn-Sn bond formation upon loss of hydrogen via a dehydrogenative coupling reaction in the presence of the cheap and easy to handle amine base TMEDA (N,N,N’,N’- tetramethylethylenediamine) as polymerization catalyst.2 Therefore, a range of aryl substituted tin trihydrides (arylSnH3) was successfully converted to novel aryl decorated tin nanoparticles (aryl@Sn) (Figure 1).3,4 By means of DFT calculations, EXAFS/XANES and NMR measurements a reductive dehydrocoupling mechanism is proposed allowing for H2 abstraction Sn-Sn bond formation.
In situ synchrotron SAXS measurements, HR-SEM, as well as TEM imaging were applied to elucidate the resulting morphology as well as the size of the nano-Sn/C composites formed.
Similarly to organotin dihydrides (R2SnH2), organotin trihydrides (RSnH3) undergo Sn-Sn bond formation upon loss of hydrogen via a dehydrogenative coupling reaction in the presence of the cheap and easy to handle amine base TMEDA (N,N,N’,N’- tetramethylethylenediamine) as polymerization catalyst.2 Therefore, a range of aryl substituted tin trihydrides (arylSnH3) was successfully converted to novel aryl decorated tin nanoparticles (aryl@Sn) (Figure 1).3,4 By means of DFT calculations, EXAFS/XANES and NMR measurements a reductive dehydrocoupling mechanism is proposed allowing for H2 abstraction Sn-Sn bond formation.
In situ synchrotron SAXS measurements, HR-SEM, as well as TEM imaging were applied to elucidate the resulting morphology as well as the size of the nano-Sn/C composites formed.
Original language | English |
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Publication status | Published - 13 Feb 2016 |
Event | Zing Inorganic Polymers Conference 2016 - California, Carlsbad, United States Duration: 12 Mar 2016 → 15 Mar 2016 |
Conference
Conference | Zing Inorganic Polymers Conference 2016 |
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Country/Territory | United States |
City | Carlsbad |
Period | 12/03/16 → 15/03/16 |
ASJC Scopus subject areas
- Chemistry(all)
Fields of Expertise
- Advanced Materials Science
Cooperations
- NAWI Graz