| Abstract
| - The reactions between Ti atoms and CH4, SiH4, and SnH4 at a temperature of 12 K in Armatrixes were studied experimentally by IR spectroscopy, taking in the effect of isotopicsubstitution, and by quantum-chemical calculations. The experiments show that thereactivity changes considerably from CH4 to SiH4 or SnH4. The reaction between Ti andCH4 proceeds inefficiently, and only after photolytic activation of the Ti atoms does insertionoccur to give HTiCH3, which features only terminal Ti−H and C−H bonds. On the otherhand, reactions with SiH4 and SnH4 occur upon deposition, leading to the products cis- andtrans-HTi(μ-H)2SiH and HTi(μ-H)3E (E = Si, Sn). Selective photolysis can be used to increasethe yields of these products. In agreement with the experimental results, quantum-chemicalcalculations predict the lowest energy form of a molecule with the overall formula TiEH4 tobe HTiCH3 with only terminal H atoms for E = C but HTi(μ-H)3E with three bridging Hatoms in the case of E = Si, Sn.
- The reactions between Ti atoms and CH4, SiH4, and SnH4 at a temperature of 12 K in Ar matrixes were studied experimentally by IR spectroscopy, taking in the effect of isotopic substitution, and by quantum-chemical calculations. Reactions with SiH4 and SnH4 occur upon deposition, leading to the products cis- and trans-HTi(μ-H)2SiH and HTi(μ-H)3E (E = Si, Sn).
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