CO₂ capture and release behaviors of three amidines bearing silatranyl group in DMSO solution were evaluated under dry conditions containing a very small amount of water. A six-membered cyclic amidine with silatranyl group captured CO₂ at 25 °C under atmospheric pressure quantitatively, and the trapped CO₂ was released at 60 °C under Ar atmosphere. A five-membered cyclic amidine with silatranyl group also captured CO₂, but less efficiently, under the same conditions as above. In contrast, an acyclic amidine with silatranyl group did not capture CO₂ at all, as expected from the poor CO₂-capturing ability of the acyclic amidine moiety.

中文翻译：

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干燥条件下带有硅烷基的五元和六元环状am的二氧化碳捕获能力

在干燥条件下（含有少量水）评估了DMSO溶液中三个带有甲硅烷基的am的CO ₂捕获和释放行为。与silatranyl基的六元环脒捕获CO ₂在大气压力下25℃下定量，和被捕获的CO ₂在60℃在氩气氛下被释放。在与上述相同的条件下，具有硅烷基（silatranyl）基的五元环状am也捕获了CO ₂，但是效率较低。相反，如从无环am部分的差的CO ₂捕获能力所预期的那样，具有甲硅烷基的无环am根本没有捕获CO ₂。