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Electron-deficient tin(IV)tetraphenylporphyrin perchlorate, [Sn IV (TPP)(ClO 4 ) 2 ] was used as a highly efficient catalyst for chemical fixation of carbon dioxide. The bifunctional catalytic system [Sn(TPP)(ClO 4 ) 2 ]/tetrabutylphosphonium bromide (TBPB) was applied for preparation of cyclic carbonates from epoxides and carbon dioxide. The effect of reaction...
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