prov:value
| - Suitable organometallic catalysts, exemplified here by fin as the metal, are represented by the formula: RnSn[X-R1-Y]2, wherein R is a C1-C8 alkyl or aryl group, R1 is a C0-C18 methylene group optionally substituted or branched with a C1-C4 alkyl group, Y is hydrogen or a hydroxyl group, preferably hydrogen, X is methylene, an ???S???, an ???SR2COO???, ???SOOC???, an -03S???, or an ???OOC??? group
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