syndiotactic
/ˌsɪndɪəʊˈtæktɪk/adjective
- Chemistry (of a polymer or polymeric structure) in which the repeating units have alternating stereochemical configurations【化】间同（立构）的, 间规（立构）的。
词源
1950s: from Greek sunduo 'two together' + taktos 'arranged' + -IC.