syndiotactic

syndiotactic

[sin-dahy-oh-tak-tik, sin-dahy-]
adjective Chemistry.
(of a polymer molecule) having a regular alternation of opposite configurations at successive regularly spaced positions along the chain. Compare configuration ( def 4 ).

Origin:
1955–60; irregular < Greek sýndyo two together (see syn-, duo-) + tactic

syndiotacticity [sin-dahy-oh-tak-tis-i-tee, sin-dahy-] , noun
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syndiotactic (ˌsɪndɪəʊˈtæktɪk)
 
adj
chem Compare isotactic (of a stereospecific polymer) having alternating stereochemical configurations of the groups on successive carbon atoms in the chain
 
[C20: from syndyo, from Greek sunduo two together + -tactic]

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