“cisoid”的英文意思_释义_用法

单词

cisoid

释义

cisoid, a. Chem.|ˈsɪsɔɪd|
[f. cis- + -oid; cf. transoid a.]
Designating a compound, group, or structure in which two like atoms or groups lie on the same side of a single bond or a line of bonds.
1956L. F. & M. Fieser Org. Chem. (ed. 3) xii. 302 Various combinations of chair and boat cyclohexane rings make possible a number of conformations, each of which retains its cisoid or transoid character.1968Science 23 Feb. 836/2 The cisoid conformation.1972DePuy & Chapman Molec. Reactions & Photochem. iv. 59 1,3-Butadiene exists in solution as a rapidly equilibrating mixture of transoid and cisoid conformers, with the former predominating by nearly 20 : 1.1984Greenwood & Earnshaw Chem. of Elements (1986) xv. 857 The S₄N₄ retains the same conformation and almost the same dimensions as in the free molecule, with 2 of the 4 planar N atoms acting as a cisoid bridge.

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