| 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. |