hat
Omwen de bag nan yon molekil pataje yon atom kabòn (nan lòt konpoze, lòt atòm, tankou Silisyòm, fosfò, asenik, elatriye). Bag yo de yo sitiye sou de avyon pèpandikilè youn ak lòt: konpoze composant Spiro konvnab yo chiral epi yo ka rezoud nan isomèr optik (al gade optik isomèrm). An tèm de fòm, propadiene H2C = C = CH2 se pi senp spiro bag la, ak yon pwopadyen ki apwopriye ranplase tankou asid 1,3-propadienediic se optik aktif epi yo ka divize an de izometrik optik aktif. kò.
eng
At least two rings in a molecule share a carbon atom (in other compounds, other atoms, such as silicon, phosphorus, arsenic, etc.). The two rings are located on two planes perpendicular to each other: suitably substituted spiro compounds are chiral and can be resolved into optical isomers (see optical isomerism). In terms of form, propadiene H2C=C=CH2 is the simplest spiro ring, and an appropriately substituted propadiene such as 1,3-propadienediic acid is optically active and can be split into two optically active isomers. body.