Species with different arrangements of atoms but having no structural differences?
Stereoisomers have the same bond connectivity but different geometries. Two broad classes of stereoisomers are recognized: enantiomers and diastereomers. Enantiomers are non-superposable mirror-images of each other. Diastereomers are not. Enantiomers always contain chiral centers. Some diastereomers are chiral and some are not. Another type of isomer, conformational isomers (conformers), may be rotamers, diastereomers, or enantiomers depending on the compound. For example, ortho- position-locked biphenyl systems have enantiomers.
Species with different arrangements of atoms but having no structural differences and which are non-superposable mirror-images of each other?
enantiomers
Isomer
Stereoisomers have the same bond connectivity but different geometries. Two broad classes of stereoisomers are recognized: enantiomers and diastereomers. Enantiomers are non-superposable mirror-images of each other. Diastereomers are not. Enantiomers always contain chiral centers. Some diastereomers are chiral and some are not. Another type of isomer, conformational isomers (conformers), may be rotamers, diastereomers, or enantiomers depending on the compound. For example, ortho- position-locked biphenyl systems have enantiomers.
Species with different arrangements of atoms but having no structural differences and which are not non-superposable mirror-images of each other?
diastereomers
Isomer
Isomer
https://en.wikipedia.org/wiki/Isomer
Crystal
https://en.wikipedia.org/wiki/Crystal
In chemistry, an enantiomer (/ɪˈnæntiəmər, ɛ-, -tioʊ-/[1] ə-NAN-tee-ə-mər; from Greek ἐνάντιος (enántios) 'opposite', and μέρος (méros) 'part') (also named optical isomer,[2] antipode,[3] or optical antipode[4]) is one of two stereoisomers that are mirror images of each other that are non-superposable (not identical), much as one's left and right hands are mirror images of each other that cannot appear identical simply by reorientation.
Enantiomer
Diastereomers (sometimes called diastereoisomers) are a type of a stereoisomer.
Diastereomer
There are several species that have different arrangements of atoms but have no structural differences, including the stereoisomers called enantiomers and diastereomers. Enantiomers are mirror images of each other that are non-superposable, meaning they're not identical, while diastereomers are not non-superposable mirror images of each other.