Homochirality refers to a group of molecules with the same chirality. The molecules involved are not necessarily the same compounds, but similar groups are arranged around a central atom in the same way.
My understanding is that the definition of pure chirality should lie in macroscopic molecular groups. A group of molecules with the same chiral configuration (such as R or S configuration and D or L configuration) are said to have pure chirality, but in fact they are not necessarily compounds with the same composition. This is my understanding. . - -
References:
1。 Do chiral aggregates have entropy advantages? Julian; Mingjun; Doctor of chemical physics. b； (article); 2005; 109( 1); 440-444.doi: 10. 102 1/jp 046478 x
2。 Jaakkola, S., Sharma, V. and Annila, A. (2008). "The Causes of Chiral Consensus". Curr。 Chemistry. biology 2 (2): 53–58.doi: 10.2 174/ 18723 1308784220536。
3。 /content/Ben/CCB/2008/00000002/00000002/art 00005。
4。 Возможно ли спонтанное возникновение асимметрии в химической реакции
5。 Uwe Meierhenrich。 Asymmetry between amino acids and life; (Book) springer Publishing House; 2008. ISBN 978-3-540-76885-2.