Cheat Day - What to Expect

(Joey) #41

It’s certainly been more sinister, and damn near rectus.

(You've tried everything else; why not try bacon?) #42

:rofl::rofl::rofl::rofl: :bacon::bacon::bacon:

#43

Cis and trans terms springs to mind, although these terms may have been somewhat hijacked since I last learned chemistry and molecular asymetry many years ago…the dictionary keeps evolving I guess :man_shrugging:

(Joey) #44

Screenshot_20230627_151921

Still much in use. These terms refer to whether carbon atoms bend over onto the “same” side of the bond (cis) at the ends of a double bond, or whether they bend toward “opposite” sides of each other (trans).

FWIW: Current cultural politics aside, trans is chemically preferred … as it further separates repulsion between two electron clouds. Just sayin’.

#45

Wonderful. Chemistry is my worst subject (from school subjects I had) but I am still mildly interested in it. I can handle it in such tiny, interesting doses. Maybe I will remember this.

(Joey) #46

Prudent. Chemicals should always be handled in tiny doses. :+1:

(You've tried everything else; why not try bacon?) #47

Cis- and trans- aren’t always related to R/S or L/D forms. As your graphic shows. L- and D- forms of a molecule usually have pretty similar chemical properties, though biological systems usually prefer one or the other. Whereas cis- and trans- bonds, as I understand it, affect the chemical behaviour of the molecule.