| http://www.w3.org/ns/prov#value | - each R2 independently is a sterically non-interfering group, including moieties such as hydrogen, halogen, a hydrocarbyl-containing group, a hetero-acyclic group, or a group having the formula (CH2 X)a E in which X is O, NH, or a single bond, E is a functional group that includes active hydrogen, and a is a whole number from 1 to 100;
|
