Final answer:
Substances with intermediate electron donating power are not potent electron donors or acceptors. Examples include certain Lewis bases which can donate electrons to form bonds, and organic molecules influenced by inductive effects due to their functional groups.
Step-by-step explanation:
In chemistry, substances that have intermediate electron donating power are neither strong electron donors nor strong electron acceptors. These substances can donate electrons but not as readily as strong nucleophiles. In modern chemistry, electron donors are often referred to as nucleophiles, and the acceptors are called electrophiles. A Lewis base, which includes a variety of ligands and ions, is an example of a species that can donate a pair of electrons to form a coordinate covalent bond.
Organic molecules may exhibit varying electron donating abilities depending on their functional groups and the inductive effects present. For example, substituents on aromatic rings can alter the ring's electron density, making the ring more or less nucleophilic based on the nature of the substituents. Intermediate electron donors would be those substituents that are not strongly electron-withdrawing nor strongly electron-donating.