A research team has synthesized a molecular species with the empirical formula P2Cl4
CHEMISTRY · Multi-part · AP · Chemistry · Compound Structure and Properties · Compound Structure and Properties
Problem
A research team has synthesized a molecular species with the empirical formula P2Cl4. Before committing the molecule to computational analysis, the chemists wish to outline a plausible Lewis representation so they can anticipate possible bonding patterns.
Respond to each of the following prompts. Do not draw the actual diagram; instead, address the conceptual issues that must be resolved first.
(a) Describe the criteria you would apply to decide which atoms in P2Cl4 should be treated as central atoms and which should be treated as terminal atoms.
(b) Explain how the total number of valence electrons constrains whether the two phosphorus atoms are joined by a single bond or a multiple bond.
(c) Phosphorus can, in principle, exceed an octet. Discuss how this possibility influences your evaluation of lone-pair placement and overall electron distribution in the molecule.