“…Both the monomers, I and II, along with [N(CH 3 ) 4 ][Zn(H 2 PO 4 ) 3 ] 10have the same configuration for the 4-membered ring, made with Zn and PO 2 (OH) 2 units, but the terminal moieties create the subtle differences between the two. While in the zinc phosphate, [N(CH 3 ) 4 ][Zn(H 2 PO 4 ) 3 ],10 the terminal hanging units from the Zn center are made up of PO 2 (OH) 2 units, in I they are PO 3 (OH) and PO 2 (OH) 2 units, and in II it is PO 3 (OH) units only. It has been postulated that the facile formation of higher dimensional structures from a lower dimensional one occurs via the deprotonation of the terminal -OH groups.…”