aDepartment of Chemistry, Ferdowsi University of Mashhad, Mashhad P.O. Box 917791436, Iran
bDepartment of Chemistry, Georgetown University, Washington, DC 20057, USA
Crystallographic data analyses indicate that three types of prolinium cations, along with two types of hydrogen bonding, produce and stabilize the helical structure of triprolinium 12-phosphomolybdate. There are similarities between this organic-inorganic compound and peptides/proteins. The stronger “conventional” hydrogen bonds and the less common C-H…O attractions play critical roles in generating and stabilizing the DNA-like network.