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Supramolecular networks and Hirshfeld surfaces of oxydiacetic acid and iminodiacetic acid salts
Author(s) -
Gomathi V.,
Theivarasu C.
Publication year - 2019
Publication title -
acta crystallographica section b
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.604
H-Index - 33
ISSN - 2052-5206
DOI - 10.1107/s205252061900252x
Subject(s) - iminodiacetic acid , supramolecular chemistry , salt (chemistry) , chemistry , organic chemistry , crystal structure , chelation
Oxydiacetic acid (Oda) and iminodiacetic acid (Ida) have been combined with two diamines, namely ethylenediamine (en) and o ‐phenylenediamine ( o ‐phen), to give three molecular crystals of compositions [(Oda 2− )(en 2+ )]·H 2 O (Odaen), [(Ida − )(0.5en + )] (Idaen) and [(Oda − )( o ‐phen + )] (Odaophen). Single crystal X‐ray structure determination of the three molecular salts revealed that the hydrogen bonding interactions form distinct supramolecular chains. In Odaen, water molecules and Oda 2− anions generate one‐dimensional supramolecular chains where two chains overlap each other in zigzag form. In Odaophen, Oda − anions generate a one‐dimensional linear supramolecular chain. In Idaen, both intermolecular and intramolecular proton transfer occurs. Ida − anions generate a one‐dimensional zigzag chain. These one‐dimensional supramolecular chains extend to form different two‐dimensional supramolecular chains by the interaction of diaminium and monoaminium cations. Intermolecular close contacts are also examined using Hirshfeld analysis to reveal similarities and differences in the crystal structures.