DOI: http://hdl.handle.net/10069/00042022
Intramolecular and intermolecular hydrogen bonds in non-chelation ethylenediaminetetraacetic acid (EDTA) and its salts
DOI:
https://doi.org/10.51094/jxiv.213Keywords:
Complex ion, Ligand, Room-temperature phosphorescence, X-ray CrystallographyAbstract
Ethylenediaminetetraacetic acid (EDTA), its non-chelating conformational salts and their chelates of alkaline earth metals have recently been reported to be room temperature phosphorescence (RTP)-emissive. The origin of RTP was identified as through-space conjugation by hydrogen bonding. Some other non-chelating EDTAs and their salts with their crystal structures have been previously reported individually, but RTP-emissive or not are unknown. Thus, in the present study, I investigated the intra- and intermolecular hydrogen bonding modes in the crystals of 25 non-chelating EDTAs and their salts using Cambridge Structural Database (CSD). In the future, integrating the RTP ability and the reported crystal structures of EDTAs and their salts including metal-EDTA chelates would be intriguing research.
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