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Complexes of Keggin POMs [PM 12 O 40 ] 3− (M=Mo, W) with GlyGlyGly and GlyGlyGlyGly Oligopeptides
Author(s) -
Greijer Björn,
De Donder Timothy,
Nestor Gustav,
Eriksson Jan E.,
Seisenbaeva Gulaim A.,
Kessler Vadim G.
Publication year - 2021
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.202000855
Subject(s) - chemistry , tungsten , hydrolysis , crystallography , molecule , solid state , fourier transform infrared spectroscopy , stereochemistry , nuclear chemistry , organic chemistry , physics , quantum mechanics
Complexes of Keggin phosphomolybdate and phosphotungstate anions with tri‐ and tetra‐peptides, GlyGlyGly and GlyGlyGlyGly respectively, were isolated and investigated by single crystal X‐ray diffraction, FTIR and SEM‐EDS in the solid state and by 1 H‐ and 31 P NMR and ESI‐MS in solution. The trends imposed by longer chain length and increased hydrophobicity of the peptide molecules were traced both in binding in the solid state and in effects on solution stability of POMs. Hydrolysis of peptides was observed in strongly acidic solutions at enhanced temperatures in the presence of tungsten POMs.