Articlehybrid2023

Multi-technique structural analysis of zinc carboxylates (soaps)

Molly Wagner · Roberta Pigliapochi · Valeria Di Tullio · Jaclyn Catalano · Nicholas Zumbulyadis · Silvia A. Centeno +7 more

17 citations0/0 files storedDalton Transactions

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Cultural Heritage Materials Analysis Crystal structures of chemical compounds Molecular spectroscopy and chirality

Abstract

C NMR and FTIR spectroscopy. We also report the single-crystal X-ray diffraction structures of zinc nonanoate, zinc decanoate, and zinc oleate-the first long-chain carboxylate single-crystals to be reported for zinc. The NMR and X-ray diffraction data suggest that the carboxylates exist in three distinct geometric groups, based on structural and spectroscopic parameters. The ssNMR results presented here present a future for dynamic nuclear polarization (DNP)-NMR-based minimally invasive methods for testing artwork for the presence of zinc carboxylates.

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References

2007Pigment Compendium: A Dictionary of Historical Pigments 2003The Characterization of Metal Soaps 2005FTIR Studies of the Effects of Pigments on the Aging of Oil 2015An infrared spectroscopic study of the nature of zinc carboxylates in oil paintings 2007Analytical Imaging Studies of Cross-Sections of Paintings Affected by Lead Soap Aggregate Formation 2003The characterisation of lead fatty acid soaps in ‘protrusions’ in aged traditional oil paint 2020A review of solvent action on oil paint 2016The crystallization of metal soaps and fatty acids in oil paint model systems

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