Multi-technique structural analysis of zinc carboxylates (soaps)

Molly Wagner; Roberta Pigliapochi; Valeria Di Tullio; Jaclyn Catalano; Nicholas Zumbulyadis; Silvia A. Centeno; Xiaoling Wang; Kuizhi Chen; Ivan Hung; Zhehong Gan; Michael R. Dworzak; Glenn P. A. Yap; Cecil Dybowski

doi:10.1039/D3DT00184A

Multi-technique structural analysis of zinc carboxylates (soaps)†

Molly Wagner,

*^abc Roberta Pigliapochi,^ade Valeria Di Tullio,^f Jaclyn Catalano,^g Nicholas Zumbulyadis,^a Silvia A. Centeno,^d Xiaoling Wang,^h Kuizhi Chen,^h Ivan Hung,

^h Zhehong Gan,

^h Michael R. Dworzak,^a Glenn P. A. Yap

^a and Cecil Dybowski

*^a

Author affiliations

* Corresponding authors

^a Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
E-mail: mollyaw@udel.edu, dybowski@udel.edu

^b US Department of Energy, Ames Laboratory, Ames, Iowa 50010, USA

^c Department of Chemistry, Iowa State University, Ames, Iowa 50010, USA

^d Department of Scientific Research, The Metropolitan Museum of Art, New York, New York 10028, USA

^e Department of Physics, CUNY-City College of New York, New York, NY 10031, USA

^f Institute of Heritage Science, National Council of Research, Rome, Italy 00016

^g Department of Chemistry and Biochemistry, Montclair State University, Montclair, New Jersey, USA

^h National High Magnetic Field Laboratory, Tallahassee, Florida 32310, USA

Abstract

A series of medium- and long-chain zinc carboxylates (zinc octanoate, zinc nonanoate, zinc decanoate, zinc undecanoate, zinc dodecanoate, zinc pivalate, zinc stearate, zinc palmitate, zinc oleate, and zinc azelate) was analyzed by ultra-high-field ⁶⁷Zn NMR spectroscopy up to 35.2 T, as well as ¹³C 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.

Dalton Transactions

Multi-technique structural analysis of zinc carboxylates (soaps)†

Abstract

Supplementary files

Article information

Download Citation

Permissions

Multi-technique structural analysis of zinc carboxylates (soaps)

Social activity

Search articles by author

Spotlight

Advertisements