Pressure-Induced Spectroscopic Changes in a Californium 1D Material Are Twice as Large as Found in the Holmium Analog

Joseph M Sperling; Evan Warzecha; Cory J Windorff; Bonnie E Klamm; Alyssa N Gaiser; Megan A Whitefoot; Frankie D White; Todd N Poe; Thomas E Albrecht-Schönzart

doi:10.1021/acs.inorgchem.0c01290

Pressure-Induced Spectroscopic Changes in a Californium 1D Material Are Twice as Large as Found in the Holmium Analog

Inorg Chem. 2020 Aug 3;59(15):10794-10801. doi: 10.1021/acs.inorgchem.0c01290. Epub 2020 Jul 10.

Authors

Joseph M Sperling¹, Evan Warzecha¹, Cory J Windorff¹, Bonnie E Klamm¹, Alyssa N Gaiser¹, Megan A Whitefoot¹, Frankie D White¹, Todd N Poe¹, Thomas E Albrecht-Schönzart¹

Affiliation

¹ Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States.

PMID: 32648751
DOI: 10.1021/acs.inorgchem.0c01290

Abstract

In this study, the synthesis, characterization, and pressure response of a 1D californium mellitate (mellitate = 1,2,3,4,5,6-benzenehexacarboxylate) coordination polymer, Cf₂(mell)(H₂O)₁₀·4H₂O (Cf-1), are reported. The Cf-O lengths within the crystal structure are compared to its gadolinium (Gd-1) and holmium (Ho-1) analogs as well. These data show that the average Cf-O bond distance is slightly longer than the average Gd-O bond, consistent with trends in effective ionic radii. UV-vis-NIR absorption spectra as a function of pressure were collected using diamond-anvil techniques for both Cf-1 and Ho-1. These experiments show that the Cf(III) f → f transitions have a stronger dependence on pressure than that of the holmium analog. In the former case, the shift is nearly linear with applied pressure and averages 6.6 cm^-1/GPa, whereas in the latter, it is <3 cm^-1/GPa.