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. Author manuscript; available in PMC: 2023 Nov 30.
Published in final edited form as: Dalton Trans. 2022 Nov 29;51(46):17753–17761. doi: 10.1039/d2dt02600g

Figure 1.

Figure 1.

(a) Molecular structure of the commercial MRI contrast agent Gd-DTPA; (b) Unit-cell structure of the prototypical PB; (c) Comparison of electronic spin centres in a mononuclear metal complex vs. a nanoparticulated cluster with a single magnetic domain; (d) simplified one-dimensional diagram of KEu(III)Fe(II)(CN)6 and Eu(III)Fe(III)(CN)6; (e, f) nuclear resonant vibrational spectroscopic transitions of 57Fe (e) and 151Eu (f).