Einsteinium halides

Table IV. Crystal Structures of Lanthanide Halides Used as Hosts for Einsteinium Halide Decay Studies...

Fig. 12.2 Absorption spectra of divalent einsteinium halides and comparison wUh EsBr [27]. Reproduced with permission of J. R. Peterson and J. Phys. CoUoq.

The crystal structures of the various lanthanide halides into which einsteinium trihalides were incorporated are summarized in Table IV. Both bromides and chlorides were prepared. The crystal... 

When these isotopes become available, chemical studies will be greatly simplified, and the complications introduced by the radioactivity of the actinide elements will be substantially minimized. The longest-lived isotopes of berkelium, californium, and einsteinium are still fairly short-lived substances, and macroscopic amounts have a tremendous associated radioactivity. Nevertheless, it should eventually be possible to prepare and study the solid halides of the actinide elements through the element einsteinium using weighable amounts of reactants. This remains for the future, however. The special experimental problems associated with highly radioactive substances are considered below. 

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