Do organopolonium compounds exist?
As one might expect for an element with no long-lived isotopes, little is known about organopolonium compounds. What is known may be broadly divided into two categories [1,2; cited by Wikipedia]:

Compounds where polonium takes the place of a lighter chalcogen, acting more nearly parallel to sulfur, selenium and tellurium than to oxygen. Examples include polonoethers $\ce{R2Po}$ and arylpolonium halides $\ce{Ar2PoX2,Ar3PoX}$.

Complexes with chelating agents similar to metal complexes.  WP cites complexes with 2,3-butsnediol and theoretical from Ref. [1].


All such compounds are known only in tracer amounts because of both chemical instability and rapid radioactive decay.
References
1.
Zingaro, Ralph A. (2011). &quot;Polonium: Organometallic Chemistry&quot;. Encyclopedia of Inorganic and Bioinorganic Chemistry. John Wiley &amp; Sons. p. 1–3. doi:10.1002/9781119951438.eibc0182.
2.
Murin, A. N.; Nefedov, V. D.; Zaitsev, V. M.; Grachev, S. A. (1960). &quot;Production of organopolonium compounds by using chemical alterations taking place during the β-decay of RaE&quot; (PDF). Dokl. Akad. Nauk SSSR (in Russian). 133 (1): 123–125. Retrieved 12 April 2020.