Penggunaan larutan asam yang cukup kuat, misalnya asam sulfat pekat, dapat menghasilkan bentuk terprotonasi, yang kemudian menjadi kompleks oktahedron TcO3(OH)(H2O)2 dihidrat.[4]
↑Schwochau, Klaus (2000). Technetium: Chemistry and radiopharmaceutical applications. Weinheim [u.a.]: Wiley-VCH. hlm.127. ISBN3-527-29496-1.
↑Omori, T.; Asahina, K.; Suganuma, H. (1995). "Mechanism of the solvent extraction of pertechnetate with tetraphenylarsonium chloride". Journal of Radioanalytical and Nuclear Chemistry. 191 (1): 99–104. doi:10.1007/BF02035989. S2CID97175462.
↑German, Konstantin E.; Fedoseev, Alexander M.; Grigoriev, Mikhail S.; Kirakosyan, Gayane A.; Dumas, Thomas; Den Auwer, Christophe; Moisy, Philippe; Lawler, Keith V.; Forster, Paul M.; Poineau, Frederic (24 September 2021). "A 70‐Year‐Old Mystery in Technetium Chemistry Explained by the New Technetium Polyoxometalate [H7O3]4[Tc20O68]⋅4H2O". Chemistry – A European Journal. 27 (54): 13624–13631. doi:10.1002/chem.202102035.