Denaturation experiments show that the larger part of organically bound tritium (OBT) consists of "buried tritium" and is not bound to carbon, as has been traditionally assumed. The logistical growth analysis of hydrogen isotopes in dry plant matter reveals a larger rate of increase of OBT than organically bound hydrogen (OBH). This is reflected by tritium accumulation for 1.4 and 2 in the primary hydration shell and in the base-pairing hydrogens of DNA respectively. If tritons and protons are considered as quantum mechanical entities, the accumulative tritium transfer from water to the hydrogen bonds of biopolymers is generally valid. Growth experiments confirm the assumed rapid isotope exchange "in vivo", which is not observed "in vitro" by denaturation.

No abstract

A “diagonal relationship” between technetium(VII) and osmium(VIII) can be proposed based on the properties of the newly synthesized title compounds. Like the valence‐isoelectronic OsO4, MeTcO3 adds olefins to form metallacycles (→cis‐diols), whereas the formally analogous MeReO3 epoxidates olefins in the presence of H2O2. This difference is presumably due to the oxidizing strength of TcVII being much greater than that of ReVII.

No abstract