INORGANIC CHEMISTRY DIVISION
COMMISSION ON NOMENCLATURE OF INORGANIC CHEMISTRY
On the Claims for Discovery of Elements 110, 111, 112, 114, 116,
and 118 (IUPAC Technical Report)
P.J. Karol1, H. Nakahara2, B.W. Petley3,
and E. Vogt4
1 IUPAC: Past Chair of Commission V.7 (Radiochemistry
and Nuclear Techniques), Department of Chemistry, Carnegie Mellon University,
Pittsburgh, PA 15213, USA; 2 IUPAC :Titular Member, Commission V.7 (Radiochemistry
and Nuclear Techniques), Chemistry Department, Tokyo Metropolitan University,
Tokyo 192-03, Japan; 3 IUPAP: Past Chair of Commission C2 (Symbols,
Units, Nomenclature, Atomic Masses and Fundamental Constants), Centre
for Basic, Thermal, and Length Metrology, National Physical Laboratory,
Teddington, Middlesex TW11 OLW, UK; 4 IUPAP: Past Chair of Commission
C12 (Nuclear Physics), TRIUMF, Vancouver, BC, V6T 1W5, Canada
Abstract: The IUPAC/IUPAP Joint Working Party on the priority
of claims to the discovery of new elements has reviewed the relevant
literature pertaining to several claims. In accordance with the criteria
for the discovery of elements, previously established by the 1992 IUPAC/IUPAP
Transfermium Working Group, and reinforced by the 1999 IUPAC/IUPAP Joint
Working Party, it was determined that the claim by the Hofmann et al.
research collaboration for the discovery of element 111 at Gesellschaft
f�r Schwerionenforschung (GSI) has fulfilled those criteria. For elements
112, 114, and 116, the collaborations of Hofmann et al. and of Oganessian
et al. produced high-quality data with plausible interpretations. However,
confirmation by further results is needed to assign priority of discovery
for these elements. The working party was not persuaded that other collaborations
have satisfied the discovery criteria.