IUPAC

The IUPAC/IUPAP Joint Working Party is charged with examining the priority claims for elements 110, 111 and 112 ultimately leading to a Report of recommendations suitable for publication.

• Documentation submitted via Professor Leigh has been thoroughly studied by the Working Party. Contact among the Working Party members has been mostly by electronic mail, although Nakahara and Karol were able to arrange to meet for several hours in Pittsburgh for a worthwhile debate. The recommendations are being drafted by the Chair for distribution among and input revisions from the members. These recommendations are governed by the previous criteria established and by application of discovery profile formats used by the 101-109 Transfermium Working Group to 110-112. Only very limited input from the Russian laboratory at Dubna has been secured.
• In August 2000, a report to the Commission II.2 indicated that in accordance with the criteria for the discovery of elements, previously established (Pure Appl. Chem. 63(6), pp. 879-886, 1991), the WP was able to attribute the discovery of element 110 to the GSI at Darmstadt. Conclusive discovery of elements 111 and 112 had not yet been established by the WP. > see II.2 minutes
• Project completed - IUPAC Technical Report entitled 'On the discovery of the elements 110-112' is published in Pure Appl. Chem. 73(6), pp. 959-967, 2001.
• A later report 'On the Claims for Discovery of Elements 110, 111, 112, 114, 116, and 118' is published in Pure Appl. Chem. 75(10), pp. 1601-1611, 2003.
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