266 The Shortest, Unsupported Cu(I)-Cu(I) Interaction and Related Group 11 Chemistry

Thursday, November 5, 2009: 11:00 AM
Rio Grande (Camino Real Hotel)
John P. Fackler , Department of Chemistry, Texas A&M University, College Station, TX
Gina M. Chiarella, Ph.D. , Department of Chemistry, Texas A&M University, College Station, TX
Alex Rozanski , Department of Chemistry, Texas A&M University, College Station, TX
Doris Melgarejo , Department of Chemistry, Texas A&M University, College Station, TX
The presence of substantial copper(I) in the Cardiolite Lite Technetium heart imaging system raises questions related to its purpose there. Our groups recent work with copper(I) guanidinates successfully identified the here-to-fore shortest Cu(I)-Cu(I) interaction observed, 267 pm. This result was confirmed as part of the research experience of an undergraduate interested in medicine. Surprisingly this latter result has been found to relate to the short copper-copper distances in the metalloenzyme system pMMO and some other protein systems. Thus an undergraduate research project related to a metal ion in a heart imaging system has uncovered new chemistry, previously unknown for molecular copper(I). Other new closed shell chemistry of group 11 compounds, especially gold(I), has produced the first luminescent gold(I) cluster to contain two hypercoordianted C atoms. This product also will be described.