Biography of Clemens Roothaan

Clemens Roothaan (* 29. August 1918 in Nijmegen; † 17. June 2019 in Chicago) was a niederländisch-amerikanischer Physiker und Chemiker. He was 100 years old. His education included University of Chicago and Delft University of Technology. He worked at University of Chicago and The Catholic University of America. He was awarded the Guggenheim Fellowship.