1. 6128 Burke Laboratory, Department of Chemistry, Dartmouth College, Hanover, New Hampshire 03755, United States
2. Dow, Core R&D, 1776 Building, 633 Washington Street, Midland, Michigan 48667, United States
3. Dow, Industrial Solutions Process R&D, 2301 N. Brazosport Blvd., Freeport, Texas 77541, United States
4. Department of Chemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States