S1 [Submitted as an Article to the Journal of the American Chemical Society] Supporting Information The Plasticity of the Nickel(II) Coordination Environment in Complexes with Hemilabile Phosphino-Thioether Ligands. Charles W. Machan, Alexander M. Spokoyny, Matt R. Jones, Amy A. Sarjeant, Charlotte L. Stern, and Chad A. Mirkin* Department of Chemistry and the International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Il 60208