White in Sherpa. Author's Pre-print: subject to Restrictions below, author can archive pre-print (ie pre-refereeing) Restrictions: •Must obtain written permission from Editor •Must not violate ACS ethical Guidelines Author's Post-print: subject to Restrictions below, author can archive post-print (ie final draft post-refereeing) Restrictions: •If mandated by funding agency or employer/ institution •Must obtain written permission from Editor confirming posting does not conflict prior publication policies •If mandated to deposit before 12 months, must obtain waiver from Institution/Funding agency or use AuthorChoice •12 months embargo Publisher's Version/PDF: author cannot archive publisher's version/PDF. 20/6/14 HD.