Single-molecule magnets: Structure and properties of [Mn18O14(O2CMe)(18)(hep)(4)(hepH)(2)(H2O)(2)](ClO4)(2) with spin S=13

EK Brechin, EC Sanudo, W Wernsdorfer, C Boskovic, J Yoo, DN Hendrickson, A Yamaguchi, H Ishimoto, TE Concolino, AL Rheingold, G Christou