S1 Supporting Information Hydrosilylation Catalysis by Earth Alkaline Metal Silyl: Synthesis, Characterization, and Reactivity of Bis(triphenylsilyl)calcium Valeri Leich, Thomas P. Spaniol, Laurent Maron,* and Jun Okuda* Table of Contents: Hydrosilylation Catalysis by Earth Alkaline Metal Silyl: Synthesis, Characterization, and Reactivity of Bis(triphenylsilyl)calcium .................................................................................... 1 General Experimental Remarks.................................................................................................. 2 Experimental Section ................................................................................................................. 2 Preparation of [Ca(SiPh 3 ) 2 (thf) 4 ] (2a). ................................................................................... 2 Preparation of [Ca(SiPh 3 ) 2 (triglyme-κ 4 )(thf)] (2b). ............................................................... 7 Reaction of [Ca(SiPh 3 ) 2 (thf) 4 ] (2a) with H 2 O. ..................................................................... 10 Reaction of [Ca(SiPh 3 ) 2 (thf) 4 ] (2a) with Me 3 SiCl. .............................................................. 10 Reaction of [Ca(SiPh 3 ) 2 (thf) 4 ] (2a) with H 2 . ........................................................................ 11 Reaction of [Ca(SiPh 3 ) 2 (thf) 4 ] (2a) with 1,1-DPE. .............................................................. 12 Reaction of [Ca(SiPh 3 ) 2 (thf) 4 ] (2a) with pyridine. ............................................................... 14 Hydrosilylation of olefins..................................................................................................... 14 X-ray Crystallography .............................................................................................................. 16 Computational Details .............................................................................................................. 19 Electronic Supplementary Material (ESI) for Chemical Communications This journal is © The Royal Society of Chemistry 2014