Heavy alkaline earth metal bis(phenyltrimethylsilyl) amides as MOCVD precursors

CHED 1174

Felicia Konopka, fk2123@barnard.edu1, Ana Torvisco, atorvisc@mailbox.syr.edu2, and Karin Ruhlandt-Senge, kruhland@syr.edu2. (1) Department of Chemistry, Barnard College, 6173 Altschul, Barnard College, New York, NY 10027, (2) Department of Chemistry, Syracuse University, CST 1-014, Syracuse, NY 13244-4100
The design of novel and efficient MOCVD (metal organic chemical vapor deposition) precursors for heavy alkaline earth metals (Ca, Sr, Ba) is of recent interest. Current methods of synthesis face the challenge of producing precursors that are free of oxygen, silicon or fluoride contaminants, and that are facile and relatively inexpensive to synthesize. However, these compounds are often difficult to prepare due to the high oxophilicity of the metal centers and weak metal-ligand bonding; making the synthesis of these compounds quite challenging. In order to address this problem, sterically demanding ligands, as well as donors, are used to kinetically stabilize the metal centers. The use of donors will aid in saturating the coordination sphere of the larger alkaline earth metal derivative.