SEARCH Articles Figures Tables Antiperiplanar Antiperiplanar lone pair hypothesis theory Antiperiplanar, lone-pair hypothesis Antiperiplanarity Cooperative effect Cooperativity effects Cooperativity/cooperative effect Donor stereoelectronic effects Effect of stereoelectronics Effective pairs Effective work Lone pair effect Lone pairs Stereoelectronic effect Stereoelectronic effects, and Stereoelectronics Working hypothesis