Download PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... In a new approach towards C 60 , two C 3 -symmetric precursors having all the carbon content and thirteen rings have been assembled in just one step from readily crafted building-blocks through threefold Wittig–Horner coupling. ... As part of our 8., , , , , , , , , and ongoing interest in the ...