Organometallic Compounds

Abstract

blocked by the ring on the left. We have developed syntheses for the two lower homologues of 21, ions 22 and 23. These ar e too small to give polymers , and with iron chloride they give sandwiches, 24 and 25 , with two iron atoms. Similarly with Co (NH 3 ) 6 Cl 3 and NaPF 6 ~~ gives a cobalticinium analogue , 26. The syntheses summarized in Schemes 3 and 4 fuse five-menibered 22 23