Synthesis and Optical Properties of Terminally Substituted Conjugated Polyenes
نویسنده
چکیده
Compound 1 reacts with compounds of the transition metals Fe, Ni, Rh, Mn, Cr, or M o to form dark brown to black solids, whose insolubility and relative nonvolatility make their characterization difficult. However, black “FePlo,” formed immediately upon reaction with FeCI, in T H F at room temperature exhibits-like 1 -an IR band at 8 15 cm I, which is evidence for an intact aromatic Ps ring as structural element, since it is definitely not caused by free 1. That a “decaphosphaferrocene” might indeed be present was further supported by direct one-pot synthesis of the mixed sandwich complex 3 (in addition to “FePlo” and [(CSMe,),Fe]) from LIP5, LiC,Me,, and FeCI,;[’I 3 is identical with the compound recently obtained by Scherer et al.‘”] by cothermolysis of [(q5-CsMe5)Fe(C0)2], and P4.
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