Iterative synthesis of oligoynes capped by a Ru-2(ap)(4)-terminus and their electrochemical and optoelectronic properties

作者：Xu GL; Wang CY; Ni YH; Goodson TG^*; Ren T

来源：Organometallics, 2005, 24(13): 3247-3254.

DOI：10.1021/om050171i

Cross-coupling reactions between terminal ethynes (HC-CY) and Ru-2(ap)(4)(C2(k-1)H) under Hay conditions, where ap is 2-anilinopyridinate and k = 2-5, resulted in compounds Ru2-(ap)(4)(C2kY) (Y = (SiPr3)-Pr-i and Ph) along with the homocoupling products YC4Y and [Ru-2(ap)(4)](2)-(mu-C4(k-1)). Compounds Ru-2(ap)(4)(C2kY) display two reversible RU2-based one-electron couples: an oxidation and a reduction. The HOMO-LUMO gaps (E-g) estimated from electrode potentials correlate linearly with the number of acetylenic bonds (k) within each series. Both nonlinear absorption and degenerate four-wave mixing measurements were carried out at both 532 and 800 nm with nano- and femtosecond laser pulses.

• 出版日期2005-6-20