Synthesis and characterization of dinuclear monohydro sesquifulvalene complexes with potential NLO properties
摘要:
E-1-(1"-hydroxycarbonylferrocen-1'-yl)-2-(cycloheptatrienyl)ethene (4) was synthesized by using selective transmetallation reactions. Reaction of 4 with [Cp*Ru(CH3CN)(3)](PF6) revealed the vinylogue monohydro sesquifulvalene complex E-1-(1"-hydroxycarbonylferrocen-1'-yl)-2-{(1"'-6"'-eta-cyclohepta-1"',3"',5"'-trien- 1"'-yl)(eta(5) -pentamethylcyclopentadienyl)ruthenium(II)ethene hexafluorophosphate (5). X-ray structure analysis demonstrates that complex 5 crystallizes in the triclinic space group P (1) over bar, which forms discrete dimers via two hydrogen bonds between the carboxylic functions. Reaction of complex 5 with triethylamine or NaHCO3 generated a new organometallic zwitterion E-1-(1"-oxycarbonylferrocen-1'-yl)-2-{(1"'-6"'-eta-cyclohepta-1"',3"',5"'-trien-1"'-yl)(eta(5)-pentamethylcyclopentadienyl)ruthenium(II)ethene (6), which was characterized by UV, IR, and NMR spectra. (c) 2005 Elsevier B.V. All rights reserved.