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• W2000310577 abstract "The titanocene-bis(trimethylsilyl)acetylene complexes Cp'2Ti[η2-C2(SiMe3)2] (Cp' = C5H5, C5HMe4, and C5Me5) react with 2,2'-bi-pyridine (bpy) to give the corresponding Cp'2Ti(bpy) complexes 1–3. EPR evidence of the electronic triplet state in 1–3 implies the transfer of one of the Ti d2 electrons to the bpy ligand. An analogous electron transfer to 4,5-diazafluorene (dafH) affords (4,5-diazafluorenyl)titanocene (TiIII) complexes Cp'2Ti(daf) (Cp' = C5H5 (4), C5HMe4 (5), and C5Me5 (6)) with a release of one hydrogen atom from the sp3 carbon atom of the ligand. EPR spectra of 4–6 in toluene solutions are characterized by g = 1.9798–1.9820, coupling to 47Ti and 49Ti isotopes aTi = 11.9–12.6 G, and for 4 and 6 also by the coupling to two equivalent nitrogen atoms an = 2.0 G. Rhombic g-tensors with gav in the range 1.981–1.982 were obtained in frozen toluene glass. The X-ray crystal structure of 6 (monoclinic, P21/c (No. 14), a = 11.7309(9) Å, b = 14.7075(10) Å, c = 14.7893(11) Å, β = 94.68(6)°, V = 2543.1(4) Å3, Z = 4) proved that both nitrogen atoms of an approximately planar 4,5-diazafluorenyl ligand coordinate to a pseudotetrahedrally coordinated titanium atom. The electronic absorption spectra of 4–6 in solution showed a well-resolved vibrational structure of the (daf)− anion with positions of all vibronic bands shifted to longer wavelength by ca. 20–30 nm, and a low intensity band probably of the d-d transition in the range 820–940 nm." @default.
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• W2000310577 date "1996-07-01" @default.
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• W2000310577 title "Electron transfer in the reactions of titanocene-bis(trimethylsilyl) acetylene complexes with 2,2'-bipyridine and 4,5-diazafluorene. The crystal structure of (4,5-diazafluorenyl) bis(pentamethylcyclopentadienyl) titanium(III)" @default.
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• W2000310577 doi "https://doi.org/10.1016/s0022-328x(96)06209-2" @default.
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