129707-78-4Relevant articles and documents
Syntheses and spectroscopic characterization of (T(P-Me2N)F4PP)H2 and (7(p-Me2N)F4PP)M where 7(p-Me2N)F4PP is the dianion of meso-tetrakis(o,o,w,w-tetrafluoro-p-(dimethylamino)phenyl)-porphyrin and M = Co(II), Cu(II), or Ni(II)
Kadish,Araullo-McAdams,Han,Franzen
, p. 8364 - 8368 (2007/10/02)
The reaction of cobalt acetate with (TF5PP)H2 (where TF5PP = the dianion of meso-tetrakis(pentafluoro-phenyl)porphyrin) leads to the formation of different metalloporphyrin products depending on solvent. In acetonitrile, (TF5PP)Co is the expected and obtained product of metalation. In contrast, the reaction between (TF5PP)H2 and cobalt acetate in dimethylformamide leads to (T(p-Me2N)F4PP)Co where T(p-Me2N)F4PP = the dianion of meso-tetrakis(o,o,w,m-tetra-fluoro-p-(dimethylamino)phenyl)porphyrin. The formation of a dimethylamino-substituted complex in DMF is not unique to cobalt derivatives, and (T(P-Me2N)F4PP)H2, (T(P-Me2N)F4PP)Cu, or (T(P-Me2N)F4PP)Ni were synthesized from (TF5PP)H2 in almost 100% yield. Each T(p-Me2N)F4PP complex was isolated and characterized by 1H NMR, 19F NMR, and UV-visible spectroscopy as well as by mass spectrometry. These compounds provide the first examples for substituted tetraphenylporphyrins where the four phenyl rings contain both electron-withdrawing and electron-donating substituents. The pentafluoro-substituted Co(II) derivative, (TF5PP)Co, was also synthesized and spectroscopically characterized. In addition, both Co(II) porphyrins were analyzed by X-ray single-crystal diffraction. (TF5PP)Co crystallizes in the monoclinic space group I2/c, with a = 29.200 (13) ?, b = 6.552 (2) ?, c = 26.381 (10) ?, β = 104.13 (3)°, and Z = 4 while (T(p-Me2N)F4PP)Co is found to crystallize in the triclinic space group P1? with a = 13.638 (9) ?, b = 14.645 (8) ?, c = 16.677 (9) ?, α = 79.98 (4)°, β= 77.89 (5)°, γ = 65.92 (4)°, and Z = 2.