کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1321857 | 1499836 | 2016 | 7 صفحه PDF | دانلود رایگان |
• Modified “picket fence” porphyrin and iron carbonyl derivatives are synthesized.
• The smallest FeCO angle of 172.10(13)° is a result of the rare carbonyl disorder.
• Interactions found between terminal oxygen of CO and carbon atoms of the pickets.
A new modified “picket fence” porphyrin is synthesized and its six-coordinate iron(II) carbonyl derivatives [Fe(MmacTpivPP)(CO)(Py)] and [Fe(MmacTpivPP)(CO)(1-MeIm)] are characterized by single-crystal X-ray, UV-vis and IR spectroscopies. X-ray structural determinations revealed that both [Fe(MmacTpivPP)(CO)(Py)] and [Fe(MmacTpivPP)(CO)(1-MeIm)] are crystallized in the C2/c space group with 2-fold axes passing through the Fe atoms. The FeCO angle of [Fe(MmacTpivPP)(CO)(Py)] is as small as 172.1°, contrasted to 180° of the same angle in [Fe(MmacTpivPP)(CO)(1-MeIm)]. Short intramolecular interactions are found between the terminal oxygen atom of CO and the carbon atoms of the pickets in [Fe(MmacTpivPP)(CO)(Py)]. The characteristic CO stretching frequencies (νCO) of the two complexes are same at 1965 cm−1.
Iron(II) porphyrin complexes [Fe(MmacTpivPP)(CO)(Py)] and [Fe(MmacTpivPP)(CO)(1-MeIm)] were characterized. The smallest FeCO angle of 172.10(13)° is observed in the structure of [Fe(MmacTpivPP)(CO)(Py)], which is a result of the rare carbonyl disorder and attributed to the intramolecular interactions between the terminal oxygen atom of CO and carbon atoms of the pickets.Figure optionsDownload as PowerPoint slide
Journal: Journal of Organometallic Chemistry - Volume 809, 1 May 2016, Pages 14–20