Browse > Article
http://dx.doi.org/10.5012/bkcs.2011.32.8.2537

A Novel Al-Bridged Trinuclear Iron(II) Bis(imino)pyridyl Complex with Catalytic Ethylene Polymerization Behavior  

Long, Zerong (Xinjiang Uygur Autonomous Region Product Quality Supervision and Inspection Institute)
Li, Zhongquan (Tarim Oilfield)
Ma, Ning (State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou institute of Chemical Physics, Chinese Academy of Sciences)
Wu, Biao (State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou institute of Chemical Physics, Chinese Academy of Sciences)
Publication Information
Bulletin of the Korean Chemical Society / v.32, no.8, 2011 , pp. 2537-2543 More about this Journal
Abstract
A self-assembled Al-bridged diiminopyridine-based ligand (3) was synthesized and characterized by FT-IR, ESI-MS and NMR spectroscopy. Electron spectral titrations were performed to confirm the formation of a novel trinuclear bis(imino)pyridyl iron(II) complex (4) upon addition of $FeCl_2$ into Al-bridged ligand 3 in methanol solution. Simultaneously, a typical bis(imino)pyridine-iron(II) complex (2) was synthesized and fully characterized. The X-ray crystal study of the iron(II) complex 2 disclosed a five-coordinate, distorted square-pyramidal structure with the tridentate N^N^N ligand and chlorides. The optimal molecular structure of 4 was obtained by means of molecular mechanics, which showed that each iron atom in the complex 4 is surrounded by two chlorides, a tridentate N^N^N ligand and one oxygen atom, supporting considerations about the possibility of six-coordinate geometry from MMAO or the ethylene access. A comparison of 4 with the reference 2 revealed a remarkable decrease of the catalytic activity and MMAO consumption (activity up to $0.41{\times}10^3\;kg\;{mol_{Fe}}^{-1}h^{-1}bar^{-1}$, Al/Fe = 650 for 4 and $7.02{\times}10^3\;kg\;{mol_{Fe}}^{-1}h^{-1}bar^{-1}$, Al/Fe = 1600 for 2).
Keywords
Self-assembly; Trinuclear iron(II) bis(imino)pyridyl complex; Ethylene polymerization; Structure modeling;
Citations & Related Records

Times Cited By Web Of Science : 0  (Related Records In Web of Science)
Times Cited By SCOPUS : 0
연도 인용수 순위
  • Reference
1 Lii, J.-H.; Allinger, N. L. J. Am. Chem. Soc. 1989, 111, 8576.   DOI
2 Barbaro, P.; Bianchini, C.; Giambastiani, G.; Rios, I. G.; Meli, A.; Oberhauser, W.; Segarra, A. M.; Sorace, L.; Toti, A. Organometallics 2007, 26, 4639.   DOI   ScienceOn
3 Meyer, M.; Kersting, B.; Powers, R. E.; Raymond, K. N. Inorg. Chem. 1997, 36, 5179.   DOI   ScienceOn
4 Kersting, B.; Meyer, M.; Powers, R. E.; Raymond, K. N. J. Am. Chem. Soc. 1996, 118, 7221.   DOI   ScienceOn
5 Hou, Z.; Sunderland, C. J.; Nishio, T.; Raymond, K. N. J. Am. Chem. Soc. 1996, 118, 5148.   DOI   ScienceOn
6 Enemark, E. J.; Stack, T. D. P. Inorg. Chem. 1996, 35, 2719.   DOI   ScienceOn
7 Enemark, E. J.; Stack, T. D. P. Angew. Chem. Int. Ed. Engl. 1995, 34, 996.   DOI   ScienceOn
8 Albrecht, M.; Mirtschin, S.; de Groot, M.; Janser, I.; Runsink, J.; Raabe, G.; Kogej, M.; Schalley, C. A.; Froehlich, R. J. Am. Chem. Soc. 2005, 127, 10371.   DOI   ScienceOn
9 Haino, T.; Shio, H.; Takano, R.; Fukazawa, Y. Chem. Commun. 2009, 2481.
10 Long, Z.; Yang, P.; Xia, Y.; Yang, Z.; Wu, B. Tetra. Lett. 2009, 50, 1820.   DOI   ScienceOn
11 Carver, F. J.; Hunter, C. A.; Livingstone, D. J.; McCabe, J. F.; Seward, E. M. Chem. Eur. J. 2002, 8, 2848.
12 Addison, A. W.; Rao, T. N.; Reedijk, J.; van. Rijn, J.; Verschoor, G. C. J. Chem. Soc. Dalton Trans. 1984, 1349.
13 Britovsek, G. J. P.; Bruce, M.; Gibson, V. C.; Kimberley, B. S.; Maddox, P. J.; Mastroianni, S.; McTavish, S. J.; Redshaw, C.; Solan, G. A.; Stromberg, S.; White, A. J. P.; Williams, D. J. J. Am. Chem. Soc. 1999, 121, 8728.   DOI   ScienceOn
14 Seitz, M.; Milius, W.; Alt, H. G. J. Mol. Cat A: Chem. 2007, 261, 246.   DOI   ScienceOn
15 Garcia-Cuesta, M. C.; Lozano, A. M.; Melendez-Martínez, J. J.; Luna-Giles, F.; Ortiz, A. L.; Gonzalez-Mendez, L. M.; Cumbrera, F. L. J. Appl. Cryst. 2004, 37, 993.
16 Britovsek, G. J. P.; Mastroianni, S.; Solan, G. A.; Baugh, S. P. D.; Redshaw, C.; Gibson, V. C.; White, A. J. P.; Williams, D. J.; Elsegood, M. R. J. Chem. Eur. J. 2006, 6, 2221.
17 Britovsek, G. J. P.; Gibson, V. C.; Wass, D. F. Angew. Chem. Int. Ed. 1999, 38, 428.   DOI   ScienceOn
18 Ittel, S. D.; Johnson, L. K.; Brookhart, M. Chem. Rev. 2000, 100, 1169.   DOI   ScienceOn
19 Gibson, V. C.; Redshaw, C.; Solan, G. A. Chem. Rev. 2007, 107, 1745.   DOI   ScienceOn
20 Yoshizawa, M.; Tamura, M.; Fujita, M. Science 2006, 312, 251.   DOI   ScienceOn
21 Abraham, S.; Ha, C.-S.; Kim, I. Macromol. Rapid Commun. 2006, 27, 1386.   DOI   ScienceOn
22 Liu, J.; Li, Y.; Liu, J.; Li, Z. Macromolecules 2005, 38, 2559.   DOI   ScienceOn
23 Wasilke, J.-C.; Obrey, S. J.; Baker, R. T.; Bazan, G. C. Chem. Rev. 2005, 105, 1001.   DOI   ScienceOn
24 Zhang, S.; Vystorop, I.; Tang, Z.; Sun, W.-H. Organometallics 2007, 26, 2456.   DOI   ScienceOn