New building blocks for the noncovalent assembly of homo- and hetero-multinuclear metallodendrimers

Organometallics

Volumn 16, Issue 20, 1997, Pages 4287-4291

  Huck, Wilhelm T S ^a   Snellink Ruël, Bianca ^a   Van Veggel, Frank C J M ^a   Reinhoudt, David N ^a  

^a UNIVERSITY OF TWENTE   (Netherlands)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0001067649     PISSN: 02767333     EISSN: None     Source Type: Journal    
DOI: 10.1021/om970424a     Document Type: Article

References (32)

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19. For catalytically active dendrimers, see: Knapen, J. W.; van der Made, A. W.; de Wilde, J. C.; van Leeuwen, P. W. N. M.; Wijkens, P.; Grove, D. M.; van Koten, G. Nature 1994, 372, 659.
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21. Hattori, T.; Sakamoto, J.; Hayashizaka, N.; Miyano, S. Synthesis 1994, 199.
22. 2 (cod = 1,5-cyclooctadiene) did not give any cyclometalated products. The only difference with the ligands used in the literature is that ligands 5 and 8 all have para ether functions. Apparently, the electron-donating properties of this substituent deactivate the C-H bond toward insertion by the transition metal.
23. Loeb, S. J.; Shimizu, G. K. H. J. Chem. Soc., Chem. Commun. 1993, 1395.
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26. 2] should lead in one step to the desired Pt-Cl complex. However, no reaction took place even after refluxing for 48 h. Anklin, C. G.; Pregosin, P. S.; Wombacher, F. J.; Rüegg, H. J. Organometallics 1990, 9, 1953.
27. Launay, N.; Caminade, A.-M.; Lahana, R.; Majorai, J.-P. Angew. Chem., Int. Ed. Engl. 1994, 33, 1589. Galliot, C.; Prévoté, D.; Caminade, A.-M.; Majorai, J.-P. J. Am. Chem. Soc. 1995, 117, 5470.
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29. 1,NiNi. The complexes are sensitive toward oxidation in solution, and future experiments will be carried out under rigorous exclusion of air during the assembly process.
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32. +. Apparently, the ligand was not washed sufficiently with water to remove all of the NaCl. However, this did not hamper further reactions.