Building Functionality into 4′‐Hydrazone Derivatives of 2,2′: 6′,2″‐Terpyridine |
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| Authors: | Jonathon?E Beves Edwin?C Constable Catherine?E Housecroft Markus Neuburger Silvia Schaffner Jennifer?A Zampese |
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| Institution: | 1. Department of Chemistry, University of Basel, Spitalstrasse 51, CH‐4056 Basel, (phone: +41‐61‐2671008;2. fax: +41‐61‐2671018) |
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| Abstract: | The syntheses of the five 2,2′: 6′,2″‐terpyridine (tpy) ligands 5 – 9 functionalized in the 4′‐position with a hydrazone substituent RR′C?N? NH (R=R′=Me; R=H, R′=4‐BrC6H4, 4‐O2NC6H4, 4‐MeOC6H4, or 3,5‐(MeO)2C6H3) are described. Protonation of the tpy domain of the ligands is facile. Solution behaviour has been studied by NMR and electronic spectroscopies. Representative structural data are presented for neutral and monoprotonated ligands, and illustrate that H‐bonding involving the formal amine NH unit is a dominant structural motif in all cases. |
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| Keywords: | 2 2′ : 6′ 2″ ‐Terpyridine Hydrazone Hydrogen bond X‐Ray crystallography |
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