Models for Copper-Dioxygen Complexes: The chemistry of copper(II) with some planar tridentate nitrogen ligands

✍ Scribed by Claude Piguet; Bernard Bocquet; Edgar Müller; Alan F. Williams

• Publisher: John Wiley and Sons
• Year: 1989
• Tongue: German
• Weight: 940 KB
• Volume: 72
• Category: Article
• ISSN: 0018-019X
• DOI: 10.1002/hlca.19890720218

✦ Synopsis

Experimental. ~ Unless otherwise stated, solvents and starting materials were purchased from FIuka (Switzerland) and used without further purification.

Preparution qfligunds. bzimpy (1) and bzthpy (3) were prepared according to the procedure described in [13], and this method was also applied to the synthesis of bzoxpy (4) obtained in good yield (5 1 %). The yields are greatly increased, if mechanical stirring is applied during the reaction. All ligdnds were fully characterized by their IR, 'H-NMR, and ELMS ( M + : bzimpy, 31 1; bzthpy, 345; bzoxpy, 313). mbzimpy (2) was prepared under N, using Schlenek techniques. Tetramethylurea (TMU) and pentane were previously distilled from NaH under N,. Compound 1 (4.0 g, 12.9 mmol) was dissolved in 30 ml of dry TMU. NaH (oil dispersion 58 %; 1.62 g, 38.8 mmol) was washed with 5 x 10 ml of dry pentane and then suspended in 30 mi of dry TMU. This suspension was added to the