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Dianionic Homoleptic Biphosphinine Complexes of Group 4 Metals

✍ Scribed by Patrick Rosa; Nicolas Mézailles; Louis Ricard; François Mathey; Pascal Le Floch

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
139 KB
Volume
112
Category
Article
ISSN
0044-8249

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✦ Synopsis

A solution of 1 a (0.1 g, 0.2 mmol) in hexane (10 mL) was very slowly evaporated to dryness under vacuum. Hexane (10 mL) was added to the residue, giving an orange precipitate corresponding to the dimer 2 a; the monomer 1 a remained in solution. The solution was filtered off and then retreated with hexane to afford a new fraction of 2 a. The process was repeated three times; yield 70 % (0.07 g). The yield can be improved by repeating the process as many times as possible. Crystals suitable for X-ray diffraction were grown from a solution in CH 2 Cl 2 /hexane. Elemental analysis calcd for C 64

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