II and Cobalt III Clathrochelates Derived from Dioximes

IRON(II) AND COBALT(III) CLATHROCHELATES DERIVED FROM DIOXIMES 

Clathrochelates comprise a new type of coordination compound containing a metal ion both coordinately saturated and encapsulated by a single ligand.1 5 The ligands of one class of clathrochelates are derived from dioximes and various boron compounds.1,4 Typical examples of iron and cobalt clathrochelates of this structural class are shown in Fig. 19 and Table I. These complexes are readily prepared from iron(II) or cobalt(II) salts, 

Snbmitted by S. C. JACKELS, J. ZEKTZER, and N. J. ROSE Checked by VIRGIL L. GOEDKENt and ROY CHAPMANt 

The reagents used in the syntheses described below were obtained commercially as reagent grade and were used without further purification. All preparations were carried out in flasks open to the atmosphere. The recrystallized products were dried for ca. 12 hr at about 1 torr over Drierite or P 401 o- 

An Erlenmeyer flask (125-mL) is charged with anhydrous cobalt(II) dichloride (1.30 g, 0.01 mol), dimethylglyoxime, (H2dmg) (3.48 g, 0.03 mol) 

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Iron(II) and Cobalt(III) Clathrochelates Derived from Dioximes 141... 

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