Clathrochelates

Complexes containing encapsulated metal ions (clathrochelates ) with the formula [M(dioxime)3(BR)2] are known with iron(II) 135, cobalt(ll) 136, cobalt(III) 137, and ruthenium(ll) 138 (Fig. 37) [205-220]. Generally, these macrobicyclic complexes are prepared by template synthesis from a mixture of... 

Fig. 37. [M(dioxime)3(BR)2] complexes 135-138 contain encapsulated metal ions and are clathrochelates. The coordination geometry of the metal ion is described by the distortion angle 4>...

Two interesting monoborylated clathrochelates 139 and 140 are known (Fig. 38), in which three oxime functions are joined together by a BR group, while the other half of the ligand is capped by a carbon or a phosphorus atom, respectively. 

The boron-capped transition metals macrobicyclic clathrochelates also belong to the family of compounds containing a ring-junction boron atom. Their main types 177a-d are shown in Figure 18 and the corresponding references are presented in Table 12. 

In most cases the symmetric boron-capped clathrochelates have been synthesized by template condensation on a metal ion matrix as, for instance, is shown in Scheme 68 <2005MI3>. 

Table 12 Literature on boron-capped transition metals macrobicyclic clathrochelates...

Y. Z. Voloshin, N. A. Kostromina, and R. Kramer Clathrochelates Synthesis, Structure and Properties , Elsevier,... 

CLATHROCHELATED METAL PERCHLORATES, HYDRAZINEMETAL NITRATES METAL PERCHLORATES organic ligands, POLYAZACAGED METAL PERCHLORATES SOLVATED OXOSALT INCIDENTS, URANYL MACROCYCLIC PERCHLORATE LIGANDS... 

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