Silicon complexes octacoordinate

TABLE 27. X-ray crystallographic and 29Si NMR data for hepta- and octacoordinate silicon complexes and tetravalent model compounds... 

Formal octacoordination ( 4 + 4 )229 in a silicon complex was recently demonstrated by Corriu s group, who prepared 201 (equation 53). The Si-N distances (Table 27) are long relative to those common in penta- and hexacoordinate compounds, but are in the same range as those found in the heptacoordinate compounds discussed here. Also, the geometry resembles the heptacoordinate complexes, in that it is basically a tetrahedron with dimethylamino donor groups pointing toward the center, in what may be termed a tetracapped tetrahedron . 

---

See also in sourсe #XX -- [ , , ]

See also in sourсe #XX -- [ , , ]

---