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2 Homometallic Alkoxides

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542<br />

Table 6.21 (Continued)<br />

Bond length ( ˚A) Bond angle ( Ž )<br />

Compound Aryloxide M–O M–O–Ar Ref.<br />

[Ti(OAr) 2Cl2]<br />

octahedral Ti, cis Cl and OMe<br />

[Ti⊲ -Cl)(OAr)Cl2]2 edge-shared bis-octahedron, O trans to -Cl<br />

[Ti(OAr) 3I]<br />

tetrahedral Ti<br />

[Ti(OAr)Cl⊲ 2-Cl⊳2]n<br />

6-coord. Ti, polymeric structure<br />

[fPr i O⊳⊲Pr i OH⊳⊲ArO⊳2Ti⊲ 2-OAr⊳g2]<br />

edge-shared bis-octahedron, one OAr and Pr i OH<br />

trans to 2-OAr<br />

[f⊲Pr i O⊳2(ArO)Ti⊲ 2OPr i ⊳g2]<br />

edge-shared bis-octahedron, one OAr and Pr i OH<br />

trans to 2-OPr i<br />

2-OC6H4OMe-2 1.858 (2)<br />

124<br />

xx<br />

1.862 (3)<br />

122<br />

2-OC6H4OMe-2 1.804 (2) 127 xx<br />

OC6H3But 2-2,6 1.810 (9)<br />

1.802 (7)<br />

1.782 (8)<br />

159<br />

155<br />

158<br />

OC6H5 1.746 (4) 165 xxii<br />

Mixed aryloxy alkoxides, amides, etc.<br />

OC6F5<br />

1.894 (8)<br />

139<br />

xxiii<br />

1.833 (7)<br />

151<br />

2-OC6F5<br />

2.050 (7), 2.164 (7)<br />

OC6H2Me3-2,4,6 xxiv<br />

[f⊲PriO⊳(ArO) 2Ti⊲ 2-OAr⊳g2]<br />

edge-shared bis-octahedron, one OAr chelated<br />

OC6H3F2-2,6<br />

1.802 (5)<br />

1.867 (6)<br />

169<br />

126<br />

xxiv<br />

through ortho-F<br />

[Ti(OAr) 2⊲OCH2SiMe3⊳2]<br />

2-OC6H3F2-2,6<br />

OC6H3Np2-2,6 2.043 (5), 2.054 (5)<br />

1.790 (4)<br />

1.815 (5)<br />

164<br />

151<br />

xxv<br />

[Ti(OAr) 2(acac) 2]<br />

6-coord. Ti<br />

OC6H3Pri 2-2,6 1.834 (5) 162 xxvi<br />

[Ti(OAr) 2⊲NMe2⊳2]<br />

tetrahedral Ti<br />

OC6H2But 3-2,4,6 1.813 (4)<br />

1.860 (3)<br />

171<br />

152<br />

xxvii<br />

[Ti(OAr) 2⊲NMe2⊳2]<br />

tetrahedral Ti<br />

OC6H3But 2-2,6 1.808 (2)<br />

1.828 (2)<br />

177<br />

175<br />

xxviii<br />

xxi

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