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2 Homometallic Alkoxides

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578<br />

Table 6.26 (Continued)<br />

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

Compound Aryloxide M–O M–O–Ar Reference<br />

[Ta(OAr) 2Me3]<br />

tbp Ta, axial ArO<br />

[Ta(OAr) 2⊲CH2Ph⊳3]<br />

tbp Ta, axial ArO<br />

[Ta(OAr) 2⊲CH2C6H4-4Me⊳3]<br />

tbp Ta, axial ArO<br />

[Ta(OAr) 2⊲CH2SiMe3⊳3]<br />

tbp Ta, axial ArO, two molecules<br />

[Ta(OAr) 2⊲CH2SiMe3⊳3]<br />

tbp Ta, axial ArO<br />

[Ta(OAr) 3⊲Ph⊳2]<br />

tbp Ta, axial ArO<br />

[Ta(OAr) 3⊲Ph⊳2]<br />

tbp Ta, axial ArO<br />

[Ta(OAr) 3⊲CH2SiMe3⊳2]<br />

tbp Ta, axial ArO<br />

[Ta⊲OAr⊳4Me]<br />

square pyramidal Ta, axial Me<br />

[Ta(OAr) 2Cl2⊲C6H11⊳]<br />

Ta-cyclohexyl, square pyramidal Ta, axial C, cis-O<br />

[Ta(OAr) 2Cl2⊲C5H9⊳]<br />

Ta-cyclopentyl, square pyramidal Ta, axial C, cis-O<br />

OC6H2But 2-2,6-OMe-4 1.925 (4) 153 xx<br />

OC6H3Me2-2,6 1.919 (4)<br />

151<br />

xxi<br />

1.887 (4)<br />

159<br />

OC6H3Ph2-2,6 1.903 (4)<br />

178<br />

xxii<br />

1.906 (4)<br />

167<br />

OC6HPh2-2,6-Me2-3,5 1.89 (1)<br />

178<br />

iv<br />

1.90 (1)<br />

165<br />

1.93 (1)<br />

175<br />

1.91 (1)<br />

164<br />

OC6HPh2-2,6-Pri 2-3,5 1.922 (3)<br />

1.908 (3)<br />

152<br />

150<br />

iv<br />

OC6H3Me2-2,6 1.848 (5)<br />

180<br />

xxiii<br />

1.879 (4)<br />

176<br />

OC6H3Pri 2-2,6 1.852 (3)<br />

1.881 (3)<br />

153<br />

165<br />

xxiii<br />

1.880 (3)<br />

166<br />

OC6H3Ph2-2,6 1.930 (3)<br />

153<br />

iv<br />

1.912 (3)<br />

159<br />

1.918 (3)<br />

152<br />

OC6H3Me2-2,6 1.899 (4) 158 xxi<br />

OC6H3Ph2-2,6 1.850 (3)<br />

1.911 (3)<br />

OC6H3Ph2-2,6 1.907 (4)<br />

1.854 (4)<br />

163<br />

145<br />

144<br />

164<br />

xxiv<br />

xxiv

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