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2 Homometallic Alkoxides

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582<br />

Table 6.26 (Continued)<br />

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

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

[Ta(OAr) 3⊲OCH2Ph⊳⊲CPhDCPhCPhDO⊳] OC6H3Pri 2-2,6 1.915 (2)<br />

1.918 (2)<br />

173<br />

159<br />

li<br />

[TaCl(OAr) 2⊲ 2-2,4,6-But 3-py⊳] OC6H3Pri 2-2,6 1.860 (6)<br />

1.877 (6)<br />

165<br />

162<br />

lii, liii<br />

[Ta⊲OC6H3MeBut-CMe2CH2⊳Cl2⊲DCH2But⊳] OC6H3But [Ta(OAr) 3⊲<br />

-CMe2CH2 1.852 (3) 148 liv<br />

2-PhC CPh⊳] OC6H3Pri 2-2,6 1.889 (2)<br />

1.912 (2)<br />

157<br />

148<br />

lv<br />

1.869 (2)<br />

159<br />

[Ta(OAr) 3⊲ 2-6-Mequin)⊲PMe3⊳] OC6H3Pri 2-2,6 1.943 (7)<br />

1.904 (7)<br />

156<br />

158<br />

lvi<br />

1.894 (7)<br />

174<br />

[Ta(OAr) 2Cl⊲DCButCHDCHCBu t ⊳] OC6H3Pri 2-2,6 1.89 (3)<br />

1.89 (3)<br />

173<br />

157<br />

lvii<br />

[Ta(OAr) 2⊲DNButDCHCBu t -CHCHBu t ⊳] OC6H3Pri 2-2,6 1.877 (7)<br />

1.909 (8)<br />

160<br />

155<br />

lvi<br />

[Ta(OAr) 2Cl2f 2-ArNC⊲PMe3⊳Hg] OC6H3Pri 2-2,6 1.896 (3)<br />

1.894 (3)<br />

149<br />

150<br />

lviii<br />

[Ta(OAr) 2Cl2f⊲ButNC⊳3Hg] OC6H3Pri [Cp<br />

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

1.854 (2)<br />

159<br />

165<br />

lviii<br />

Ł Ta⊲OC6H3Me–CH2⊳⊲CH2SiMe3⊳2]<br />

mono-cyclometallated OAr<br />

OC6H3Me-CH2 1.971 (3) 124 lix<br />

[Cp Ł Ta(OAr)Cl3]<br />

square pyramidal Ta, axial Cp Ł<br />

OC6H3Ph2-2,6-But 2-3,5 1.902 (3) 150 x<br />

[Ta(OAr) 2⊲ 2-PhCHDCH2⊳⊲Cl⊳⊲PMe3⊳] 2 Square pyramid, trans Oandaxial-PhCHDCH2 [Ta(OAr) 2⊲<br />

OC6H3Ph2-2,6 1.895 (3)<br />

1.915 (3)<br />

175<br />

166<br />

lx<br />

2-EtCCEt⊳Cl⊲PMe3⊳] OC6H3Ph-2,6 1.926 (2)<br />

1.913 (2)<br />

161<br />

171<br />

xxxiv<br />

[Ta(OAr)⊲OC6H3ButCMe2CH2- 2- CDNxy⊳⊲PhCHCH- 2-CDNxy⊳Cl] OC6H3But 2-2,6 OC6H3ButCMe2CH2- 2-CDNCH2Ph 1.936 (7)<br />

1.960 (8)<br />

153<br />

149<br />

xxxiv

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