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2 Homometallic Alkoxides

2 Homometallic Alkoxides

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503<br />

Table 6.8 Metal bi-phenolates<br />

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

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

[La(di-OAr)fCH(SiMe3⊳2g⊲THF⊳3] 6-coord. La, OAr trans to THF<br />

[Cl2Ti(di-OAr) 2TiCl2]<br />

bi-phenoxide terminally bound to each 4-coord. Ti<br />

[ClTi(di-OAr) 3TiCl]<br />

bi-phenoxide terminally bound to each 4-coord. Ti<br />

[⊲PriO⊳2Ti⊲ 2-di-OAr⊳2Ti⊲OPr i ⊳2]<br />

4-coord. Ti atoms held by bridging OAr<br />

[Ti(di-OAr)⊲CH2Ph⊳2].0.5Et2O<br />

tetrahedral Ti<br />

2,2 0 -⊲OC6H2Bu t 2 -3,5⊳2<br />

2,2 0 -⊲OC6Me2-4,6-Cl2-3,5⊳2<br />

2,2 0 -⊲OC6Me2-4,6-Cl2-3,5⊳2<br />

2-2,2 0 -⊲OC6Me2-4,6-Cl2-3,5⊳2<br />

2,2 0 -⊲OC6H3Bu t -6-OMe-4⊳2<br />

2.271 (9)<br />

2.216 (7)<br />

1.762 (5)<br />

1.757 (5)<br />

1.778 (5)<br />

1.760 (5)<br />

1.769 (5)<br />

1.858 (5)<br />

1.867 (5)<br />

1.799 (7)<br />

1.821 (8)<br />

[Mo(NC 6H3Me2-2,6⊳⊲DCHCMe2Ph⊳⊲di-OAr⊳] 2,2 0 -⊲OC6HMe-6-Bu t 2 -3,5⊳2 1.990 (6)<br />

[Mn2⊲ 2-di-OAr⊳2⊲Hdi-OAr⊳⊲bipy⊳2]<br />

5- and 6-coord. Mn, bridging 2,2 0 -biphenoxide<br />

terminally bound to same Mn, monodentate<br />

2,2 0 -biphenoxide bound to other Mn<br />

[NEt3H]2[Mn(di-OAr⊳2⊲Hdi-OAr⊳]<br />

tbp Mn, one monodentate 2,2 0 -biphenoxide<br />

[Me4N]4[Mn10⊲ 2- 2-di-OAr⊳4⊲O⊳4Cl12]<br />

Mn6O4 adamantyl framework, 5- and 6-coord. Mn<br />

2,2 0 -⊲OC6H4⊲HOC6H4⊳<br />

2-2,2 0 -⊲OC6H4⊳2<br />

2,2 0 -⊲OC6H4⊳2<br />

2,2 0 -⊲OC6H4⊳⊲HOC6H4⊳<br />

2- 2-2,2 0 -⊲OC6H4⊳2<br />

2.003 (6)<br />

2.04 (1)<br />

1.87 (1)<br />

1.88 (1)<br />

2.13 (1), 1.954 (1)<br />

2.11 (1), 2.13 (1)<br />

1.89 (1)<br />

1.984 (9)<br />

1.88 (1)<br />

1.987 (9)<br />

1.91 (2) (av.)<br />

2.14 (1) (av.)<br />

2.18 (2) (av.)<br />

135<br />

133<br />

168<br />

168<br />

152<br />

152<br />

153<br />

129<br />

132<br />

130<br />

110<br />

97<br />

104<br />

138<br />

117<br />

122<br />

123<br />

118<br />

116<br />

126<br />

i<br />

ii<br />

ii<br />

ii<br />

iii<br />

iv<br />

v, vi<br />

vi<br />

vii<br />

(continued overleaf )

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