26.12.2012 Views

2 Homometallic Alkoxides

2 Homometallic Alkoxides

2 Homometallic Alkoxides

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

535<br />

[Cp Ł Th(OAr)⊲CH2SiMe3⊳2]<br />

three-legged piano stool<br />

OC6H3But 2-2,6, 2.186 (6) 171 vi<br />

[Cp Ł Th⊲OC6H3But-CMe2CH2⊲OAr⊳⊲OPPh2⊳] distorted tbp, Cp Ł and cyclometallated O axial<br />

OC6H3But 2-2,6 OC6H3But-CMe 2 [fU2⊲OAr⊳3⊲thf⊳g2fU(O) 2⊲thf2g⊲ 2-OAr⊳4⊲ 3-O⊳]<br />

tetrameric unit, two U(V) andtwoU(VI) atoms.<br />

CH2<br />

OC6H5<br />

2-OC6H5<br />

2.205 (7)<br />

2.192 (6)<br />

2.03 (2)<br />

2.08 (2)<br />

2.12 (2)<br />

2.46 (2), 2.33 (2)<br />

2.40 (2), 2.42 (2)<br />

163<br />

148<br />

174<br />

164<br />

158<br />

vi<br />

vii<br />

[U(OAr) 4⊲dmpe⊳2]<br />

dodecahedron<br />

OC6H5<br />

2.16 (1)<br />

2.17 (1)<br />

166<br />

164<br />

viii<br />

2.18 (1)<br />

162<br />

2.18 (1)<br />

167<br />

[U(OAr) 3⊲NEt2⊳]<br />

tetrahedral U<br />

OC6H3But 2-2,6 2.140 (4)<br />

2.146 (4)<br />

149<br />

163<br />

ix<br />

2.143 (4)<br />

150<br />

[U2⊲O- 6-Ar⊳2⊲OAr⊳4] two 3-coord. U held together by 6-phenoxy interactions<br />

OC6H3Pri 2-2,6 O- 6-C6H3Pri 2-2,6 [U(OAr) 4]<br />

tetrahedral U<br />

OC6H3Bu<br />

2.132 (8)<br />

2.214 (7)<br />

165<br />

157<br />

x<br />

t 2-2,6 2.135 (4) 154 i, xi<br />

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

tetrahedral U<br />

OC6H3But 2-2,6 2.092 (8)<br />

2.102 (8)<br />

170<br />

160<br />

xii<br />

2.114 (11)<br />

170<br />

[U(OAr) 2I2(THF)]<br />

tbp, axial THF and OAr<br />

OC6H3But 2-2,6 2.080 (8)<br />

2.073 (9)<br />

173<br />

166<br />

xii<br />

[(ArO) 3U⊲ 2-S⊳U(OAr) 3].OEt2<br />

distorted, non tetrahedral geometry about U<br />

OC6H3But 2-2,6 2.079 (9)<br />

2.125 (8)<br />

172<br />

174<br />

xii<br />

2.119 (6)<br />

172<br />

[Cp Ł<br />

2U(O)(OAr)] OC6H3Pri [U(OAr)fN⊲SiMe3⊳2g3]<br />

tetrahedral U<br />

2-2,6 OC6H3Bu<br />

2.135 (5) 170 xiii<br />

t 2-2,6 2.145 (8) 159 i<br />

[(thf) 4K][U(OAr) 2Cl3]<br />

tbp U with trans OAr, infinite chain held together by<br />

UCl–K–ClU interactions<br />

OC6H3But 2-2,6 2.122 (6)<br />

2.123 (6)<br />

155<br />

153<br />

xiv<br />

(continued overleaf )

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!