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2 Homometallic Alkoxides

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513<br />

Table 6.11 Sodium aryloxides<br />

Bond length ( ˚A)<br />

Compound Aryloxide M–O Ref.<br />

[⊲ArO⊳(DMSO)Na⊲ 2-DMSO⊳2Na(DMSO)(OAr)]<br />

unusual structure with bridging DMSO<br />

[⊲Na(OAr)]n<br />

stacked N2O2 rings; held together by intermolecular<br />

Na–O andNa--arene bonds<br />

[Na6⊲ 4-OAr⊳2⊲ 3-OAr⊳4⊲THF⊳6]<br />

two face-fused cubes, 4- and 5-coord. Na<br />

[Na⊲ 3-OAr⊳⊲tmu⊳]4<br />

regular cube, 4-coord. Na, tetramethyl urea<br />

[Na⊲ 6-OAr⊲OH2⊳3]n phenoxide -bound to Na and hydrogen bonded to H2O ligands.<br />

[Na⊲ 2-OAr⊳⊲OH2⊳]n<br />

4-coord. Na<br />

[Na⊲ 3-O- 6-Ar⊳]n each Na bound to 3 O-atoms and -bound to a phenoxide ring<br />

[Na⊲ 3-OAr⊳⊲DME⊳]4<br />

regular cube, 5-coord. Na<br />

[Na⊲ 3-OAr⊳⊲nmc⊳]4<br />

regular cube, 4-coord Na, N -methyl-caprolactam<br />

[Na⊲ 3-OAr⊳]4<br />

Na4O4 regular cube, 5-coord. Na<br />

[Na6⊲ 4-OAr⊳2⊲ 3-OAr⊳4]<br />

two face-fused cubes, 4- and 5-coord. Na<br />

[⊲HOAr⊳Na⊲ 2-OAr⊳2Na(HOAr)]<br />

5-coord. Na<br />

[Na4⊲di- 3-OAr⊳2⊲DME⊳2]<br />

regular cube, 5-coord. Na<br />

[Na⊲ 2-OAr⊳⊲THF⊳2]2<br />

planar Na2O2 ring, 4-coord. Na<br />

[(dicyclohexano-18-crown-6) 2Na4⊲ 2-OAr⊳4]<br />

4- and 7-coord. Na<br />

OC6H3But 2-2,6 2.144 (5) i<br />

OC6H5 2.328 (6)–2.264 (1) ii<br />

3-OC6H5<br />

2.231 (3)–2.365 (2) ii<br />

4-OC6H5<br />

2.318 (3)–2.405 (2)<br />

3-OC6H5 2.282 (3)–2.315 (4) ii<br />

6 -OC6H5 2.272 (7), 2.343 (7) iii<br />

2-OC6H5 2.272 (3), 2.340 (4) iii<br />

3- 6 -OC6H4Me-4 2.231 (4)–2.346 (4) iv<br />

3-OC6H4Me-4 2.281 (4)–2.332 (4) iv<br />

3-OC6H5 2.294 (8), 2.298 (7) v<br />

3-OC6H2⊲CH2NMe2⊳2-2,6-Me-4 2.325 (4)–2.417 (2) vi<br />

3-OC6H4⊲CH2NMe2⊳2-2<br />

2.234 (5)–2.344 (5) vii<br />

4-OC6H4⊲CH2NMe2⊳2-2<br />

2.325 (5)–2.478 (5)<br />

2-OC6H2⊲CH2NMe2⊳2-2,6-Me-4 2.216 (3)–2.289 (3) vii<br />

3-OC6H4CHDN-2]2(C6H4) 2.25 (1)–2.39 (1) viii<br />

2-OC6H2⊲CF3⊳3-2,4,6 2.306 (6), 2.313 (6) ix<br />

2-OC6H5 2.213 (2)–2.323 (2) x<br />

(continued overleaf )

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