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2 Homometallic Alkoxides

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592<br />

Table 6.29 Tungsten aryloxides<br />

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

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

Homoleptic aryloxides and adducts<br />

[W(OAr) 6]<br />

octahedral W<br />

OC6H4Me-4 1.887 (3)<br />

1.896 (3)<br />

147<br />

145<br />

i<br />

1.889 (3)<br />

137<br />

1.913 (3)<br />

138<br />

1.891 (3)<br />

146<br />

1.894 (4)<br />

140<br />

[NEt4][W(OAr) 6]<br />

octahedral W anion<br />

OC6H51.955 (4)<br />

1.931 (5)<br />

137<br />

142<br />

ii<br />

1.893 (5)<br />

151<br />

1.956 (5)<br />

136<br />

1.941 (4)<br />

139<br />

1.920 (4)<br />

138<br />

[⊲THF⊳2Li⊲ 2-OAr⊳2W(OAr) 4]<br />

octahedral W<br />

OC6H51.915 (6)<br />

1.921 (7)<br />

139<br />

138<br />

ii<br />

1.928 (6)<br />

138<br />

1.906 (6)<br />

144<br />

2-OC6H5<br />

1.92 (2), 2.011 (7)<br />

1.98 (2), 2.012 (7)<br />

[W(OAr) 4] OC6H3Pri distorted square planar geometry<br />

2-2,6 1.851 (6)<br />

1.866 (5)<br />

154<br />

155<br />

iii, iv<br />

1.851 (5)<br />

155<br />

1.849 (5)<br />

159<br />

[W(OAr) 4]<br />

distorted square planar geometry<br />

OC6H3Me2-2,6 1.843 (4) 161 iv<br />

trans-[W(OAr) 4⊲H2NBut⊳2] OC6H4Ph-2 1.972 (3)<br />

1.963 (3)<br />

139<br />

140<br />

v

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