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2 Homometallic Alkoxides

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596<br />

Table 6.29 (Continued)<br />

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

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

[W(OAr)⊲DNPh)Cl3] 6-coord. W, WDN trans to W-N<br />

OC6H2⊲CH2NMe2⊳2-2,6-Me-4 1.880 (3) 136 xxii<br />

[⊲ArO⊳3W⊲ -N⊳2W(OAr⊳3] OC6H3Pri tbp, axial OAr and N<br />

2-2,6 1.891 (3)<br />

1.888 (3)<br />

155<br />

168<br />

xxiii<br />

Organometallic aryloxides<br />

1.886 (3)<br />

145<br />

[W(OAr) 3⊲C3Et3⊳] OC6H3Pri tbp, planar tungstacyclobutadiene<br />

2-2,6 1.885 (6)<br />

2.008 (6)<br />

152<br />

131<br />

xxiv<br />

1.979 (6)<br />

135<br />

[W(OAr) 2⊲C4Et4⊳] OC6H3Ph2-2,6 1.854 (6) 154 xxv<br />

folded tungstacyclopentatriene 1.927 (5) 136 xxvi<br />

[W(OAr) 2⊲ 2 -C2Et2⊳2] OC6H3Ph2-2,6 1.959 (3) 131 xxv<br />

parallel alkyne units 1.960 (3) 136<br />

[W(OAr) 2Cl2⊲ 2 -C2Et2⊳] OC6H3Ph2-2,6 1.838 (4) 156 xxvi<br />

square planar, axial 2 -C2Et2 1.853 (4) 151<br />

[Cp Ł W(OAr)⊲ 2 -C2Me2⊳2] OC6H5 2.072 (7) 137 xxvii<br />

[Cp Ł W(OAr)Me 2]2⊲ 2-N2⊳ OC6F5 2.079 (8) 142 xxviii<br />

[W(O)(OAr) 2⊲DCHBu t ⊳⊲PMePh2⊳] OC6H3Ph2-2,6 1.993 (5) 129 xxix<br />

tbp, axial OAr and P 1.957 (6) 157<br />

[W(O- 1 -C6H4⊳⊲H⊳2⊲PMe3⊳4] O- 1 -C6H4 2.177 (5) 94 xxx<br />

xxxi<br />

[W(OC6H2Me2-CH2⊳⊲H⊳2⊲PMe3⊳4] [W(OC6H3Ph- OC6H2Me2-2-CH2 2.145 (8) 118 xxx<br />

1-C6H4⊳2⊲C4Et4⊳] OC6H3Ph- 1-C6H4 1.861 (9)<br />

1.932 (9)<br />

124<br />

137<br />

xxvi<br />

[W(OC6H3Ph- 1-C6H4⊳2⊲C6Et6⊳] OC6H3Ph- 1-C6H4 1.941 (2)<br />

1.931 (2)<br />

149<br />

125<br />

xxvi

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