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2 Homometallic Alkoxides

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314<br />

Table 4.11 (Continued)<br />

M–O Bond lengths ( ˚A)<br />

Metal Bond angles ( Ž )<br />

Compound coordination Terminal Bridging � MOC Reference<br />

[W2⊲ -OPr i ⊳3⊲OPr i ⊳3fC2⊲NMe2⊳g⊲CO⊳2] 6 1.861–1.903 (16)<br />

av. 1.878<br />

[W2⊲ -CO⊳2⊲ -NMe2⊳fOCMe⊲CF3⊳2g4⊲CO⊳⊲NMe2⊳] 6 2.026–2.056 (10)<br />

(W[1])<br />

av. 2.043<br />

1.900–1.931 (10)<br />

(W[2])<br />

av. 1.914<br />

2.006–2.212 (16)<br />

av. 2.138<br />

132.9–146.5 (t)<br />

av. 141.2<br />

122.4–137.3 (b)<br />

av. 128.4<br />

335<br />

– – 304<br />

[W2⊲ -CPh⊳2⊲OBut⊳4] 4 1.831–1.855 – 147.8, 156.2 336<br />

[W2⊲ -C2Ph2⊳2⊲OBut⊳4] 411.844–1.882 (9)<br />

– 144.2–175.0 336<br />

av. 1.860<br />

av. 159.4<br />

[W2⊲ -OPr i ⊳2⊲ -C2H2⊳⊲OPri⊳4⊲py⊳2] 611.927–1.950 (9) 2.099–2.183 (9) 133.2–134.4 (t) 337, 338<br />

av. 1.941<br />

av. 2.142<br />

av. 134.6<br />

122.9–126.9 (b)<br />

av. 124.9<br />

[W2⊲ -OCH2But⊳⊲ -C2Me4⊳⊲OCH2But⊳5⊲py⊳2] 611.936–1.973 (7) 2.025, 2.123 (7) 134.0–141.6 (t) 337, 338<br />

av. 1.953<br />

av. 136.7<br />

126.3, 130.3 (b)<br />

[W2⊲ -OPr i ⊳⊲ -C4H4⊳⊲OPri⊳5⊲C2H2⊳] 611.901–1.931 (7) 2.004, 2.152 (7) 125.6–137.5 (t) 339<br />

av. 1.914<br />

av. 133.5<br />

132.9, 137.9 (b)<br />

[W2⊲ -OPr i ⊳⊲ -C4Me4⊳⊲OPri⊳5⊲C2Me2⊳] 611.911–1.945 (11) 1.995, 2.112 (11) 131.5–141.0 (t) 337, 339<br />

av. 1.930<br />

av. 134.0<br />

133.1, 138.3 (b)<br />

[W2⊲ -OBu t ⊳⊲ -C2H2⊳⊲OBut⊳6⊲py⊳] 511.914–1.958 (6) 1.999, 2.083 (6) 144.8–152.9 (t) 338<br />

av. 1.930<br />

av. 150.4<br />

138.9, 139.6 (b)<br />

[W2⊲ -CSiMe3⊳2⊲OPri⊳4] 4 1.84–1.87 (1)<br />

– 144.8–149.3 340<br />

av. 1.855<br />

av. 148.0

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