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2 Homometallic Alkoxides

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327<br />

Table 4.15 <strong>Alkoxides</strong> of copper, silver, and gold<br />

M–O Bond lengths ( ˚A)<br />

Metal<br />

Bond angles ( Ž )<br />

Compound coordination Terminal Bridging MOC � Reference<br />

[Cu4⊲ -OBu t ⊳4] 2 – 1.813–1.882 (10)<br />

av. 1.852<br />

119.8–127.3 420<br />

[Cu2⊲ -OBu t ⊳2⊲PPh3⊳2] 3 – 1.960, 1.996 (4) 126.9, 132.1 421<br />

[Cu4⊲ -OSiPh3⊳4] 2 – 1.833–1.856 (4)<br />

av. 1.844<br />

117.8–134.7 422<br />

[Cu2⊲ -OSiPh3⊳2⊲PMe2Ph⊳2]<br />

[Cu4f -OSiPh⊲OBu<br />

3 – 1.946, 2.046 (2) 123.2, 133.5 422<br />

t ⊳2g4] 2 – 1.827–1.844 (5)<br />

av. 1.835<br />

131.9, 132.1 423<br />

[Cu2f -O⊲CH2⊳4NDC(Me)CH2C⊲CF3⊳2Og2] 4 – 1.892–1.924 (2)<br />

av. 1.905<br />

121.2, 127.2 424<br />

[Cu2f -O⊲CH2⊳3NDC(Me)CH2C⊲CF3⊳2Og2] 4 – 1.876–1.926 (2)<br />

av. 1.899<br />

122.5, 128.7 424<br />

[Cu2f -OC⊲CF3⊳2CH2C(Me)DN<br />

4 1.857–1.876 (7)<br />

– 123.9–126.2 425<br />

⊲CH2⊳5NDC(Me)CH 2C⊲CF3⊳2Og2]<br />

av. 1.864<br />

[CufOC⊲CF3⊳2CH2CHNHRg2] 4 1.906, 1.934 (8) – 118.8, 120.2 426<br />

R D menthyl<br />

[CufOC⊲CF3⊳2⊲OH⊳g4] 2 4 av. 1.933 (6) – – 427<br />

[CufO2C⊲CF3⊳2gL] 5 1.977, 1.999 (4) – 90.9, 91.4 406<br />

L D cyclo-N DC(Me)CH 2C⊲Me⊳2NH⊲C3H6⊳NH⊲C3H6⊳<br />

[CufOC⊲CF3⊳2OC⊲CF3⊳2Og⊲Me2NC2H4NMe2⊳] 4 1.890–1.895 (4) – 120.8–121.7 428<br />

av. 1.893<br />

(continued overleaf )

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