26.12.2012 Views

2 Homometallic Alkoxides

2 Homometallic Alkoxides

2 Homometallic Alkoxides

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

360<br />

Table 4.20 (Continued)<br />

Coordination no.<br />

Ti, Zr, Hetero-<br />

M–O Bond lengths ( ˚A)<br />

Bond angles ( Ž Compound Hf metal Terminal Bridging<br />

)<br />

MOC � Reference<br />

[Pb4Zr2⊲OPr i ⊳16] 6 3 and 4 ZrO, 1.855–1.995(18)<br />

av. 1.927<br />

[TIf⊲ -OCH⊲CF3⊳2g3Zrf -<br />

OCH⊲CF3⊳2g3TI]<br />

ZrO, 2.135–2.271 (21)<br />

av. 2.221<br />

PbO, 2.232–2.431 (20)<br />

av. 2.318<br />

6 3 1 – ZrO, 2.035–2.090 (7)<br />

av. 2.060<br />

TIO, 2.740–2.831 (11)<br />

[ICdfHf2⊲OPr i ⊳9g] 6 5 HfO, 1.915–1.923 (8)<br />

av. 1.919<br />

[ClCufHf2⊲OPr i ⊳9g] 6 5 HfO, 1.921–1.932 (10)<br />

av. 1.927<br />

[⊲Pr i O⊳2Hf⊲ -OPr i ⊳4fAl⊲OPr i ⊳2g2] 6 4 HfO, 1.913 (4)<br />

AlO, 1.667, 1.689 (6)<br />

b D bridging, t D terminal; ax D axial, eq D equatorial.<br />

1 Coordination doubtful.<br />

av. 2.795<br />

HfO, 2.255–2.277 (6) ( 3)<br />

av. 2.263<br />

2.030–2.173 (6) ( )<br />

av. 2.103<br />

CdO, 2.315, 2.329 (6) ( 3)<br />

2.306, 2.361 (7) ( )<br />

HfO, 2.210–2.233 (8) ( 3)<br />

av. 2.219<br />

2.074–181 (8) ( )<br />

av. 2.120<br />

CuO, 2.183, 2.187 (9) ( 3)<br />

2.001, 2.008 (10) ( )<br />

HfO, 2.140, 2.213 (4)<br />

AlO, 1.787, 1.803 (5)<br />

HfO, 177.4 (t)<br />

AlO, 138.5, 160.9 (t)<br />

HfO, 126.3 127.9 (b)<br />

AlO, 128.7, 129.8 (b)<br />

– 514<br />

– 515<br />

– 495<br />

– 200<br />

516

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!