2 Homometallic Alkoxides

394
Table 5.2 Chemical shifts from 17 ONMR
Compound ⊲MDO⊳ 1 ⊲ 2-O) ⊲ 3-O) ⊲ 4-O) ( 5-O) Reference
[Mo⊲O⊳⊲OPr i ⊳4] 894 – – – – 34
[Mo⊲O⊳⊲OBu t ⊳4] 970 – – – – 34
[Mo⊲O⊳2⊲OBu t ⊳2] 862 – – – – 34
[Mo⊲O⊳2⊲OBu t ⊳2⊲py⊳2] 885 – – – – 34
[Mo⊲O⊳2⊲OPr i ⊳2⊲py⊳2] 878 – – – – 34
[Mo⊲O⊳2⊲OCH2Bu t ⊳2⊲py⊳2] 872 – – – – 34
[Ti3⊲ 3-O⊳⊲OMe⊳⊲OPr i ⊳9] – – 554 – – 10
[Ti7⊲ 4-O⊳2⊲ 3-O⊳2⊲OEt⊳20] – – 537 364 – 9
[Ti8⊲ 3-O⊳4⊲ -O⊳2⊲OCH2Ph⊳20] – 726 533 – – 9
[Ti10⊲ 4-O⊳4⊲ 3-O⊳2⊲ -O⊳2⊲OEt⊳24] – 782 525 367, 360 – 9
[Ti18⊲ 4-O⊳4⊲ 3-O⊳20⊲ -O⊳4⊲H⊳⊲OBu t ⊳17] – 760, 699 580, 560, 530 440, 439, 407 – 12
[Al4⊲ 4-O⊳⊲OBu i ⊳10⊲Bu i OH⊳] – – – 82.1 – 79
[Al4⊲ 4-O⊳⊲OBu i ⊳5⊲OCH2CF3⊳5⊲Bu i OH⊳] – – – 80.6 – 79
[Al4⊲ 4-O⊳⊲OCH2CF3⊳10⊲CF3CH2OH⊳] – – – 85.9 – 79
[Al5⊲ 5-O⊳⊲OBu i ⊳13] – – – – 91.7 79
[Al5⊲ 5-O⊳⊲OBu i ⊳12⊲OBu n ⊳] – – – – 93.6 79
⊲Bu4N⊳3[Nb2W4O18⊲OMe⊳] 813 (Nb) 458, 449 (Nb, W) – – – 80
732 (W) 393, 381 (W2)
721 (W)
⊲Bu4N⊳3[Nb2W4O18⊲OBu t ⊳] 784 (Nb) 527 (Nb2) – – – 80
715 (W) 450, 448, 444 (Nb, W)
385, 382 (W2)