X-Ray Crystal Structures of Alkoxo Metal Compounds - Alkoxo and Aryloxo Derivatives of Metals - page 342

Coordination no.
Alkali Other

M-O Bond lengths ( A)

metal metal Bond angles ( Ž )

MOC

(M 0 ) Compound (M) Terminal Bridging Reference

[Na 2 3 -OBu t 2 -OBu t 4 Zn 2 ]

3 4 - NaO, 2.427 (5) 3

2.226 (3)
ZnO, 2.050 (2) 3
1.892 (4)

ZnO, 126.9 ( 3 ,b)
130.8, 136.1 ( ,b)

479

[Na 2 3 -OBu t 2 -OBu t 4 Sn] 4 3 - NaO, 2.271 - 2.414

SnO, 2.095 - 2.111

NaO, 126.7 - 130.3
SnO, 118.8 - 123.1

468

[K 3 -OBu t 2 -OBu t 3 U 2 OBu t 4 ] 4 6 UO, 2.10 - 2.14 (2)

av. 2.122

KO, 2.93, 2.94 (2) 3
2.74, 2.76 (2) ( 2 )
UO, 2.43 ( 3 ,av.)
2.26 ( ,av.)

UO, 168 - 175 (t)
UO, 126 - 128 ( 3 ,b)
127 - 153 ( ,b)

151

[K 3 -OPr i -OPr i 3 Ti OPr i ]

5 5 1.814 (1) KO, 2.784 (1) 3

2.820 ( ,av.)
TiO, 1.979 (1) 3
1.876 ( ,av.)

- 473

[(py) 2 K 2 -OCH 2 Bu t 8 Mo 2 ] 5 1

5 - KO, av. 2.745

MoO, av. 1.997

- 259

[(py) 2 K 2 -OCH 2 Bu t 8 W 2 ] 5 1

5 - KO, av. 2.770

WO, av. 1.998

- 259

[K 2 3 -OBu t 2 -OBu t 4 Zn 2 ]

3 4 - KO, 2.771 (5) 3

2.556 (4)
ZnO, 2.038 (3) 3
1.899 (5)

ZnO, 127.0 ( 3 ,b)
134.4, 1.38.4 ( ,b)

479

[ Pr i OH 2 K -OPr i 4 Al] 1 6 4 Pr i OH K, 2.668,

2.725 (8)

KO, 2.695 - 3.136 (6)
av. 2.898
AlO, 1.713 - 1.776 (6)
av. 1.743

- 480