2 Homometallic Alkoxides

585
[f(TMEDA)Na⊲ 2-OAr⊳2g2Cr]
4-coord. Cr
2-OC6H3Me2-2,6 Na–O–Cr
2.250 (5), 1.998 (4)
2.247 (5), 2.000 (4)
2.255 (5), 1.988 (4)
2.264 (5), 1.997 (4)
v
[(py) 4Na4Cr2⊲ 3-OAr⊳8]
octahedron with axial Cr
3-OC6H5 Na–O–Cr
2.360 (4)–2.625 (3)
1.974 (3)–1.987 (3)
v
[(THF) 4Na4Cr2⊲ 3-OAr⊳8]
octahedral cluster, apical Cr, four equatorial Na
3-OC6H5 Na–O–Cr
2.348 (2)–2.532 (2)
1.985 (2)–2.000 (2)
vi
[(TMEDA) 4Na4⊲ 3-OAr⊳10Cr4⊲ 3-O⊳3] 3-OC6H5
Mixed ligand aryloxides
2.366 (av.) vii
[(acac) 2Cr⊲ 2-OAr⊳2Cr(acac) 2]
6-coord. Cr
2-OC6H4Me-4 1.974 (2), 1.992 (2) viii
[(acac) 2Cr⊲ 2-OAr⊳2Cr(acac) 2]
6-coord. Cr
2-OC6H5 1.977 (5), 1.980 (4) viii
Li6[BrCr⊲ 2-O,C-OC6H4⊳4CrBr] Cr
2-O,C-OC6H4 2.098 (8) 110 ix
4C
2 core 2.079 (7) 110
i J.J.H. Edema, S. Gambarotta, F. van Bolhuis, W.J.J. Smeets, and A.L. Spek, Inorg. Chem., 28, 1407 (1989).
ii D. Meyer, J.A. Osborn, and M. Wesolek, Polyhedron, 9, 1311 (1990).
iii D.A. Bardwell, D. Black, J.C. Jeffery, E. Schatz, and M.D. Ward, J. Chem. Soc. Dalton Trans., 2321 (1993).
iv J.J.H. Edema, A. Meetsma, S. Gambarotta, S.I. Khan, W.J.J. Smeets, and A.L. Spek, Inorg. Chem., 30, 3639 (1991).
v J.J.H. Edema, S. Gambarotta, F. van Bolhuis, and A.L. Spek, J. Am. Chem. Soc., 111, 2142 (1989).
vi J.J.H. Edema, S. Gambarotta, F. van Bolhuis, W.J.J. Smeets, and A.L. Spek, Inorg. Chem., 28, 1407 (1989).
vii J.J.H. Edema, S. Gambarotta, W.J.J. Smeets, and A.L. Spek, Inorg. Chem., 30, 1380 (1991).
viii M. Nakahanada, T. Fujihara, A. Fuyuhiro, and S. Kaizaki, Inorg. Chem., 31, 1315 (1992).
ix F.A. Cotton and S.A. Koch, Inorg. Chem., 17, 2021 (1978).
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