Artikel,

Two new amidato-bridged dimolybdenum(II) compounds: Tetrakis[N-(2,6-dimethylphenyl)formamido]dimolybdenum bis(tetrahydrofuranate) and tetrakis(N-phenylpivalamido)dimolybdenum

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Inorganic Chemistry, 19 (12): 3586--3589 (1980)
DOI: 10.1021/ic50214a006

Zusammenfassung

Two new amidato-bridged dimolybdenum compds., Mo2[(2,6-Me2C6H3)NCHO]4(ax-THF)2 (I) and Mo2[PhNCOCMe3]4 (II), were prepd. and their structures detd. The structure of I was solved in the monoclinic space group C2/c with a 11.892(2), b 25.274(3), c 14.668(1) \AA, b 96.16(2)°, V = 4383(2) \AA,3 and Z = 4. Each mol. resides on a crystallog. C2 axis that is colinear with the Mo-Mo bond. The two THF mols are axially coordinated. The Mo-O(THF) distance, 2.577(5) \AA, is the shortest that has been obsd. to date, and this may be related to the relatively long Mo-Mo distance, 2.113(1) \AA. The structure of II was solved in the triclinic space group P1̅ with a 11.254(3), b 11.751(2), c 9.531(4) \AA, a 103.36(2)°, b 113.00(3)°, g 70.35(4)°, V = 1085(1) \AA3, and Z = 1. Each mol. resides on a center of inversion. Thus, the ligand arrangements in the two mols. are different, with the core arrangements being trans for I and cis for II. The Mo-Mo bond length in this compd., 2.070(1) \AA, is markedly shorter than that in I, while the other bond lengths within the cores of the two mols. are essentially the same. [on SciFinder(R)]

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