The reaction of Mo2(O2CCH3)4 with the anion of N-(2-pyridyl)acetamide gives Mo2(C5NH4)NC(O)CH34. The ligands coordinates through the 2 N atoms. The Mo-Mo distance is 2.037(3) \AA, the shortest Mo-Mo distance known. The previously shortest occurs in Mo22,6-(MeO)2C6H34, 2.064(1) \AA. The compd. is tetragonal, with a 9.050(1) and c 17.438(3) \AA, Z = 2. The possible space groups were I4, I4̅, and I4/m, of which only the last 2 were consistent with the Patterson function. The structure could not be refined in I4̅ but using a disordered model it behaved satisfactorily in I4/m. Each ligand is treated as having 2 equally populated orientations; the actual symmetry of an individual mol. thus remains unknown, but is probably D2d. on SciFinder(R)
%0 Journal Article
%1 Cotton.1979c
%A Cotton, F. Albert
%A Ilsley, William H.
%A Kaim, Wolfgang.
%D 1979
%J Inorganic Chemistry
%K acetamido bond molybdenum pyridyl pyridylacetamidomolybdenum;molybdenum quadruple;mol short structure
%N 10
%P 2717--2719
%R 10.1021/ic50200a017
%T N-(2-Pyridyl)acetamido-N,N'dimolybdenum; The (new) shortest known molybdenum-molybdenum quadruple bond
%V 18
%X The reaction of Mo2(O2CCH3)4 with the anion of N-(2-pyridyl)acetamide gives Mo2(C5NH4)NC(O)CH34. The ligands coordinates through the 2 N atoms. The Mo-Mo distance is 2.037(3) \AA, the shortest Mo-Mo distance known. The previously shortest occurs in Mo22,6-(MeO)2C6H34, 2.064(1) \AA. The compd. is tetragonal, with a 9.050(1) and c 17.438(3) \AA, Z = 2. The possible space groups were I4, I4̅, and I4/m, of which only the last 2 were consistent with the Patterson function. The structure could not be refined in I4̅ but using a disordered model it behaved satisfactorily in I4/m. Each ligand is treated as having 2 equally populated orientations; the actual symmetry of an individual mol. thus remains unknown, but is probably D2d. on SciFinder(R)
@article{Cotton.1979c,
abstract = {The reaction of Mo2(O2CCH3)4 with the anion of N-(2-pyridyl)acetamide gives Mo2[(C5NH4)NC(O)CH3]4. The ligands coordinates through the 2 N atoms. The Mo-Mo distance is 2.037(3) {\AA}, the shortest Mo-Mo distance known. The previously shortest occurs in Mo2[2,6-(MeO)2C6H3]4, 2.064(1) {\AA}. The compd. is tetragonal, with a 9.050(1) and c 17.438(3) {\AA}, Z = 2. The possible space groups were I4, I4̅, and I4/m, of which only the last 2 were consistent with the Patterson function. The structure could not be refined in I4̅ but using a disordered model it behaved satisfactorily in I4/m. Each ligand is treated as having 2 equally populated orientations; the actual symmetry of an individual mol. thus remains unknown, but is probably D2d. [on SciFinder(R)]},
added-at = {2022-06-15T11:26:56.000+0200},
author = {Cotton, F. Albert and Ilsley, William H. and Kaim, Wolfgang.},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2b03aecb8949c3204a457fe07a33408f5/huebleriac},
doi = {10.1021/ic50200a017},
interhash = {21bc204a0cd8a1b759ac54df55c3debc},
intrahash = {b03aecb8949c3204a457fe07a33408f5},
issn = {0020-1669},
journal = {Inorganic Chemistry},
keywords = {acetamido bond molybdenum pyridyl pyridylacetamidomolybdenum;molybdenum quadruple;mol short structure},
number = 10,
pages = {2717--2719},
timestamp = {2022-06-15T09:26:56.000+0200},
title = {[N-(2-Pyridyl)acetamido-N,N']dimolybdenum; The (new) shortest known molybdenum-molybdenum quadruple bond},
volume = 18,
year = 1979
}