The title compds., Cr2PhNC(O)CH34 (I) and Mo2PhNC(O)CH34 (II), tetraamidodimetal compds. with quadruple M-M bonds, are described. They are prepd. by reaction of the M2(O2CCH3)4 compds. with LiPhNC(O)CH3. I is tetragonal, space group I4̅, with a 12.739(6)° and c 9.251(3) \AA; Z = 2. Each mol. has (̅S4) crystallog. symmetry and the Cr-Cr distance is 1.873(4) \AA. The ditetrahydrofuranate of II is monoclinic, space group P21/c, with a 9.849(2), b 11.622(2), c 17.957(2) \AA, and b 95.32(1)°; Z = 2. Each mol. resides on a crystallog. inversion center and has a Mo-Mo distance of 2.086(2) \AA. The ligand arrangement is different from that in I; the MoN2O2 groups have a cis configuration and the overall symmetry of the Mo2(NCO)4 grouping is C2h. This is the 1st time homologous Cr24+ and Mo24+ complexes differ structurally in a qual. way. on SciFinder(R)
%0 Journal Article
%1 Bino.1979c
%A Bino, Avi
%A Cotton, F. Albert
%A Kaim, Wolfgang.
%D 1979
%J Inorganic Chemistry
%K acetanilido chromium mol molybdenum structure
%N 11
%P 3030--3034
%R 10.1021/ic50201a017
%T Tetraacetanilidodichromium and -dimolybdenum: Another supershort chromium-chromium bond and an unexpected structural difference
%V 18
%X The title compds., Cr2PhNC(O)CH34 (I) and Mo2PhNC(O)CH34 (II), tetraamidodimetal compds. with quadruple M-M bonds, are described. They are prepd. by reaction of the M2(O2CCH3)4 compds. with LiPhNC(O)CH3. I is tetragonal, space group I4̅, with a 12.739(6)° and c 9.251(3) \AA; Z = 2. Each mol. has (̅S4) crystallog. symmetry and the Cr-Cr distance is 1.873(4) \AA. The ditetrahydrofuranate of II is monoclinic, space group P21/c, with a 9.849(2), b 11.622(2), c 17.957(2) \AA, and b 95.32(1)°; Z = 2. Each mol. resides on a crystallog. inversion center and has a Mo-Mo distance of 2.086(2) \AA. The ligand arrangement is different from that in I; the MoN2O2 groups have a cis configuration and the overall symmetry of the Mo2(NCO)4 grouping is C2h. This is the 1st time homologous Cr24+ and Mo24+ complexes differ structurally in a qual. way. on SciFinder(R)
@article{Bino.1979c,
abstract = {The title compds., Cr2[PhNC(O)CH3]4 (I) and Mo2[PhNC(O)CH3]4 (II), tetraamidodimetal compds. with quadruple M-M bonds, are described. They are prepd. by reaction of the M2(O2CCH3)4 compds. with Li[PhNC(O)CH3]. I is tetragonal, space group I4̅, with a 12.739(6)° and c 9.251(3) {\AA}; Z = 2. Each mol. has (̅S4) crystallog. symmetry and the Cr-Cr distance is 1.873(4) {\AA}. The ditetrahydrofuranate of II is monoclinic, space group P21/c, with a 9.849(2), b 11.622(2), c 17.957(2) {\AA}, and \textgreek{b} 95.32(1)°; Z = 2. Each mol. resides on a crystallog. inversion center and has a Mo-Mo distance of 2.086(2) {\AA}. The ligand arrangement is different from that in I; the MoN2O2 groups have a cis configuration and the overall symmetry of the Mo2(NCO)4 grouping is C2h. This is the 1st time homologous Cr24+ and Mo24+ complexes differ structurally in a qual. way. [on SciFinder(R)]},
added-at = {2019-07-15T13:41:23.000+0200},
author = {Bino, Avi and Cotton, F. Albert and Kaim, Wolfgang.},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/281f80709f0c469f9d4525876903a4f22/b_schwederski},
doi = {10.1021/ic50201a017},
interhash = {dfa0f84a69a0048f6e077374925e8d8e},
intrahash = {81f80709f0c469f9d4525876903a4f22},
issn = {0020-1669},
journal = {Inorganic Chemistry},
keywords = {acetanilido chromium mol molybdenum structure},
number = 11,
pages = {3030--3034},
timestamp = {2019-07-15T11:42:10.000+0200},
title = {Tetraacetanilidodichromium and -dimolybdenum: Another supershort chromium-chromium bond and an unexpected structural difference},
volume = 18,
year = 1979
}
