A new mixed-ligand complex of the quadruply bonded ditungsten unit bis(N,N'-diphenylacetamidinato)bis(2,4-dimethyl-6-hydroxypyrimidinato)ditungsten bis(tetrahydrofuranate)
Reaction of W2(dmhp)4 (Hdmhp = 2,4-dimethyl-6-hydroxypyrimidine) with Li[(PhN)2CMe] gave a product in which 2 dmhp ligands are replaced, in transoid fashion, by 2 [(PhN)2CMe] ligands. This red cryst. product, W2(dmhp)2[(PhN)2CMe]2.2THF, is air sensitive but thermally stable. It is only sparingly sol. in several common solvents and insufficiently volatile to give a mass spectrum under the usual conditions. It crystallizes in space group P21/n with a 11.399(3), b 10.431(1), c 20.002(4)\AA, b 101.9(3)°; V 2327.4(1.5)\AA3 and Z = 2, thus requiring the mols. to lie on crystallog. inversion centers. The W-W distance 2.174(1) \AA is very similar to that in W2(dmhp)4. The structure was refined to R1 = 0.039 and R2 = 0.053 by using anisotropic thermal parameters for all atoms except those in the THF mol. [on SciFinder(R)]
%0 Journal Article
%1 Cotton.1979
%A Cotton, F. Albert
%A Illsley, William H.
%A Kaim, Wolfgang.
%D 1979
%J Inorganic Chemistry
%K acetamidinato bridged hydroxy hydroxypyrimidinato pyrimidine tungsten tungsten;structure
%N 12
%P 3569--3571
%R 10.1021/ic50202a055
%T A new mixed-ligand complex of the quadruply bonded ditungsten unit bis(N,N'-diphenylacetamidinato)bis(2,4-dimethyl-6-hydroxypyrimidinato)ditungsten bis(tetrahydrofuranate)
%V 18
%X Reaction of W2(dmhp)4 (Hdmhp = 2,4-dimethyl-6-hydroxypyrimidine) with Li[(PhN)2CMe] gave a product in which 2 dmhp ligands are replaced, in transoid fashion, by 2 [(PhN)2CMe] ligands. This red cryst. product, W2(dmhp)2[(PhN)2CMe]2.2THF, is air sensitive but thermally stable. It is only sparingly sol. in several common solvents and insufficiently volatile to give a mass spectrum under the usual conditions. It crystallizes in space group P21/n with a 11.399(3), b 10.431(1), c 20.002(4)\AA, b 101.9(3)°; V 2327.4(1.5)\AA3 and Z = 2, thus requiring the mols. to lie on crystallog. inversion centers. The W-W distance 2.174(1) \AA is very similar to that in W2(dmhp)4. The structure was refined to R1 = 0.039 and R2 = 0.053 by using anisotropic thermal parameters for all atoms except those in the THF mol. [on SciFinder(R)]
@article{Cotton.1979,
abstract = {Reaction of W2(dmhp)4 (Hdmhp = 2,4-dimethyl-6-hydroxypyrimidine) with Li[(PhN)2CMe] gave a product in which 2 dmhp ligands are replaced, in transoid fashion, by 2 [(PhN)2CMe] ligands. This red cryst. product, W2(dmhp)2[(PhN)2CMe]2.2THF, is air sensitive but thermally stable. It is only sparingly sol. in several common solvents and insufficiently volatile to give a mass spectrum under the usual conditions. It crystallizes in space group P21/n with a 11.399(3), b 10.431(1), c 20.002(4){\AA}, \textgreek{b} 101.9(3)°; V 2327.4(1.5){\AA}3 and Z = 2, thus requiring the mols. to lie on crystallog. inversion centers. The W-W distance 2.174(1) {\AA} is very similar to that in W2(dmhp)4. The structure was refined to R1 = 0.039 and R2 = 0.053 by using anisotropic thermal parameters for all atoms except those in the THF mol. [on SciFinder(R)]},
added-at = {2022-06-15T11:26:56.000+0200},
author = {Cotton, F. Albert and Illsley, William H. and Kaim, Wolfgang.},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2a50c0192842878ced676e8b3b2624b24/huebleriac},
doi = {10.1021/ic50202a055},
interhash = {3594de32c9dcaac10f2674243ec6601f},
intrahash = {a50c0192842878ced676e8b3b2624b24},
issn = {0020-1669},
journal = {Inorganic Chemistry},
keywords = {acetamidinato bridged hydroxy hydroxypyrimidinato pyrimidine tungsten tungsten;structure},
number = 12,
pages = {3569--3571},
timestamp = {2022-06-15T09:26:56.000+0200},
title = {A new mixed-ligand complex of the quadruply bonded ditungsten unit bis(N,N'-diphenylacetamidinato)bis(2,4-dimethyl-6-hydroxypyrimidinato)ditungsten bis(tetrahydrofuranate)},
volume = 18,
year = 1979
}
