A mol­ecular substitutional disorder case study suitable for instruction: L2CrII(THF)/L2[(tri­methyl­sil­yl)meth­yl]CrIII (L is 2,5-bis­{[(2,6-di­iso­propyl­phen­yl)imino]­meth­yl}pyrrol-1-ide)

Salisbury, Brian A.
Young, John F.
Theopold, Klaus H.
Yap, Glenn P. A.
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Acta Crystallographica Section C: Structural Chemistry
A solution of CrII and CrIII com­plexes, bis(2,5-bis{[(2,6-diisopropylphenyl)imino]methyl}pyrrol-1-ido)(tetrahydrofuran)chromium(II)–bis(2,5-bis{[(2,6-diisopropylphenyl)imino]methyl}pyrrol-1-ido)[(trimethylsilyl)methyl]chromium(III) (0.88/0.12), [Cr(C30H38N3)2(C4H8O)]0.88[Cr(C30H38N3)2(C4H11Si)]0.12 or L2CrII(THF)/L2[(tri­methyl­sil­yl)meth­yl]CrIII (L = 2,5-bis­{[(2,6-di­iso­propyl­phen­yl)imino]­meth­yl}pyrrol-1-ide and THF is tetra­hydro­furan), in pentane crystallizes in the monoclinic space group P21/c. The structure obtained shows most of the atoms coincident but with THF disordered with the (tri­methyl­sil­yl)methyl ligand. Structures with this disorder, involving more than two or three atoms, seem to appear rarely in the literature; however, in this case, the data set is ideal for the crystallographic instruction of mol­ecular substitution disorder.
This article was originally published in Acta Crystallographica Section C: Structural Chemistry. The version of record is available at: https://doi.org/10.1107/S2053229622003825
chromium com­plex , crystal structure , crystallographic case study , substitutional disorder
Salisbury, Brian A., John F. Young, Klaus H. Theopold, and Glenn P. A. Yap. “A Mol­ecular Substitutional Disorder Case Study Suitable for Instruction: L2CrII(THF)/L2[(Tri­methyl­sil­yl)Meth­yl]CrIII (L Is 2,5-Bis­{[(2,6-Di­iso­propyl­phen­yl)Imino]­meth­yl}pyrrol-1-Ide).” Acta Crystallographica Section C Structural Chemistry 78, no. 5 (May 1, 2022): 295–98. https://doi.org/10.1107/S2053229622003825.