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This article discusses electronically unsaturated three-coordinate chloride and methyl complexes of iron, cobalt, and nickel.
Physical Description
9 p.
Notes
Reprinted with permission from the Journal of the American Chemical Society. Copyright 2002 American Chemical Society.
Abstract: Three-coordinate organometallic complexes are rare, especially with the prototypical methyl ligand. Using a hindered, rigid bidentate ligand (L), it is possible to create 12-electron methyliron (II) and 13-electron methylcobalt (II) complexes. These complexes are thermally stable, and ¹H NMR spectra suggest that the low coordination number is maintained in solution. Attempts to create the 14-electron LNiCH₃ led instead to the three-coordinate nickel(I) complex LNi(THF). Single crystals of LMCH₃ are isomorphous with the new three-coordinate chloride complexes LNiCl and LCoCl. Along with the recently reported LFeCl (Smith, J.M.; Lachicotte, R.J.; Holland, P.L. Chem Commun. 2001, 1542), these are the only examples of three-coordinate iron(II), cobalt(II), and nickel(II) complexes with terminal chloride ligands, enabling the systematic evaluation of the effect of coordination number and metal identity on M-Cl bond lenghts. Electronic structure calculations predict the ground states of the trigonal complexes.
Publication Title:
Journal of the American Chemical Society
Volume:
124
Issue:
48
Page Start:
14416
Page End:
14424
Peer Reviewed:
Yes
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Holland, Patrick L.; Cundari, Thomas R., 1964-; Perez, Lanyn L.; Eckert, Nathan A. & Lachicotte, Rene J.Electronically Unsaturated Three-Coordinate Chloride and Methyl Complexes of Iron, Cobalt, and Nickel,
article,
November 8, 2002;
[Washington, D.C.].
(https://digital.library.unt.edu/ark:/67531/metadc107783/:
accessed April 25, 2024),
University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu;
crediting UNT College of Arts and Sciences.