| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1336003 | Polyhedron | 2011 | 4 Pages |
A sulfur-scorpionate ligand, hydrotris(1-methylimidazol-2-ylthio)borate, was reacted with CoF3 to afford cobalt complexes, [CoIII(HBmit3)2](HBmit3) (1) and [CoII(HBmit3)2]·4H2O (2) (HBmit3- = hydrotris(1-methylimidazol-2-ylthio)borate). X-ray structural analysis indicated that complexes 1 and 2 have hexacoordinate octahedral and tetracoordinate tetrahedral structures, respectively. Complex 1 is a low-spin cobalt(III) species and complex 2 is a high-spin cobalt(II) (S = 3/2).
Graphical abstractCobalt complexes with tripodal sulfur-ligands, [CoIII(HBmit3)2](HBmit3) and [CoII(HBmit3)2]·4H2O (HBmit3- = hydrotris(1-methylimidazol-2-ylthio)borate) were synthesized. They have hexacoordinate octahedral and tetracoordinate tetrahedral structures, respectively. The cobalt(III) and the cobalt(II) complexes are low-spin and high-spin states (S = 3/2), respectively.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► The sulfur-scorpionate [HBmit3]− was used to yield mononuclear complexes [CoIII(HBmit3)2]+ and [CoII(HBmit3)2]. ► [CoIII(HBmit3)2]+ crystalizes with [HBmit3]− anion in the P21/a space group, providing hexacoordinate centers. ► [CoII(HBmit3)2] crystalizes with crystal water in the P21/n space group, providing tetracoordinate centers. ► [CoIII(HBmit3)2]+ is diamagnetic and [CoII(HBmit3)2] shows spin-only paramagnetism in 2.0–350 K.
