2019
DOI: 10.1021/acs.inorgchem.9b02804
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(Benz-)imidazolin-2-ylidene-benzimidazolatonickel(II) Chelates: Syntheses, Structures, and Tuning of Noninnocent Chelate Ligand Behavior

Abstract: The deprotonation of 1-(1H-benzimidazol-2-yl)-3-methylbenzimidazolium hexafluorophosphate (2 MeH2[PF6]) and 1-(1H-benzimidazol-2-yl)-3-isopropylbenzimidazolium hexafluorophosphate (2 iPrH2[PF6]) with potassium tert-butoxide in THF afforded the benzimidazolium-benzimidazolates 2 MeH and 2 iPrH. The “instant carbene” behavior of these conjugated mesomeric betaines was demonstrated by trapping their carbenic tautomers 2′ MeH and 2′ iPrH with elemental sulfur and selenium, which afforded the corresponding thio- an… Show more

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Cited by 9 publications
(1 citation statement)
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“…[10][11][12] Cyclopentadienylnickel(I) (CpNi I ) coordinated by a σ-donor ligand have been reported but will generally form unreactive clusters. [13][14][15][16][17][18][19] �-Diimine ligands have been shown to support both CpNi I/III redox states, however, the ligand's noninnocence makes it difficult to assign location of the redox process. [20] Herein we report CpNi II coordinated by dRpf = 1,1'-bis(di-Rphosphino)ferrocene, R = phenyl (dppf), iso-propyl (dippf), and cyclohexyl (dcpf)).…”
Section: Introductionmentioning
confidence: 99%
“…[10][11][12] Cyclopentadienylnickel(I) (CpNi I ) coordinated by a σ-donor ligand have been reported but will generally form unreactive clusters. [13][14][15][16][17][18][19] �-Diimine ligands have been shown to support both CpNi I/III redox states, however, the ligand's noninnocence makes it difficult to assign location of the redox process. [20] Herein we report CpNi II coordinated by dRpf = 1,1'-bis(di-Rphosphino)ferrocene, R = phenyl (dppf), iso-propyl (dippf), and cyclohexyl (dcpf)).…”
Section: Introductionmentioning
confidence: 99%