Chiral oxazoline ligands. Synthesis and characterization of palladium, nickel and manganese complexes containing bidentate N,O and N,P moieties †

Gómez-Simón, Montserrat; Jansat, Susanna; Muller, Guillermo; Panyella, David; Font-Bardı́a, Mercè; Soláns, Xavier

doi:10.1039/a703951d

Cited by 38 publications

(24 citation statements)

References 45 publications

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“…Preparation and 1 H NMR data of complex 4b have been reported; it was synthesized from the corresponding phenol [59], and the NMR data are consistent with those obtained for compound 4b isolated in our study.…”

Section: Resultssupporting

confidence: 88%

“…1. The spectra of 2b contained only signals of the 2-phenyl-2-oxazoline-derived moiety and were different from those of related compounds with the same ligand such as the starting CPC 1b, the corresponding free oxazoline (HL), the coordination complex (HL) 2 PdCl 2 [61] and the previously reported mononuclear complex 4b [59]. Moreover, signal patterns in the spectra of 2a and 2b were different.…”

Section: Resultsmentioning

confidence: 95%

“…Furthermore, complex 4a was found to crystallize readily into X-ray quality crystals, and X-ray diffraction analysis was performed (vide infra), unambiguously confirming the proposed structure. It should be mentioned that (oxazolinylj 2 N,O) 2 Pd(II) complexes of type 4 have been reported [58][59][60] and some of them are active catalysts in allylic acetoxylation of alkenes [58].…”

Section: Resultsmentioning

confidence: 99%

“…Selected bond lengths and angles are shown in Table 5. The data obtained for complex 4a are compared to those reported previously for complexes 4b [59] and nonsubstituted (oxazolinyl-j 2 -N,O) 2 Pd complex 4c [60,66].…”

Section: X-ray Structural Analysis Of Complex 4amentioning

confidence: 97%

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Reactions of m-chloroperoxybenzoic acid with dimeric cyclopalladated complexes derived from 2-phenyl-2-oxazolines

Kukowski

Keuseman

Smoliakova

2015

Transition Met Chem

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Section: Resultssupporting

confidence: 88%

Section: Resultsmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 99%

Section: X-ray Structural Analysis Of Complex 4amentioning

confidence: 97%

See 2 more Smart Citations

Reactions of m-chloroperoxybenzoic acid with dimeric cyclopalladated complexes derived from 2-phenyl-2-oxazolines

Kukowski

Keuseman

Smoliakova

2015

Transition Met Chem

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“…Extensive studies on a variety of Mn-containing systems incorporating Phoxs have also been carried out (Gómez-Simón et al 1997, Bagherzadeh 2003, Godbole et al 2005, Bagherzadeh et al 2006, Zhang et al 2007. Structural studies have revealed that stable Mn 3+ complexes, with distorted octahedral binding around the (Bagherzadeh et al 2006), and polymeric Mn species of formula [Mn(κ 2 -N,O-Phox)(μ-X)] n (X = N 3 , C 2 N 3 ).…”

Section: Synthetic Phoxh Compounds As Ligands In Coordination Chemistrymentioning

confidence: 97%

Coordination chemistry and applications of metal phenolates containing an oxazoline group

Taghvaee

Gossage

2013

Reviews in Inorganic Chemistry

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2-(4′,4′-Dimethyl-3′,4′-dihydrooxazol-2′-yl)phenol: Some First-Row Transition Metal Complexes of This Naturally Occurring Binding Group

Mugesh

Singh

Butcher

2001

Eur. J. Inorg. Chem.

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The synthesis and characterization of monomeric MnIII, CoII, NiII, CuII, and ZnII phenolates derived from a biologically relevant ligand, 2‐(4′,4′‐dimethyl‐3′,4′‐dihydrooxazol‐2′‐yl)phenol (1), are described. The addition of Mn(OAc)2 · 4 H2O to an ethanolic solution of 1 affords an unexpected 1:3 complex [Mn(OR){O(Ox)}2] (2) [R = C6H4CONHC(Me2)CH2OH, Ox = 2‐(4,4‐dimethyl‐2‐oxazolinyl)phenyl] in which one of the five‐membered oxazoline rings is partially hydrolyzed. The complexes [M{O(Ox)}2] [M = Co (3), Ni (4), Cu (6), or Zn (7)] were prepared in good yield by the reactions of 1 with the corresponding metal acetates. Novel formation of the six‐coordinate NiII complex 5 with neutral acetic acid was observed during the crystallization process. The complexes were characterized by elemental analysis, magnetic susceptibility, as well as EPR, 1H NMR, electronic, and mass spectral techniques. Complexes 2, 3, 5, 6, and 7 were characterized by single crystal X‐ray diffraction studies. Complex 2 is six‐coordinate whereas complexes 3, 6, and 7 are four‐coordinate with two oxazoline bidentate ligands. The geometry around the metal center is found to be distorted tetrahedral for all of the four‐coordinate complexes. Complex 5 is octahedral with four coordination sites occupied by the two bidentate oxazoline ligands and the other two are occupied by two neutral acetic acid molecules. The hydroxy groups of the coordinated acetic acid are hydrogen‐bonded to the phenolate oxygen atoms of the oxazoline ligands. The variable‐temperature 1H NMR spectroscopic studies of complex 7 indicate that the interconversion between the (M) and (P) helix is slow at low temperatures.

show abstract

Chiral oxazoline ligands. Synthesis and characterization of palladium, nickel and manganese complexes containing bidentate N,O and N,P moieties †

Cited by 38 publications

References 45 publications

Reactions of m-chloroperoxybenzoic acid with dimeric cyclopalladated complexes derived from 2-phenyl-2-oxazolines

Reactions of m-chloroperoxybenzoic acid with dimeric cyclopalladated complexes derived from 2-phenyl-2-oxazolines

Coordination chemistry and applications of metal phenolates containing an oxazoline group

2-(4′,4′-Dimethyl-3′,4′-dihydrooxazol-2′-yl)phenol: Some First-Row Transition Metal Complexes of This Naturally Occurring Binding Group

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