N,N,O Pincer Ligand with a Deprotonatable Site That Promotes Redox‐Leveling, High Mn Oxidation States, and a Mn 2 O 2 Dimer Competent for Catalytic Oxygen Evolution
Sign Up to like & getrecommendations! Published in 2019 at "European Journal of Inorganic Chemistry"
DOI: 10.1002/ejic.201801343
Abstract: The new complex [Mn(bipyalk)(H2O)(μ-O)2Mn(bipyalk)](OTf)2 (bipyalk = 2-([2,2'-bipyridin]-6-yl)propan-2-ate) catalyzes oxygen evolution with a TOF of 0.0055 s when driven by the sacrificial oxidant KHSO5 in water. It is proposed on the basis of EPR experiments that… read more here.
Keywords: oxygen evolution; oxidation states; pincer ligand;
A bis(arylphosphinito)amide pincer ligand that binds nickel forming six-membered metallacycles
Sign Up to like & getrecommendations! Published in 2020 at "Polyhedron"
DOI: 10.1016/j.poly.2020.114380
Abstract: Abstract The synthesis of a bis(arylphosphinito)amide pincer ligand P2ONO− designed to form two six-membered rings upon metallation is reported. Phosphination of a known bis(phenolato)amide ONO3− scaffold led to isolation of two isomers: the intended H(P2ONO)… read more here.
Keywords: six membered; amide pincer; bis arylphosphinito; pincer ligand ... See more keywords
An efficient route to unsymmetrical bis(azolium) salts: CCC-NHC pincer ligand complex precursors
Sign Up to like & getrecommendations! Published in 2017 at "Tetrahedron"
DOI: 10.1016/j.tet.2017.02.020
Abstract: Abstract The coupling of N-heterocyclic azoles (imidazoles, benzimidazoles, triazoles) to bromobenzenes (1,2-; 1,3-; or 1,4) in a step-wise, sequential manner was accomplished by manipulation of reaction time and stoichiometry, which provided straight-forward access to unsymmetrical… read more here.
Keywords: bis azolium; unsymmetrical bis; azolium salts; bis ... See more keywords
A Ruthenium Hydrido Dinitrogen Core Conserved across Multielectron/Multiproton Changes to the Pincer Ligand Backbone.
Sign Up to like & getrecommendations! Published in 2018 at "Inorganic chemistry"
DOI: 10.1021/acs.inorgchem.7b02889
Abstract: A series of ruthenium(II) hydrido dinitrogen complexes supported by pincer ligands in different formal oxidation states have been prepared and characterized. Treating a ruthenium dichloride complex supported by the pincer ligand bis(di-tert-butylphosphinoethyl)amine (H-PNP) with reductant… read more here.
Keywords: hydrido dinitrogen; ruthenium hydrido; spectroscopy; pincer ligand ... See more keywords
Seeking Redox Activity in a Tetrazinyl Pincer Ligand: Installing Zerovalent Cr and Mo.
Sign Up to like & getrecommendations! Published in 2018 at "Inorganic chemistry"
DOI: 10.1021/acs.inorgchem.8b01761
Abstract: Reaction of the readily reduced pincer ligand bis-tetrazinylpyridine, btzp, with the zerovalent metal source M(CO)3(MeCN)3 yields M(btzp)2 for M = Cr, Mo. These diamagnetic molecules show intrapincer bond lengths consistent with major charge transfer from… read more here.
Keywords: pincer; metal; zerovalent; seeking redox ... See more keywords
Mn(iv) and Mn(v)-radical species supported by the redox non-innocent bis(2-amino-3,5-di-tert-butylphenyl)amine pincer ligand.
Sign Up to like & getrecommendations! Published in 2017 at "Chemical communications"
DOI: 10.1039/c7cc00516d
Abstract: The electron-rich pincer ligand 1 has been synthesized and chelated to manganese. The octahedral Mn(iv) bis(diiminosemiquinonate) and Mn(v) (diiminobenzoquinone) (diiminosemiquinonate) radicals were structurally characterized. read more here.
Keywords: pincer; species supported; bis; radical species ... See more keywords
Dehydrohalogenation of proton responsive complexes: versatile aggregation via pyrazolate pincer ligand arms.
Sign Up to like & getrecommendations! Published in 2018 at "Dalton transactions"
DOI: 10.1039/c7dt04253a
Abstract: The behavior of the complex (H2L)CoCl2, where H2L is a bis-(pyrazol-3-yl)pyridine, towards Brønsted bases is studied, to evaluate peripheral NH deprotonation as a route to a dianionic pincer ligand on a d7 center. Deprotonation is… read more here.
Keywords: pincer; pyrazolate; dehydrohalogenation proton; pincer ligand ... See more keywords
Monomeric nickel hydroxide stabilized by a sterically demanding phosphorus-nitrogen PN3P-pincer ligand: synthesis, reactivity and catalysis.
Sign Up to like & getrecommendations! Published in 2018 at "Dalton transactions"
DOI: 10.1039/c8dt03403f
Abstract: A terminal nickel hydroxide complex (PN3P)Ni(OH) (3) bearing the 2nd generation phosphorus-nitrogen PN3P-pincer ligand has been synthesized and structurally characterized. As a nucleophile, 3 reacts with CO to afford the hydroxycarbonyl complex 4, (PN3P)Ni(COOH). 3… read more here.
Keywords: pincer ligand; pn3p; nickel hydroxide; nitrogen pn3p ... See more keywords
A non-symmetric sulfur-based O,C,O-chelating pincer ligand leading to chiral germylene and stannylene.
Sign Up to like & getrecommendations! Published in 2019 at "Dalton transactions"
DOI: 10.1039/c8dt05116j
Abstract: New chiral heteroleptic germanium(ii) and tin(ii) metallylenes were obtained using 1-(para-tolylsulfinyl)-3-tosyl-5-tert-butyl-benzene as a non-symmetric O,C,O-chelating pincer ligand. Crystallographic analysis and DFT calculations indicate that the non-symmetric sulfinyl-sulfonyl pincer ligand acts as an O,C,O-coordinating pincer-type-ligand with… read more here.
Keywords: pincer; non symmetric; symmetric sulfur; pincer ligand ... See more keywords
Synthesis and reactivity of iridium complexes of a macrocyclic PNP pincer ligand.
Sign Up to like & getrecommendations! Published in 2021 at "Dalton transactions"
DOI: 10.1039/d0dt04303f
Abstract: Having recently reported on the synthesis and rhodium complexes of the novel macrocyclic pincer ligand PNP-14, which is derived from lutidine and features terminal phosphine donors trans-substituted with a tetradecamethylene linker (Dalton Trans., 2020, 49,… read more here.
Keywords: pnp; iridium; pincer ligand; iridium iii ... See more keywords
Group 3 dialkyl complexes of a rigid monoanionic NNN-donor pincer ligand: synthesis, structures, unexpected reactivity with CPh3+, and hydroamination catalysis.
Sign Up to like & getrecommendations! Published in 2023 at "Dalton transactions"
DOI: 10.1039/d3dt00530e
Abstract: Palladium-catalyzed coupling of 4,5-dibromo-2,7,9,9-tetramethylacridan with two equivalents of 1,3-diisopropylimidazolin-2-imine afforded 4,5-bis(1,3-diisopropylimidazolin-2-imino)-2,7,9,9-tetramethylacridan, H[AII2]. Reaction of the H[AII2] pro-ligand with one equivalent of [M(CH2SiMe3)3(THF)2] (M = Y or Sc) yielded the base-free neutral dialkyl complexes [(AII2)M(CH2SiMe3)2] {M… read more here.
Keywords: dialkyl complexes; unexpected reactivity; cph3; ligand ... See more keywords