0000000000804038
AUTHOR
Pasi Salonen
Amide functionalized aminobisphenolato MoO2 and WO2 complexes: Synthesis, characterization, and alkene epoxidation catalysis
The use of dioxidomolybdenum(vi) and -tungsten(vi) complexes supported by a variety of structurally different tri- and tetradentate aminobisphenolato ligands as pre-catalysts in the epoxidation of alkenes is well established. However, under the widely used standard 1 mol-% catalyst loadings these types of complexes generally show modest activity only. Recently, amide functionalities in the ligand design of various aminomonophenolato MoO2 complexes have been shown to lead to heightened catalytic activity in alkene epoxidation. In this paper we show that similar ligand amide functionalization can lead to significant enhancement in the alkene epoxidation activity of aminobisphenolato MoO2 comp…
Oxidovanadium(v) complexes with l-proline-based amino acid phenolates
L-proline was used to prepare chiral, tridentate amino acid phenol proligands H2L1—4. These proligands react with vanadium precursors VO(acac)2, VOSO4 ∙ 5 H2O and VO(OPr)3 in methanol to form the corresponding oxidoalkoxidovanadium(V) complexes 1—4. The complexes crystallize from methanol, and are octahedrally coordinated with a general formula [VO(L1—4)(OMe)(MeOH)]. In solution, however, they adopt several different conformations or isomeric structures depending on the solvent. peerReviewed
Oxidovanadium(V) amine bisphenolates as epoxidation, sulfoxidation and catechol oxidation catalysts
Air-stable oxidovanadium(V) complexes with tetradentate amine bisphenolate ligands were made by the reaction of VOSO4·xH2O and ligand precursors in MeOH solutions. Isolated compounds were studied as catechol oxidase models as well as catalysts for epoxidation and sulfoxidation reactions. All compounds can catalyse such oxidation reactions without notable structure-activity correlations. The 51V NMR studies indicate that the complexes turn to the number of different species during the catalytic experiments. peerReviewed
Bioinspired Mo, W and V complexes bearing a highly hydroxyl-functionalized Schiff base ligand
A series of bioinspired dioxidomolybdenum(vi), dioxidotungsten(vi) and oxidovanadium(v) complexes [MoO2(H2LSaltris)], [WO2(H2LSaltris)] and [VO(HLSaltris)]2 were prepared by the reaction of a hydroxyl-rich Schiff base proligand N-(1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl)-3,5-di-tert-butylsalicylaldimine (H4LSaltris) with metal precursors in methanol solutions. Molybdenum and tungsten complexes crystallize as mononuclear molecules, whereas the vanadium complex forms dinuclear units. From the complexes, [VO(HLSaltris)]2 shows activity in the oxidation of 4-tert-butylcatechol and 3,5-di-tert-butylcatechol, mimicking the action of the dicopper enzyme catechol oxidase. peerReviewed
Oxidovanadium(v) complexes with l-proline-based amino acid phenolates
Abstract l -proline was used to prepare chiral, tridentate amino acid phenol proligands H2L1–4. These proligands react with vanadium precursors VO(acac)2, VOSO4∙5H2O and VO(OPr)3 in methanol to form the corresponding oxidoalkoxidovanadium( v ) complexes 1–4. The complexes crystallize from methanol, and are octahedrally coordinated with a general formula [VO(L1–4)(OMe)(MeOH)]. In solution, however, they adopt several different conformations or isomeric structures depending on the solvent.
Molybdenum(VI) complexes with a chiral L-alanine bisphenol [O,N,O,O’] ligand : Synthesis, structure, spectroscopic properties and catalytic activity
Dioxidomolybdenum(VI) compound [MoO2Cl2(dmso)2] reacts with a chiral tetradentate O3N-type L-alanine bisphenol ligand precursor (Et3NH)H2Lala to form an oxidochloridomolybdenum(VI) complex [MoOCl(Lala)] (1) as two separable geometric isomers with phenolate groups in cis or trans positions. The single crystal X-ray and NMR analyses of cis- and trans-1 reveal that the complexes are formed of monomeric molecules, in which the ligand has a tetradentate coordination through three oxygen donors and one nitrogen donor. The reaction of Na2MoO4·2H2O with the same ligand precursor in an acidic methanol solution leads to the formation of an anionic dioxido complex (Et3NH)[MoO2(Lala)] (2) with a trans …
Bioinspired Mo, W and V complexes bearing a highly hydroxyl-functionalized Schiff base ligand
Abstract A series of bioinspired dioxidomolybdenum( vi), dioxidotungsten (vi) and oxidovanadium (v) complexes [MoO2(H2LSaltris)], [WO2(H2LSaltris)] and [VO(HLSaltris)]2 were prepared by the reaction of a hydroxyl-rich Schiff base proligand N-(1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl)-3,5-di-tert-butylsalicylaldimine (H4LSaltris) with metal precursors in methanol solutions. Molybdenum and tungsten complexes crystallize as mononuclear molecules, whereas the vanadium complex forms dinuclear units. From the complexes, [VO(HLSaltris)]2 shows activity in the oxidation of 4-tert-butylcatechol and 3,5-di-tert-butylcatechol, mimicking the action of the dicopper enzyme catechol oxidase.
CCDC 1959439: Experimental Crystal Structure Determination
Related Article: Pasi Salonen, Anssi Peuronen, Ari Lehtonen|2020|Inorg.Chim.Acta|503|119414|doi:10.1016/j.ica.2020.119414
CCDC 1855152: Experimental Crystal Structure Determination
Related Article: Pasi Salonen, Anssi Peuronen, Jari Sinkkonen, Ari Lehtonen|2019|Inorg.Chim.Acta|489|108|doi:10.1016/j.ica.2019.02.011
CCDC 1959438: Experimental Crystal Structure Determination
Related Article: Pasi Salonen, Anssi Peuronen, Ari Lehtonen|2020|Inorg.Chim.Acta|503|119414|doi:10.1016/j.ica.2020.119414
CCDC 2158304: Experimental Crystal Structure Determination
Related Article: Pasi Salonen, Jörg A. Schachner, Anssi Peuronen, Manu Lahtinen, Ferdinand Belaj, Nadia Carmen Mösch-Zanetti, Ari Lehtonen|2023|Mol.Catal.|540|113034|doi:10.1016/j.mcat.2023.113034
CCDC 1959437: Experimental Crystal Structure Determination
Related Article: Pasi Salonen, Anssi Peuronen, Ari Lehtonen|2020|Inorg.Chim.Acta|503|119414|doi:10.1016/j.ica.2020.119414
CCDC 1855149: Experimental Crystal Structure Determination
Related Article: Pasi Salonen, Anssi Peuronen, Jari Sinkkonen, Ari Lehtonen|2019|Inorg.Chim.Acta|489|108|doi:10.1016/j.ica.2019.02.011
CCDC 1569236: Experimental Crystal Structure Determination
Related Article: Pasi Salonen, Anssi Peuronen, Ari Lehtonen|2017|Inorg.Chem.Commun.|86|165|doi:10.1016/j.inoche.2017.10.017
CCDC 2157985: Experimental Crystal Structure Determination
Related Article: Pasi Salonen, Jörg A. Schachner, Anssi Peuronen, Manu Lahtinen, Ferdinand Belaj, Nadia Carmen Mösch-Zanetti, Ari Lehtonen|2023|Mol.Catal.|540|113034|doi:10.1016/j.mcat.2023.113034
CCDC 2157989: Experimental Crystal Structure Determination
Related Article: Pasi Salonen, Jörg A. Schachner, Anssi Peuronen, Manu Lahtinen, Ferdinand Belaj, Nadia Carmen Mösch-Zanetti, Ari Lehtonen|2023|Mol.Catal.|540|113034|doi:10.1016/j.mcat.2023.113034
CCDC 1855150: Experimental Crystal Structure Determination
Related Article: Pasi Salonen, Anssi Peuronen, Jari Sinkkonen, Ari Lehtonen|2019|Inorg.Chim.Acta|489|108|doi:10.1016/j.ica.2019.02.011
CCDC 1855151: Experimental Crystal Structure Determination
Related Article: Pasi Salonen, Anssi Peuronen, Jari Sinkkonen, Ari Lehtonen|2019|Inorg.Chim.Acta|489|108|doi:10.1016/j.ica.2019.02.011
CCDC 2157988: Experimental Crystal Structure Determination
Related Article: Pasi Salonen, Jörg A. Schachner, Anssi Peuronen, Manu Lahtinen, Ferdinand Belaj, Nadia Carmen Mösch-Zanetti, Ari Lehtonen|2023|Mol.Catal.|540|113034|doi:10.1016/j.mcat.2023.113034
CCDC 2129454: Experimental Crystal Structure Determination
Related Article: Pasi Salonen, Jörg A. Schachner, Anssi Peuronen, Manu Lahtinen, Ferdinand Belaj, Nadia Carmen Mösch-Zanetti, Ari Lehtonen|2023|Mol.Catal.|540|113034|doi:10.1016/j.mcat.2023.113034
CCDC 2157986: Experimental Crystal Structure Determination
Related Article: Pasi Salonen, Jörg A. Schachner, Anssi Peuronen, Manu Lahtinen, Ferdinand Belaj, Nadia Carmen Mösch-Zanetti, Ari Lehtonen|2023|Mol.Catal.|540|113034|doi:10.1016/j.mcat.2023.113034
CCDC 2157987: Experimental Crystal Structure Determination
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CCDC 2157984: Experimental Crystal Structure Determination
Related Article: Pasi Salonen, Jörg A. Schachner, Anssi Peuronen, Manu Lahtinen, Ferdinand Belaj, Nadia Carmen Mösch-Zanetti, Ari Lehtonen|2023|Mol.Catal.|540|113034|doi:10.1016/j.mcat.2023.113034
CCDC 2129453: Experimental Crystal Structure Determination
Related Article: Pasi Salonen, Jörg A. Schachner, Anssi Peuronen, Manu Lahtinen, Ferdinand Belaj, Nadia Carmen Mösch-Zanetti, Ari Lehtonen|2023|Mol.Catal.|540|113034|doi:10.1016/j.mcat.2023.113034