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Shaw TE, Diethrich TJ, Stern CL, Scott BL, Jurca T, Gilbert TM, Sattelberger AP. Synthesis, characterization, X-ray and electronic structures of diethyl ether and 1,2-dimethoxyethane adducts of molybdenum(IV) chloride and tungsten(IV) chloride. Dalton Trans 2022; 51:7856-7863. [PMID: 35531983 DOI: 10.1039/d2dt00787h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The bis(diethyl ether) and 1,2-dimethoxyethane (dme) adducts of molybdenum(IV) chloride and tungsten(IV) chloride are valuable starting materials for a variety of synthetic inorganic and organometallic reactions. Despite the broad utility and extensive use of these 6-coordinate complexes, their syntheses remain unoptimized, and their characterization incomplete after more than three decades. While exploring the ligand exchange behaviour of trans-MoCl4(OEt2)2, we obtained single crystals of this red-orange complex and subsequently compared its structural parameters with those of the recently reported trans-WCl4(OEt2)2. Significantly improved procedures for both MoCl4(dme) and WCl4(dme) were developed, and X-ray diffraction data were obtained and analysed. The magnetic properties of the dme adducts were probed, both with Gouy and SQUID magnetometry measurements. The magnetic moment of WCl4(dme) was smaller than that of MoCl4(dme), an observation that we attribute to the greater spin-orbit coupling of tungsten. Electronic structure studies were also conducted to probe the preferential trans configuration of the diethyl ether adducts and to assign the UV-Vis spectra of the dme adducts.
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Affiliation(s)
- Thomas E Shaw
- Department of Chemistry, University of Central Florida, Orlando, FL 32816, USA. .,Renewable Energy and Chemical Transformations (REACT) Cluster, University of Central Florida, Orlando, FL 32816, USA
| | - Timothy J Diethrich
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA
| | - Charlotte L Stern
- Department of Chemistry, Northwestern University, Evanston, IL 60208, USA
| | - Brian L Scott
- Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - Titel Jurca
- Department of Chemistry, University of Central Florida, Orlando, FL 32816, USA. .,Renewable Energy and Chemical Transformations (REACT) Cluster, University of Central Florida, Orlando, FL 32816, USA
| | - Thomas M Gilbert
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL 60115, USA.
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2
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Greenacre VK, Levason W, Powell J, Reid G, Smith DE. The reactions of MoOCl4 with neutral group 15 and 16 ligands and a re-investigation of some N-donor ligand complexes of MoOCl3. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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3
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Smith DE, Levason W, Powell J, Reid G. Synthesis, properties and structural features of molybdenum(v) oxide trichloride complexes with neutral chalcogenoether ligands. Dalton Trans 2021; 50:4380-4389. [PMID: 33704331 DOI: 10.1039/d1dt00038a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Complexes of oxotrichloromolybdenum(v) with neutral group 16 donor ligands, [MoOCl3(L-L)] (L-L = RS(CH2)2SR, R = iPr, Ph; MeS(CH2)3SMe; MeSe(CH2)2SeMe; MeSe(CH2)3SeMe), [{MoOCl2(EMe2)}2(μ-Cl)2] (E = S, Se, Te), [(MoOCl3)2{o-C6H4(EMe)2}]n (E = Se or Te) and [(MoOCl3)2{MeTe(CH2)3TeMe}]n, have been obtained by reaction of the ligands with [MoOCl3(thf)2] or MoOCl3 in either CH2Cl2 or toluene, and characterised by microanalysis, IR and UV-visible spectroscopy and magnetic measurements. The telluroethers are the first examples containing Mo in a positive oxidation state. X-ray crystal structures are reported for the six-coordinate fac-[MoOCl3{MeS(CH2)3SMe}], mer-[MoOCl3{iPrS(CH2)2SiPr}] and mer-[MoOCl3{MeSe(CH2)2SeMe}], as well as the six-coordinate chloride-bridged dimers, [{MoOCl2(SMe2)}2(μ-Cl)2] and [{MoOCl2(SeMe2)}2(μ-Cl)2]. The structure of the mixed-valence decomposition product, [MoIVCl{o-C6H4(TeMe)2}2(μ-O)MoVOCl4], was also determined. In toluene solution MoOCl4 is reduced by MeS(CH2)3SMe to produce the Mo(v) complex, [MoOCl3{ MeS(CH2)3SMe}]. Crystal structures of the previously unknown diphosphine analogue, [MoOCl3{Me2P(CH2)2PMe2}], and the mixed-valence derivative [MoIVCl{Me2P(CH2)2PMe2}2(μ-O)MoVOCl4] are also reported for comparison and help to clarify earlier contradictory literature reports. In contrast to the dimeric EMe2 complexes, [{MoOCl2(EMe2)}2(μ-Cl)2], PMe3 forms the monomeric complex, fac-[MoOCl3(PMe3)2].
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Affiliation(s)
- Danielle E Smith
- School of Chemistry, University of Southampton, Southampton SO17 1BJ, UK.
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4
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Bartalucci N, Marchetti F, Zacchini S, Pampaloni G. Decarbonylation of phenylacetic acids by high valent transition metal halides. Dalton Trans 2019; 48:5725-5734. [DOI: 10.1039/c9dt00551j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The unusual decarbonylation of α-phenyl carboxylic acids with suitable substituents is a general reaction promoted at room temperature by homoleptic halides of high valent transition metals.
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Affiliation(s)
- Niccolò Bartalucci
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- I-56124 Pisa
- Italy
| | - Fabio Marchetti
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- I-56124 Pisa
- Italy
| | - Stefano Zacchini
- Dipartimento di Chimica Industriale “Toso Montanari”
- Università di Bologna
- I-40136 Bologna
- Italy
| | - Guido Pampaloni
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- I-56124 Pisa
- Italy
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5
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Beil SB, Uecker I, Franzmann P, Müller T, Waldvogel SR. Mild, Fast, and Easy To Conduct MoCl5-Mediated Dehydrogenative Coupling Reactions in Flow. Org Lett 2018; 20:4107-4110. [DOI: 10.1021/acs.orglett.8b01664] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sebastian B. Beil
- Institute of Organic Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
- MAterial Science IN MainZ (MAINZ), Graduate School of Excellence, Staudingerweg 9, 55128 Mainz, Germany
| | - Ise Uecker
- Institute of Organic Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Peter Franzmann
- Institute of Organic Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Timo Müller
- Institute of Organic Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Siegfried R. Waldvogel
- Institute of Organic Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
- MAterial Science IN MainZ (MAINZ), Graduate School of Excellence, Staudingerweg 9, 55128 Mainz, Germany
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6
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Dang DH, Evans RD. Application of ESI-HRMS for molybdenum speciation in natural waters: An investigation of molybdate-halide reactions. Talanta 2018; 179:221-229. [PMID: 29310226 DOI: 10.1016/j.talanta.2017.11.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 10/31/2017] [Accepted: 11/01/2017] [Indexed: 11/24/2022]
Abstract
High resolution electrospray ionization mass spectrometry (ESI-HRMS) was used to study the speciation of molybdate in interaction with halides (Cl, F, Br). Desolvation during electrospray ionization induced alteration of aqueous species but method optimization successfully suppressed artefact compounds. At low Mo concentrations, chloro(oxo)molybdate and fluoro(oxo)molybdate species were found and in natural samples, MoO3Cl was detected for the first time, to the best of our knowledge. Apparent equilibrium constants for Cl substitution on molybdate were calculated for a range of pH values from 4.5 to 8.5. A minor alteration in speciation during the gas phase (conversion of doubly charged MoO42- to HMoO4-) did not allow investigation of the molybdate acid-base properties; however this could be determined by speciation modeling. This study provides further evidence that ESI-HRMS is a fast and suitable tool to Deceasedassess the speciation of inorganic compounds such as Mo.
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Affiliation(s)
- Duc Huy Dang
- School of the Environment, Trent University, 1600 West Bank Drive, Peterborough, ON, Canada K9L 0G2.
| | - R Douglas Evans
- School of the Environment, Trent University, 1600 West Bank Drive, Peterborough, ON, Canada K9L 0G2; Water Quality Centre, Trent University, 1600 West Bank Drive, Peterborough, ON, Canada K9L 0G2.
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7
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Bartalucci N, Bortoluzzi M, Zacchini S, Pampaloni G, Marchetti F. Activation of CN bonds by high-valent group 6 metal chlorides, including the conversion of an α-diimine into a functionalized imidazolium. NEW J CHEM 2018. [DOI: 10.1039/c8nj00846a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The direct interactions of WCl6and MoCl5with α-diimines (and also a carbodiimide in the case of MoCl5) have been explored, leading to unusual reaction pathways.
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Affiliation(s)
- Niccolò Bartalucci
- Università di Pisa
- Dipartimento di Chimica e Chimica Industriale
- I-56124 Pisa
- Italy
- CIRCC
| | - Marco Bortoluzzi
- CIRCC
- I-70126 Bari
- Italy
- Università Ca’ Foscari Venezia
- Dipartimento di Scienze Molecolari e Nanosistemi
| | - Stefano Zacchini
- CIRCC
- I-70126 Bari
- Italy
- Università di Bologna
- Dipartimento di Chimica Industriale “Toso Montanari”
| | - Guido Pampaloni
- Università di Pisa
- Dipartimento di Chimica e Chimica Industriale
- I-56124 Pisa
- Italy
- CIRCC
| | - Fabio Marchetti
- Università di Pisa
- Dipartimento di Chimica e Chimica Industriale
- I-56124 Pisa
- Italy
- CIRCC
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8
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Bartalucci N, Bortoluzzi M, Pampaloni G, Pinzino C, Zacchini S, Marchetti F. Stable coordination complexes of α-diimines with Nb(v) and Ta(v) halides. Dalton Trans 2018; 47:3346-3355. [DOI: 10.1039/c8dt00122g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Uncommon coordination compounds of high valent transition metal halides with N-aryl α-diimines have been obtained, without the need for reducing agents to quench the activation power of the metal centre.
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Affiliation(s)
- Niccolò Bartalucci
- Università di Pisa
- Dipartimento di Chimica e Chimica Industriale
- I-56124 Pisa
- Italy
- CIRCC
| | - Marco Bortoluzzi
- CIRCC
- I-70126 Bari
- Italy
- Università Ca’ Foscari Venezia
- Dipartimento di Scienze Molecolari e Nanosistemi
| | - Guido Pampaloni
- Università di Pisa
- Dipartimento di Chimica e Chimica Industriale
- I-56124 Pisa
- Italy
- CIRCC
| | | | - Stefano Zacchini
- CIRCC
- I-70126 Bari
- Italy
- Università di Bologna
- Dipartimento di Chimica Industriale “Toso Montanari”
| | - Fabio Marchetti
- Università di Pisa
- Dipartimento di Chimica e Chimica Industriale
- I-56124 Pisa
- Italy
- CIRCC
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9
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Chang YP, Hector AL, Levason W, Reid G, Whittam J. Synthesis and properties of MoCl4complexes with thio- and seleno-ethers and their use for chemical vapour deposition of MoSe2and MoS2films. Dalton Trans 2018; 47:2406-2414. [DOI: 10.1039/c7dt04352j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new series of Mo(iv) chloride complexes with thioether and seleneoether ligands is reported; [MoCl4(nBu2E)2] (E = S, Se) function as single source precursors for the CVD of MoE2thin films.
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Affiliation(s)
- Yao-Pang Chang
- Chemistry
- University of Southampton
- Southampton SO17 1BJ
- UK
| | | | | | - Gillian Reid
- Chemistry
- University of Southampton
- Southampton SO17 1BJ
- UK
| | - Joshua Whittam
- Chemistry
- University of Southampton
- Southampton SO17 1BJ
- UK
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10
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Bortoluzzi M, Bresciani G, Marchetti F, Pampaloni G, Zacchini S. Synthesis and structural characterization of mixed halide–N,N-diethylcarbamates of group 4 metals, including a case of unusual tetrahydrofuran activation. NEW J CHEM 2017. [DOI: 10.1039/c6nj03489f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A straightforward synthesis of dichloride-dicarbamates of group 4 metals consists of the metathesis reaction of the respective tetrahalides with tetracarbamates.
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Affiliation(s)
- Marco Bortoluzzi
- Ca’ Foscari University of Venice
- Dipartimento di Scienze Molecolari e Nanosistemi
- I-30175 Mestre
- Italy
- CIRCC
| | - Giulio Bresciani
- University of Pisa
- Dipartimento di Chimica e Chimica Industriale
- I-56124 Pisa
- Italy
| | - Fabio Marchetti
- CIRCC
- I-70126 Bari
- Italy
- University of Pisa
- Dipartimento di Chimica e Chimica Industriale
| | - Guido Pampaloni
- CIRCC
- I-70126 Bari
- Italy
- University of Pisa
- Dipartimento di Chimica e Chimica Industriale
| | - Stefano Zacchini
- CIRCC
- I-70126 Bari
- Italy
- University of Bologna
- Dipartimento di Chimica Industriale “Toso Montanari”
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11
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12
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Bortoluzzi M, Ferretti E, Hayatifar M, Marchetti F, Pampaloni G, Zacchini S. One‐Pot Intermolecular C–S Self‐Coupling of Dimethyl Sulfoxide Promoted by Molybdenum Pentachloride. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600611] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Marco Bortoluzzi
- Ca' Foscari Università di Venezia Dipartimento di Scienze Molecolari e Nanosistemi Via Torino 15530170Mestre (VE)Italy
| | - Eleonora Ferretti
- Università di Pisa Dipartimento di Chimica e Chimica Industriale Via Moruzzi 1356124PisaItaly
| | - Mohammad Hayatifar
- Università di Pisa Dipartimento di Chimica e Chimica Industriale Via Moruzzi 1356124PisaItaly
| | - Fabio Marchetti
- Università di Pisa Dipartimento di Chimica e Chimica Industriale Via Moruzzi 1356124PisaItaly
| | - Guido Pampaloni
- Università di Pisa Dipartimento di Chimica e Chimica Industriale Via Moruzzi 1356124PisaItaly
| | - Stefano Zacchini
- Università di Bologna Dipartimento di Chimica Industriale “Toso Montanari” Viale Risorgimento 440136BolognaItaly
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13
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Bortoluzzi M, Marchetti F, Pampaloni G, Zacchini S. Reactivity of [WCl6] with Ethers: A Joint Computational, Spectroscopic and Crystallographic Study. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600308] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Marco Bortoluzzi
- Ca'Foscari University of Venezia Dipartimento di Scienze Molecolari e Nanosistemi Via Torino 155 30170 Mestre (VE) Italy
| | - Fabio Marchetti
- Università di Pisa Dipartimento di Chimica e Chimica Industriale Via Moruzzi 13 56124 Pisa Italy
| | - Guido Pampaloni
- Università di Pisa Dipartimento di Chimica e Chimica Industriale Via Moruzzi 13 56124 Pisa Italy
| | - Stefano Zacchini
- Università di Bologna Dipartimento di Chimica Industriale “Toso Montanari” Viale Risorgimento 4 40136 Bologna Italy
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14
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Molybdenum(V) and molybdenum(IV) coordination compounds from the reactions of MoCl5 with sulfones. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.09.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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15
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Di Nicola FP, Lanzi M, Marchetti F, Pampaloni G, Zacchini S. Is bond stretch isomerism in mononuclear transition metal complexes a real issue? The misleading case of the MoCl5/tetrahydropyran reaction system. Dalton Trans 2015; 44:12653-9. [PMID: 26080003 DOI: 10.1039/c5dt01378j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Distinct batches of orange (1a-e) and green crystals (2a-e) were isolated from the reactions of MoCl5 with tetrahydropyran (thp), respectively at room temperature (in CH2Cl2) and at ca. 80 °C (in ClCH2CH2Cl). Crystals 2a-e are isomorphous to 1a-e and the IR spectra are almost superimposable. 1a-e were identified by X-ray studies as cis-MoCl4(thp)2, in agreement with previous findings. Careful refinement of the X-ray data of 2a-e by modeling one position as disordered between chlorine (minor component) and oxygen (major component) led to the conclusion that 2a-e consisted of a mixture of cis-MoCl4(thp)2 and mer-MoOCl3(thp)2, the latter being largely prevalent.
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Affiliation(s)
- Francesco Paolo Di Nicola
- University of Bologna, Dipartimento di Chimica Industriale "Toso Montanari", Viale Risorgimento 4, I-40136 Bologna, Italy
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16
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Bortoluzzi M, Bresciani G, Marchetti F, Pampaloni G, Zacchini S. MoCl5 as an effective chlorinating agent towards α-amino acids: synthesis of α-ammonium-acylchloride salts and α-amino-acylchloride complexes. Dalton Trans 2015; 44:10030-7. [PMID: 25948387 DOI: 10.1039/c5dt01002k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The reactivity of MoCl5 with α-amino acids was investigated for the first time by choosing CH2Cl2 as the reaction medium. The interaction of MoCl5 with l-proline proceeded with Cl/O interchange and led to the formation of [NH2(CH2)3CHC(O)Cl][MoOCl4], 1, in 63% yield. The reactions of MoCl5 with l-phenylalanine, sarcosine, N,N-dimethylglycine and N,N-dimethyl-l-phenylalanine afforded the α-amino-acylchloride complexes MoOCl3[O[double bond, length as m-dash]C(Cl)CH(R)N(R')(R'')] (R = CH2Ph, R' = R'' = H, 2a; R = R' = H, R'' = Me, 2b; R = H, R' = R'' = Me, 2c R = CH2Ph, R' = R'' = Me, 2d), in ca. 70% yields. According to DFT studies, 2a,d are mononuclear Mo(v) octahedral complexes bearing a N,O-coordinated α-amino-acylchloride ligand. The presumed species formed during the first stages of the MoCl5/l-phenylalanine interaction were DFT-elucidated, thus the calculated Gibbs free energy profile for the multi-step reaction of MoCl5 with l-phenylalanine was traced. [NH3CH(CH2Ph)C(O)Cl][MoOCl4], 3, acting as an intermediate in the course of the formation of 2a, was isolated by combination of [NH3CH(CH2Ph)C(O)Cl][Cl] with MoOCl3.
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Affiliation(s)
- Marco Bortoluzzi
- Ca' Foscari University of Venezia, Dipartimento di Scienze Molecolari e Nanosistemi, Dorsoduro 2137, I-30123 Venezia, Italy
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17
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Bortoluzzi M, Hayatifar M, Marchetti F, Pampaloni G, Zacchini S. Synthesis of α-amino acidato derivatives of niobium and tantalum pentahalides and their conversion into iminium salts. Inorg Chem 2015; 54:4047-55. [PMID: 25844933 DOI: 10.1021/acs.inorgchem.5b00286] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Dinuclear complexes of formula Nb2Cl9[O2CCH(R)NR'R″2-κO,κO] (R = CH2CHMe2, R' = R″ = H, 1a; R = CH2Ph, R' = R″ = H, 1b; R = CH2CH2SCH3, R' = R″ = H, 1c; R = R' = H, R″ = Me, 1d; R = CH2Ph, R' = R″ = Me, 1e; Nb2Cl9[O2C⌈CH(CH2)3NH⌉], 1f) were prepared by allowing NbCl5 to react in dichloromethane with the appropriate α-amino acid in 1:2 amino acid/Nb molar ratio. The 1:1 reactions between MX5 (M = Nb, Ta; X = Cl, Br) and a series of α-amino acids resulted in the formation of the iminium salts [(R)CH═NR'R″2][MX6] (R = CH2Ph, R' = R″ = Me: M = Nb, X = Cl, 2a; M = Nb, X = Br, 2b; M = Ta, X = Cl, 2c; M = Ta, X = Br, 2d; R = CH2Ph, R' = R″ = H, M = Nb: X = Cl, 3a; X = Br, 3b; R = CH2CHMe2, R' = R″ = H, M = Nb, X = Cl, 4; R = R' = H, R″ = Me, M = Nb, X = Cl, 5). The formate/amino acidate derivative NbCl3(O2CH)[O2CCH(CH2Ph)NMe2], 6, was isolated and identified as coproduct of the 1:1 reaction between NbCl5 and N,N-dimethyl-l-phenylalanine, leading to 2a. All of the compounds were characterized by analytical and spectroscopic methods and by X-ray diffractometry in the cases of 2a, 2b, and 2d. Moreover, density functional theory studies were carried out to shed light on mechanistic and structural aspects.
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Affiliation(s)
- Marco Bortoluzzi
- †Dipartimento di Scienze Molecolari e Nanosistemi, Ca' Foscari Università di Venezia, Dorsoduro 2137, 30123 Venezia, Italy
| | - Mohammad Hayatifar
- §Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy
| | - Fabio Marchetti
- ‡Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via G. Moruzzi 3, I-56124 Pisa, Italy
| | - Guido Pampaloni
- ‡Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via G. Moruzzi 3, I-56124 Pisa, Italy
| | - Stefano Zacchini
- §Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy
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Kuznetsov DA, Fedyanin IV, Komarova NS, Shilov GV, Martynenko VM, Vasil'ev SG, Krivenko AG, Lyssenko KA, Bazhenova TA. Developing Pathways to the Synthesis of Low‐Valence Molybdenum Methoxides: Preparation, Characterization, and Redox Chemistry of Dimeric and Tetrameric Molybdenum Alkoxide Clusters. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201403032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Denis A. Kuznetsov
- Institute of Problems of Chemical Physics of the Russian Academy of Sciences, Chernogolovka, Moscow region, 142432, Russian Federation, http://www.icp.ac.ru
| | - Ivan V. Fedyanin
- A. N. Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, Moscow, 119991, Russian Federation http://www.ineos.ac.ru
| | - Natal'ya S. Komarova
- Institute of Problems of Chemical Physics of the Russian Academy of Sciences, Chernogolovka, Moscow region, 142432, Russian Federation, http://www.icp.ac.ru
| | - Gennady V. Shilov
- Institute of Problems of Chemical Physics of the Russian Academy of Sciences, Chernogolovka, Moscow region, 142432, Russian Federation, http://www.icp.ac.ru
| | - Vyacheslav M. Martynenko
- Institute of Problems of Chemical Physics of the Russian Academy of Sciences, Chernogolovka, Moscow region, 142432, Russian Federation, http://www.icp.ac.ru
| | - Sergey G. Vasil'ev
- Institute of Problems of Chemical Physics of the Russian Academy of Sciences, Chernogolovka, Moscow region, 142432, Russian Federation, http://www.icp.ac.ru
| | - Alexander G. Krivenko
- Institute of Problems of Chemical Physics of the Russian Academy of Sciences, Chernogolovka, Moscow region, 142432, Russian Federation, http://www.icp.ac.ru
| | - Konstantin A. Lyssenko
- A. N. Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, Moscow, 119991, Russian Federation http://www.ineos.ac.ru
| | - Tamara A. Bazhenova
- Institute of Problems of Chemical Physics of the Russian Academy of Sciences, Chernogolovka, Moscow region, 142432, Russian Federation, http://www.icp.ac.ru
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Marchetti F, Pampaloni G, Zacchini S. The reactivity of MoCl5 with molecules containing the alcohol functionality. Polyhedron 2015. [DOI: 10.1016/j.poly.2014.09.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Biancalana L, Bortoluzzi M, Forte C, Marchetti F, Pampaloni G. Structural characterization of α-amino acid complexes of molybdates: a spectroscopic and DFT study. RSC Adv 2015. [DOI: 10.1039/c4ra14236e] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A joint spectroscopic and computational study has allowed us to determine the dinuclear structural core of the products of the reactions between molybdates and α-amino acids in aqueous medium.
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Affiliation(s)
- Lorenzo Biancalana
- University of Pisa
- Dipartimento di Chimica e Chimica Industriale
- I-56124 Pisa
- Italy
| | - Marco Bortoluzzi
- Ca'Foscari University of Venice
- Dipartimento di Scienze Molecolari e Nanosistemi
- I-30123 Venezia
- Italy
| | - Claudia Forte
- Istituto di Chimica dei Composti OrganoMetallici
- CNR
- Area della Ricerca di Pisa
- I-56124 Pisa
- Italy
| | - Fabio Marchetti
- University of Pisa
- Dipartimento di Chimica e Chimica Industriale
- I-56124 Pisa
- Italy
| | - Guido Pampaloni
- University of Pisa
- Dipartimento di Chimica e Chimica Industriale
- I-56124 Pisa
- Italy
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Bortoluzzi M, Marchetti F, Pampaloni G, Zacchini S. Oxido-molybdenum complexes obtained by Cl/O interchange between MoCl5 and carboxylic acids: a crystallographic, spectroscopic and computational study. Dalton Trans 2014; 43:16416-23. [PMID: 25251728 DOI: 10.1039/c4dt02201g] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The direct interaction of MoCl5 with a series of carboxylic acids has been elucidated for the first time. The reactions proceed with release of hydrogen chloride and Cl/O interchange between the metal centre and one equivalent of organic substrate: this feature is unique in the context of the chemistry generally shown by transition metal halides with carboxylic acids. The dinuclear complexes [MoOCl2(κ(1)-CX3CO2H)(μ-Cl)]2 (X = H, 1a; X = Cl, 1b) and Mo2O2Cl6(μ-CH3CO2H), 2a, were isolated as the prevalent metal products of the 1:2 molar reactions of MoCl5 with CH3COOH and CCl3COOH. Evidence for the formation of Mo2O2Cl6(μ-CCl3CO2H), 2b, was achieved by allowing MoCl5 to react with CCl3COOH in 2:3 ratio. Instead the reactions of MoCl5 with a three-fold molar excess of RCOOH afforded the mononuclear complexes MoOCl3(κ(1)-RCO2H)2 (R = CH3, 3a; CCl3, 3b; CHCl2, 3c; CMe3, 3d) in 50–60% yields. The new compounds were characterized by analytical and spectroscopic techniques, moreover the X-ray molecular structures were ascertained for 1a, 1b and 2a; 1a and 1b display single Mo–Mo bond. DFT calculations were carried out in order to shed light into structural aspects.
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Affiliation(s)
- Marco Bortoluzzi
- University of Venezia Ca' Foscari, Dipartimento di Scienze Molecolari e Nanosistemi, Dorsoduro 2137, I-30123 Venezia, Italy
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Bazhenova TA, Lyssenko KA, Kuznetsov DA, Kovaleva NV, Manakin YV, Savinykh TA, Shestakov AF. Methanolysis of MoCl5 in the presence of different alkaline agents; molecular structures of the polynuclear molybdenum(V) methoxides and electron charge density distribution from X-ray diffraction study of the new K–Mo cluster. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.03.057] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Bortoluzzi M, Hayatifar M, Marchetti F, Pampaloni G, Zacchini S. Synthesis of di- and tetranuclear oxido-molybdenum(v) complexes containing p-toluenesulfonates as ligands: a joint spectroscopic, crystallographic and computational study. Dalton Trans 2014; 43:10157-63. [DOI: 10.1039/c4dt00796d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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