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Fritsch L, Rehsies P, Barakat W, Estes DP, Bauer M. Detection and Characterization of Hydride Ligands in Copper Complexes by Hard X-Ray Spectroscopy. Chemistry 2024; 30:e202400357. [PMID: 38651986 DOI: 10.1002/chem.202400357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 04/17/2024] [Accepted: 04/18/2024] [Indexed: 04/25/2024]
Abstract
Transition metal complexes, particularly copper hydrides, play an important role in various catalytic processes and molecular inorganic chemistry. This study employs synchrotron hard X-ray spectroscopy to gain insights into the geometric and electronic properties of copper hydrides as potential catalysts for CO2 hydrogenation. The potential of high energy resolution X-ray absorption near-edge structure (HERFD-XANES) and valence-to-core X-ray emission (VtC-XES) is demonstrated with measurement on Stryker's reagent (Cu6H6) and [Cu3(μ3-H)(dpmppe)2](PF6)2 (Cu3H), alongside a non-hydride copper compound ICu(dtbppOH) (Cuy-I). The XANES analysis reveals that coordination geometries strongly influence the spectra, providing only indirect details about hydride coordination. The VtC-XES analysis exhibits a distinct signal around 8975 eV, offering a diagnostic tool to identify hydride ligands. Theoretical calculations support and extend these findings by comparing hydride-containing complexes with their hydride-free counterparts.
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Affiliation(s)
- Lorena Fritsch
- Institute of Inorganic Chemistry and Center for Sustainable Systems Design (CSSD), Paderborn University, Warburger Straße 100, 33098, Paderborn, Germany
| | - Pia Rehsies
- Institute of Inorganic Chemistry and Center for Sustainable Systems Design (CSSD), Paderborn University, Warburger Straße 100, 33098, Paderborn, Germany
| | - Wael Barakat
- Instritute of Technical Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Deven P Estes
- Instritute of Technical Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Matthias Bauer
- Institute of Inorganic Chemistry and Center for Sustainable Systems Design (CSSD), Paderborn University, Warburger Straße 100, 33098, Paderborn, Germany
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Coetzee J, Eastham GR, Slawin AMZ, Cole-Hamilton DJ. Phosphorus containing mixed anhydrides—their preparation, labile behaviour and potential routes to their stabilisation. Org Biomol Chem 2012; 10:3677-88. [DOI: 10.1039/c2ob07164a] [Citation(s) in RCA: 6] [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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Hommer H, Cuevas G, Gordillo B. Kinetic Studies of the Thermal cis-to-trans Isomerization of Dioxaphospholanes. PHOSPHORUS SULFUR 2008. [DOI: 10.1080/10426500801963822] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Herbert Hommer
- a Departamento de Química , Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional , México, D.F., México
| | - Gabriel Cuevas
- b Instituto de Química, Circuito Exterior, Ciudad Universitaria, Universidad Nacional Autónoma de México , México
| | - Barbara Gordillo
- a Departamento de Química , Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional , México, D.F., México
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Enamullah M, Sharmin A, Hasegawa M, Hoshi T, Chamayou AC, Janiak C. Syntheses, Spectroscopic Studies, and Crystal Structures of Chiral [Rh(aminocarboxylato)(η4-cod)] and Chiral [Rh(amino alcohol)(η4-cod)](acetate) Complexes with an Example of a Spontaneous Resolution of a Racemic Mixture into Homochiral Helix-Enantiomers. Eur J Inorg Chem 2006. [DOI: 10.1002/ejic.200501033] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Shum SP, Pastor SD, DeBellis AD, Odorisio PA, Burke L, Clarke FH, Rihs G, Piatek B, Rodebaugh RK. Sterically congested tripodal phosphites: conformational analysis, solid-state polymorphism, metal complexation, and application to the asymmetric hydrosilation of ketones. Inorg Chem 2003; 42:5097-106. [PMID: 12924880 DOI: 10.1021/ic030099l] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The synthesis as well as isolation and crystallographic analysis of two solid-state polymorphs of the tripodal ligand tri[2,2',2' '-tris[(2,4,8,10-tetrakis(1,1-dimethylethyl)dibenzo[d,f][1,3,2]dioxaphosphepin-6-yl)oxy]ethyl]amine (3) is described. Form I crystallized from ethyl acetate in the space group P2(1)/n with the unit-cell parameters a = 20.070(10) A, b = 17.477(2) A, c = 27.620(3) A, and beta = 93.050(10) degrees, V = 9674.5(14) A(3), and Z = 4. Form II crystallized from a mixture of acetone and toluene in the space group P1 with the unit-cell parameters a = 12.493(1) A, b = 19.701(2) A, c = 21.027(2) A, alpha = 116.23(1) degrees, beta = 100.15(1) degrees, and gamma = 91.07(1) degrees, V = 4542 A(3), and Z = 2. Differences in the relative absolute stereochemistry of the stereoaxes in the seven-membered dibenzo[d,f][1,3,2]dioxaphosphepin ring are discussed. The synthesis and X-ray characterization of enantiomerically pure (S,S,S)-tri[2,2',2' '-tris[(2,4,8,10-tetrakis(1,1-dimethylethyl)dibenzo[d,f][1,3,2]dioxaphosphepin-6-yl)oxy]propyl]amine [(S,S,S)-7] are reported. Two crystallographically independent molecules exist in the unit cell that cannot be superimposed with each other by either a translation or a symmetry operation. The two solid-state conformers in the unit cell differed predominately by the absolute stereochemistry of the stereoaxes in the seven-membered dibenzo[d,f][1,3,2]dioxaphosphepin ring. The Rh(I)-catalyzed hydrosilation of acetophenone with the chiral ligands (R,R,S)-7 and (S,S,S)-7 showed significant differences in chiral induction. Chiral cooperativity between the stereoaxes and stereocenters in (S,S,S)-7 is observed. The mechanism of the communication between the stereocenters and stereoaxes leading to chiral cooperativity in the stereoselective transition state is suggested to be primarily steric in nature.
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Affiliation(s)
- Sai P Shum
- Ciba Specialty Chemicals Corporation, 540 White Plains Road, Tarrytown, New York 10591, USA.
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Durran SE, Elsegood MR, Hawkins N, Smith MB, Talib S. New functionalised ditertiary phosphines via phosphorus based Mannich condensation reactions. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(03)01273-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Müller G, Feustel A. Multidentate Phosphinoalkoxides: Synthesis, Deprotonation, and Building Blocks in Polylithium Mixed-Anion Aggregates. Organometallics 2003. [DOI: 10.1021/om030118z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gerhard Müller
- Fachbereich Chemie, Universität Konstanz, Universitätsstrasse 10, 78464 Konstanz, Germany
| | - Alexander Feustel
- Fachbereich Chemie, Universität Konstanz, Universitätsstrasse 10, 78464 Konstanz, Germany
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Durran SE, Smith MB, Slawin AMZ, Gelbrich T, Hursthouse MB, Light ME. Synthesis and coordination studies of new aminoalcohol functionalized tertiary phosphines. CAN J CHEM 2001. [DOI: 10.1139/v01-037] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The synthesis of two new aminoalcohol functionalized tertiary phosphines o-Ph2PCH2N(H)C6H4(OH) (I) and o-Ph2PCH2N(H)C6H4(CH2OH) (II) are reported. Oxidation with aqueous H2O2 gave the corresponding phosphine oxides o-Ph2P(O)CH2N(H)C6H4(OH) (III) and o-Ph2P(O)CH2N(H)C6H4(CH2OH) (IV) (31P NMR evidence only). The ligating ability of I, II and, in several cases, the known ligand 2,3-Ph2PCH2N(H)C5H3N(OH) (V), was investigated with a range of late transition-metal precursors. Accordingly, reaction of 2 equiv of I (or II) with [MCl2(cod)] (M = Pd or Pt, cod = cycloocta-1,5-diene) gave the corresponding dichloro metal(II) complexes [MCl2(I)2] (M = Pd 1; M = Pt 2) and [MCl2(II)2] (M = Pd 3; M = Pt 4) in which I (and II) P-coordinate. Solution NMR studies reveal that 2 and 4 are exclusively cis whereas 1 and 3 are present as a mixture of cis and (or) trans isomers [4.7:1 (for 1); 2.2:1 (for 3)]. Reaction of 2 equiv of II with [Pt(CH3)2(cod)] gave the neutral complex [Pt(CH3)2(II)2] (5) whose X-ray structure confirmed a cis disposition of "hybrid" ligands. In contrast, reaction of I with [Pt(CH3)2(cod)] gave initially [Pt(CH3)2(I)2] (6) which, upon standing, afforded several products possibly reflecting an increased acidity of the phenolic groups of ligated I. Chloro bridge cleavage reactions of [{Ru(µ-Cl)Cl(p-cymene)}2] or [{Rh(µ-Cl)Cl{C5(CH3)5}}2] with I (or II) proceeds smoothly and gave the mononuclear complexes [RuCl2(p-cymene)I] (7), [RuCl2(p-cymene)II] (8), [RhCl2{C5(CH3)5}I] (9), and [RhCl2{C5(CH3)5}II] (10) in good yield. X-ray crystallography confirms both ruthenium complexes bear P-coordinated I (or II) ligands. Molecules of 7 are linked into linear chains via O-H···Clcoord intermolecular hydrogen bonding, a feature absent in the closely related compound 8. Reaction of [AuCl(tht)] (tht = tetrahydrothiophene) with 1 equiv of I (or II) gave the corresponding gold(I) complexes [AuCl(I)] (11) and [AuCl(II)] (12). Bridge cleavage of the cyclometallated palladium(II) dimers [{Pd(µ-Cl)(C~N)}2] [C~N = C,N-C6H4CH2N(CH3)2, C,N-C10H6N(CH3)2, C,N-C6H4N=NC6H5] with V (or I) gave the neutral complexes [PdCl(C~N)V] (13-15) (or [PdCl(C9H12N)I] (16)), respectively. Chloride abstraction from 13 (or 15) with Ag[BF4] gave the cationic complexes [Pd(C~N)V][BF4] (17) (or 18) in which V P,N pyridyl-chelates to the palladium(II) metal centre. The X-ray structures of 13 and 18 have been determined and confirm the expected coordination environments. An array of intra- and intermolecular H-bonding contacts are also observed. All compounds have been characterized by a combination of spectroscopic and analytical studies.Key words: phosphines, crystal structures, alcohols, precious metals.
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Vogelgesang J, Frick A, Huttner G, Kircher P. Synthesis and Coordination Chemistry of Chelate Ligands Containing Cyclopentadienyl, Indenyl and Fluorenyl Donors − Diastereoselectivity and NMR Structure Analysis. Eur J Inorg Chem 2001. [DOI: 10.1002/1099-0682(200104)2001:4<949::aid-ejic949>3.0.co;2-#] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Joachim Vogelgesang
- Anorganisch‐Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany, Fax: (internat.) + 49‐(0)6221/545707
| | - Axel Frick
- Anorganisch‐Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany, Fax: (internat.) + 49‐(0)6221/545707
| | - Gottfried Huttner
- Anorganisch‐Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany, Fax: (internat.) + 49‐(0)6221/545707
| | - Peter Kircher
- Anorganisch‐Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany, Fax: (internat.) + 49‐(0)6221/545707
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Lee HM, Yang C, Jia G. Preparation and catalytic hydrogenation properties of some rhodium and ruthenium complexes with chiral tridentate phosphine ligands (S,S)-PhP(CH2CHMeCH2PPh2)2 and (S)-Ph2PCH2CH(PPh2)CH2CH2PPh2). J Organomet Chem 2000. [DOI: 10.1016/s0022-328x(00)00104-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Vogelgesang J, Huttner G, Kaifer E, Kircher P, Rutsch P, Cunskis S. Chiral Chelate Ligands Based on a Neopentane Framework; Introducing Indenyl and Fluorenyl Donor Groups. Eur J Inorg Chem 1999. [DOI: 10.1002/(sici)1099-0682(199912)1999:12<2187::aid-ejic2187>3.0.co;2-b] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Bakalarz A, Heliński J, Krawiecka B, Michalski J, Potrzebowski M. Convenient synthesis of propane aminophosphonic acids, aminodiphosphonic acids and their structural analogues, mediated by azetidinium salts. Tetrahedron 1999. [DOI: 10.1016/s0040-4020(99)00698-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Karas J, Huttner G, Heinze K, Rutsch P, Zsolnai L. Preparation of Enantiomerically Pure Chelate Ligands L2 = XCH2CH(OH)CH2Y from Epichlorohydrin – Conformation of Their L2Rh(COD)+ Derivatives and Enantioselective Hydrogenation by L2Rh(COD)+. Eur J Inorg Chem 1999. [DOI: 10.1002/(sici)1099-0682(199903)1999:3<405::aid-ejic405>3.0.co;2-t] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Soltek R, Huttner G. Thiolate and Thioether Functions as Donor Groups X, Y in Tripod Ligands RCH2C(CH2PPh2)(CH2X)(CH2Y) – Synthesis and Coordination Chemistry. Eur J Inorg Chem 1998. [DOI: 10.1002/(sici)1099-0682(199810)1998:10<1417::aid-ejic1417>3.0.co;2-h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Jacobi A, Huttner G, Winterhalter U, Cunskis S. Pyrazole as a Donor Function in Neopentane-Based Tripod Ligands RCH2C(CH2pyrazol-1-yl)3–n(CH2PR2)n – Synthesis and Coordination Chemistry. Eur J Inorg Chem 1998. [DOI: 10.1002/(sici)1099-0682(199806)1998:6<675::aid-ejic675>3.0.co;2-m] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Soltek R, Huttner G, Zsolnai L, Driess A. Tripod ligands of constitutional C1 symmetry containing a deliberate set of mixed P/S donor groups: synthesis and coordination chemistry. Inorganica Chim Acta 1998. [DOI: 10.1016/s0020-1693(97)05784-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Pastor SD, Shum SP. Novel sterically congested chiral tripodal phosphite ligands: catalytic asymmetric hydrosilylation of ketones with a Rh(I)–TRISPHOS catalyst. ACTA ACUST UNITED AC 1998. [DOI: 10.1016/s0957-4166(98)00018-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Antelmann B, Huttner G, Vogelgesang J, Walter O, Winterhalter U. Tripod-Liganden mit cyclopentadienyl-donorgruppe: Synthese und reaktivität von komplexen des typs CH3C(CH2-η5-C5H4)(CH2PR2)(CH2PR′2)FeCl. J Organomet Chem 1997. [DOI: 10.1016/s0022-328x(97)00502-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Scherer J, Huttner G, Heidel H. Rhodium—COD-Komplexe chiraler Tripod-Liganden mit drei verschiedenen Donorgruppen: Komplexchemie und Katalyse. J Organomet Chem 1997. [DOI: 10.1016/s0022-328x(96)06930-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Scherer J, Huttner G, Walter O, Janssen BC, Zsolnai L. Tripod-Rhodium-COD-Komplexe: Synthese, Struktur, Dynamik und Katalyse. ACTA ACUST UNITED AC 1996. [DOI: 10.1002/cber.19961291230] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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