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Zierkiewicz W, Wysokiński R, Michalczyk M, Scheiner S. Chalcogen bonding of two ligands to hypervalent YF 4 (Y = S, Se, Te, Po). Phys Chem Chem Phys 2019; 21:20829-20839. [PMID: 31517347 DOI: 10.1039/c9cp04006d] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The ability of two NH3 ligands to engage in simultaneous chalcogen bonds to a hypervalent YF4 molecule, with Y = S, Se, Te, Po, is assessed via quantum calculations. The complex can take on one of two different geometries. The cis structure places the two ligands adjacent to one another in a pseudo-octahedral geometry, held there by a pair of σ-hole chalcogen bonds. The bases can also lie nearly opposite one another, in a distorted octahedron containing one π-hole and one strained σ-hole bond. The cis geometry is favored for Y = S, while Te, and Po tend toward the trans structure; they are nearly equally stable for Se. In either case, the binding energy rises rapidly with the size of the Y atom, exceeding 30 kcal mol-1 for PoF4.
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Affiliation(s)
- Wiktor Zierkiewicz
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland.
| | - Rafał Wysokiński
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland.
| | - Mariusz Michalczyk
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland.
| | - Steve Scheiner
- Department of Chemistry and Biochemistry, Utah State University Logan, Utah 84322-0300, USA.
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Fustier-Boutignon M, Nebra N, Mézailles N. Geminal Dianions Stabilized by Main Group Elements. Chem Rev 2019; 119:8555-8700. [PMID: 31194516 DOI: 10.1021/acs.chemrev.8b00802] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
This review is dedicated to the chemistry of stable and isolable species that bear two lone pairs at the same C center, i.e., geminal dianions, stabilized by main group elements. Three cases can thus be considered: the geminal-dilithio derivative, for which the two substituents at C are neutral, the yldiide derivatives, for which one substituent is neutral while the other is charged, and finally the geminal bisylides, for which the two substituents are positively charged. In this review, the syntheses and electronic structures of the geminal dianions are presented, followed by the studies dedicated to their reactivity toward organic substrates and finally to their coordination chemistry and applications.
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Affiliation(s)
- Marie Fustier-Boutignon
- UPS, CNRS, LHFA UMR 5069 , Université de Toulouse , 118 Route de Narbonne , 31062 Toulouse , France
| | - Noel Nebra
- UPS, CNRS, LHFA UMR 5069 , Université de Toulouse , 118 Route de Narbonne , 31062 Toulouse , France
| | - Nicolas Mézailles
- UPS, CNRS, LHFA UMR 5069 , Université de Toulouse , 118 Route de Narbonne , 31062 Toulouse , France
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Mahmudov KT, Kopylovich MN, Guedes da Silva MFC, Pombeiro AJL. Chalcogen bonding in synthesis, catalysis and design of materials. Dalton Trans 2018; 46:10121-10138. [PMID: 28686248 DOI: 10.1039/c7dt01685a] [Citation(s) in RCA: 268] [Impact Index Per Article: 44.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Chalcogen bonding is a type of noncovalent interaction in which a covalently bonded chalcogen atom (O, S, Se or Te) acts as an electrophilic species towards a nucleophilic (negative) region(s) in another or in the same molecule. In general, this interaction is strengthened by the presence of an electron-withdrawing group on the electron-acceptor chalcogen atom and upon moving down in the periodic table of elements, from O to Te. Following a short discussion of the phenomenon of chalcogen bonding, this Perspective presents some demonstrative experimental observations in which this bonding is crucial for synthetic transformations, crystal engineering, catalysis and design of materials as synthons/tectons.
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Affiliation(s)
- Kamran T Mahmudov
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal. and Department of Chemistry, Baku State University, Z. Xalilov Str. 23, Az 1148 Baku, Azerbaijan and Organic Chemistry Department, RUDN University, 6 Miklukho-Maklaya str., Moscow 117198, Russian Federation
| | - Maximilian N Kopylovich
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
| | - M Fátima C Guedes da Silva
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
| | - Armando J L Pombeiro
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
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Chivers T, Thirumoorthi R. s-Block metal complexes of PC(H)P-bridged chalcogen-centred methanides: comparisons with isoelectronic PNP-bridged monoanions. Dalton Trans 2018; 47:12493-12505. [DOI: 10.1039/c7dt04791f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This Perspective compares the chemistries of s-block metal complexes of isoelectronic PC(H)P- and PNP-bridged, chalcogen-centred monoanions with a focus on the unique behavior of the C(H)-bridged systems.
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Affiliation(s)
- Tristram Chivers
- Department of Chemistry
- The University of Calgary
- Calgary
- Canada, T2N 1N4
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Thirumoorthi R, Chivers T, Häggman S, Mansikkamäki A, Morgan IS, Tuononen HM, Lahtinen M, Konu J. Synthesis of a labile sulfur-centred ligand, [S(H)C(PPh2S)2](-): structural diversity in lithium(i), zinc(ii) and nickel(ii) complexes. Dalton Trans 2016; 45:12691-701. [PMID: 27453403 DOI: 10.1039/c6dt02565j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A high-yield synthesis of [Li{S(H)C(PPh2S)2}]2 [Li2·(3)2] was developed and this reagent was used in metathesis with ZnCl2 and NiCl2 to produce homoleptic complexes 4 and 5b in 85 and 93% yields, respectively. The solid-state structure of the octahedral complex [Zn{S(H)C(PPh2S)2}2] (4) reveals notable inequivalence between the Zn-S(C) and Zn-S(P) contacts (2.274(1) Å vs. 2.842(1) and 2.884(1) Å, respectively). Two structural isomers of the homoleptic complex [Ni{S(H)C(PPh2S)2}2] were isolated after prolonged crystallization processes. The octahedral green Ni(ii) isomer 5a exhibits the two monoprotonated ligands bonded in a tridentate (S,S',S'') mode to the Ni(ii) centre with three distinctly different Ni-S bond lengths (2.3487(8), 2.4500(9) and 2.5953(10) Å). By contrast, in the red-brown square-planar complex 5b the two ligands are S,S'-chelated to Ni(ii) (d(Ni-S) = 2.165(2) and 2.195(2) Å) with one pendant PPh2S group. DFT calculations revealed that the energetic difference between singlet and triplet state octahedral and square-planar isomers of the Ni(ii) complex is essentially indistinguishable. Consistently, VT and (31)P CP/MAS NMR spectroscopic investigations indicated that a mixture of isomers exists in solution at room temperature, while the singlet state square-planar isomer 5b becomes favoured at -40 °C.
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Affiliation(s)
| | - Tristram Chivers
- Department of Chemistry, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Susanna Häggman
- Department of Chemistry, University of Jyväskylä, P.O. Box 35, Jyväskylä, FI-40014, Finland.
| | - Akseli Mansikkamäki
- Department of Chemistry, University of Jyväskylä, P.O. Box 35, Jyväskylä, FI-40014, Finland.
| | - Ian S Morgan
- Department of Chemistry, University of Jyväskylä, P.O. Box 35, Jyväskylä, FI-40014, Finland.
| | - Heikki M Tuononen
- Department of Chemistry, University of Jyväskylä, P.O. Box 35, Jyväskylä, FI-40014, Finland.
| | - Manu Lahtinen
- Department of Chemistry, University of Jyväskylä, P.O. Box 35, Jyväskylä, FI-40014, Finland.
| | - Jari Konu
- Department of Chemistry, University of Jyväskylä, P.O. Box 35, Jyväskylä, FI-40014, Finland.
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Leung W, Chan Y, Choi T, Lee H. Synthesis and Structural Characterization of Mono‐ and Bimetallic Rhodium(I), Iridium(I) and Gold(I) Methanide and Methandiide Complexes from 2‐Quinolyl‐Linked (Thiophosphoranyl)methane. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600328] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Wing‐Por Leung
- School of Science and Engineering The Chinese University of Hong Kong Shenzhen P. R. China
| | - Yuk‐Chi Chan
- Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637731 Singapore
- Department of Chemistry The Chinese University of Hong Kong Shatin, New Territories Hong Kong P. R. China
| | - Tsz‐Hei Choi
- Department of Chemistry The Chinese University of Hong Kong Shatin, New Territories Hong Kong P. R. China
| | - Hung‐Kay Lee
- Department of Chemistry The Chinese University of Hong Kong Shatin, New Territories Hong Kong P. R. China
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Yadav S, Manjare ST, Singh HB, Butcher RJ. Transition metal mediated formation of dicationic diselenides stabilised by N-heterocyclic carbenes: designed synthesis. Dalton Trans 2016; 45:12015-27. [DOI: 10.1039/c6dt01425a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Designed syntheses of dicationic diselenides have been developed by (i) reduction of dihaloselones (routes A and B) and (ii) by oxidation of selone adducts of metal halides (route C).
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Affiliation(s)
- Sangeeta Yadav
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Sudesh T. Manjare
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
- Department of Chemistry
| | - Harkesh B. Singh
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
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Yang YX, Li Y, Ganguly R, So CW. Instability of metal 1,3-benzodi(thiophosphinoyl)methandiide complexes: formation of hafnium, tin and zirconium complexes of 1,3-benzodi(thiophosphinoyl)thioketone dianionic ligand [1,3-C 6H 4(PhPS) 2CS] 2−. Dalton Trans 2015; 44:12633-9. [DOI: 10.1039/c5dt01212k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The reaction illustrates that the metal centre and ligand substituents are crucial for the stabilization of a CmethandiideHf bond.
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Affiliation(s)
- Ya-Xiu Yang
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- 637371 Singapore
- Singapore
| | - Yongxin Li
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- 637371 Singapore
- Singapore
| | - Rakesh Ganguly
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- 637371 Singapore
- Singapore
| | - Cheuk-Wai So
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- 637371 Singapore
- Singapore
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Stable Geminal Dianions as Precursors for Gem-Diorganometallic and Carbene Complexes. TOP ORGANOMETAL CHEM 2014. [DOI: 10.1007/3418_2014_74] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Thirumoorthi R, Chivers T, Laitinen RS. 1,1'-(Diselanediylbis{[P,P-diphenyl-N-(tri-methyl-sil-yl)phospho-rimido-yl]methanylyl-idene})bis-[1,1-diphenyl-N-(tri-methyl-sil-yl)-λ(5)-phosphanamine] pentane disolvate. Acta Crystallogr Sect E Struct Rep Online 2014; 70:o20-1. [PMID: 24526971 PMCID: PMC3914070 DOI: 10.1107/s1600536813032674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Accepted: 12/02/2013] [Indexed: 11/10/2022]
Abstract
The title compound, C62H78N4P4Se2Si4·2C5H12, is made up of two [SeC(PPh2NSiMe3)(PPh2NHSiMe3)] units related by an inversion center situated at the mid-point of the diselenide bond. It crystallized with two disordered mol-ecules of pentane used as solvent of crystallization. It is a rare example of an anti-periplanar diselenide and exhibits a long Se-Se bond of 2.4717 (8) Å. The Se-C bond length of 1.876 (5) Å is short in comparison with the range of values found for other diselenides (1.91-1.97 Å). The mol-ecule exhibits two intra-molecular N-H⋯N hydrogen bonds. In the crystal, there are no significant inter-molecular inter-actions present. One of the Me3Si- groups is disordered over two positions with a refined occupancy ratio of 0.708 (8):0.292 (8). The contribution of the disordered solvent to the scattering was removed with the SQUEEZE option of PLATON [Spek (2009 ▶). Acta Cryst. D65, 148-155]. The solvent contribution has been included in the reported mol-ecular weight and density.
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Affiliation(s)
- Ramalingam Thirumoorthi
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Tristram Chivers
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Risto S Laitinen
- Department of Chemistry, PO Box 3000, University of Oulu, 90014 Oulu, Finland
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Thirumoorthi R, Chivers T. Octahedral Tin(IV) Complexes of the Chalcogen-Centered Ligands [EC(PPh2S)2]2-(E= S, Se). Z Anorg Allg Chem 2013. [DOI: 10.1002/zaac.201300505] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Mancini A, Aragoni MC, Bingham AL, Castellano C, Coles née Huth SL, Demartin F, Hursthouse MB, Isaia F, Lippolis V, Maninchedda G, Pintus A, Arca M. Reactivity of Fluoro-Substituted Bis(thiocarbonyl) Donors with Diiodine: An XRD, FT-Raman, and DFT Investigation. Chem Asian J 2013; 8:3071-8. [DOI: 10.1002/asia.201300693] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Indexed: 11/11/2022]
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Thirumoorthi R, Chivers T. Structure of the telluroketone TeC(PPh2NSiMe3)2 coordinated to an Li8O6 cluster. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.02.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Mancini A, Aragoni MC, Bricklebank N, Castellano C, Demartin F, Isaia F, Lippolis V, Pintus A, Arca M. Formation of T-Shaped versus Charge-Transfer Molecular Adducts in the Reactions Between Bis(thiocarbonyl) Donors and Br2and I2. Chem Asian J 2012; 8:639-47. [DOI: 10.1002/asia.201201043] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2012] [Revised: 11/19/2012] [Indexed: 11/06/2022]
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Thirumoorthi R, Chivers T, Vargas-Baca I. Experimental and Theoretical Investigations of Tellurium(IV) Methanediides and Their Insertion Products with Sulfur and Iodine. Organometallics 2012. [DOI: 10.1021/om200925k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ramalingam Thirumoorthi
- Department
of Chemistry, University of Calgary, 2500
University Drive N.W., Calgary, AB, Canada, T2N 1N4, and Department
of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada, L8S 4M1
| | - Tristram Chivers
- Department
of Chemistry, University of Calgary, 2500
University Drive N.W., Calgary, AB, Canada, T2N 1N4, and Department
of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada, L8S 4M1
| | - Ignacio Vargas-Baca
- Department
of Chemistry, University of Calgary, 2500
University Drive N.W., Calgary, AB, Canada, T2N 1N4, and Department
of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada, L8S 4M1
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Chivers T, Konu J, Thirumoorthi R. PCP-bridged chalcogen-centred anions: coordination chemistry and carbon-based reactivity. Dalton Trans 2012; 41:4283-95. [DOI: 10.1039/c2dt12361d] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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17
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Konu J, Chivers T, Tuononen HM. Bond Stretching and Redox Behavior in Coinage Metal Complexes of the Dichalcogenide Dianions [(SPh2P)2CEEC(PPh2S)2]2− (E=S, Se): Diradical Character of the Dinuclear Copper(I) Complex (E=S). Chemistry 2011; 17:11844-56. [DOI: 10.1002/chem.201100891] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2011] [Indexed: 11/11/2022]
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Risto M, Chivers T, Konu J. Homoleptic, heteroleptic and mixed-valent thallium and indium complexes of multidentate chalcogen-centred PCP-bridged ligands. Dalton Trans 2011; 40:8238-46. [PMID: 21717021 DOI: 10.1039/c1dt10646e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The metathetical reaction of [Li(TMEDA)][HC(PPh(2)Se)(2)] ([Li(TMEDA)]1) with TlOEt in a 1:1 molar ratio afforded a homoleptic Tl(I) complex as an adduct with LiOEt, Tl[HC(PPh(2)Se)(2)]·LiOEt (7), which undergoes selenium-proton exchange upon mild heating (60 °C) to give the mixed-valent Tl(I)/Tl(III) complex {[Tl][Tl{(Se)C(PPh(2)Se)(2)}(2)]}(∞) (8). Treatment of TlOEt with [Li(TMEDA)](2)[(SPh(2)P)(2)CE'E'C(PPh(2)S)(2)] (3b, E' = S; 3c, E' = Se) in a 2:1 molar ratio produced the binuclear Tl(i)/Tl(i) complexes Tl(2)[(SPh(2)P)(2)CE'E'C(PPh(2)S)(2)] (9b, E' = S; 9c, E' = Se), respectively. Selenium-proton exchange also occurred upon addition of [Li(TMEDA)]1 to InCl(3) to yield the heteroleptic complex (TMEDA)InCl[(Se)C(PPh(2)Se)(2)] (10a). Other examples of this class of In(III) complex, (TMEDA)InCl[(E')C(PPh(2)E)(2)] (10b, E = E' = S; 10c, E = S, E' = Se) were obtained via metathesis of InCl(3) with [Li(TMEDA)](2)[(E')C(PPh(2)E)(2)] (2b, E = E' = S; 2c, E = S, E' = Se, respectively). All new compounds have been characterized in solution by (1)H and (31)P NMR spectroscopy and the solid-state structures have been determined for 8, 9c and 10a-c by single-crystal X-ray crystallography. Complex 8 is comprised of Tl(+) ions that are weakly coordinated to octahedral [Tl{(Se)C(PPh(2)Se)(2)}(2)](-) anions to give a one-dimensional polymer. The complex 9c is comprised of two four-coordinate Tl(+) ions that are each S,S',S'',Se bonded to the hexadentate [(SPh(2)P)(2)CSeSeC(PPh(2)S)(2)](2-) ligand in which d(Se-Se) = 2.531(2) Å. The six-coordinate In(III) centres in the distorted octahedral complexes 10a-c are connected to a tridentate [(E')C(PPh(2)E)(2)](2-) dianion, a chloride ion and a neutral bidentate TMEDA ligand.
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Affiliation(s)
- Maarit Risto
- Department of Chemistry, University of Calgary, Calgary, Alberta, Canada T2N 1N4
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Risto M, Konu J, Chivers T. Identification of a novel η2-Se2 bonding mode in Cu(I) complexes of the dimeric selenocarbonyl dianions, [(EPh2P)2CSeSeC(PPh2E)2](2-) (E = S, Se). Inorg Chem 2011; 50:406-8. [PMID: 21141885 DOI: 10.1021/ic101866v] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A metathetical reaction between [Li(TMEDA)][(H)C(PPh2Se)2] and CuCl2 in a 2:1 molar ratio afforded the dimeric Cu(I) complex, {Cu2-η(2):η(2)-[(EPh2P)2CSeSeC(PPh2E)2]} (E = Se), via a selenium-proton exchange and an internal redox process. The analogous sulfur-containing complex (E = S) was obtained by the reactions of the dianions [(Se)C(PPh2S)2](2-) and [(SPh2P)2CSeSeC(PPh2S)2](2-) with Cu(II) and Cu(I) halides, respectively. Structural characterization of the Cu(I) complexes reveals a unique η(2)-Se2 bonding mode for the generic diselenide ligand system RSe-SeR.
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Affiliation(s)
- Maarit Risto
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, AB T2N 1N4, Canada
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