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Xu YH, Tian WJ, Sun JY, Scheer M, Sun ZM. Extension and Fusion of Cyclic Polyantimony Units. J Am Chem Soc 2024; 146:15473-15478. [PMID: 38782032 DOI: 10.1021/jacs.4c03843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
The synthesis and characterization of a series of polyantimony anionic clusters are reported. The products [(NbCp)2Sb10]2-, [MSb13]3- (M = Ru/Fe), and [MSb15]3- (M = Ru/Fe) were isolated as either K(18-crown-6) or K([2.2.2]-crypt) salts. The Sb10 ring contained in the [(NbCp)2Sb10]2- cluster can be viewed as an extension of two envelope-like cyclo-Sb5 units and represents by far the largest monocyclic all-antimony species. The clusters [MSb13]3- and [MSb15]3- (M = Ru/Fe) illustrate the variability of crown-like Sb8 ring motifs and reveal the fusion of different antimony fragments featuring unique Sb-Sb chain-like units. The reported synthetic approaches involve the fabrication of a variety of distinctive polyantimony anionic clusters, enhancing our understanding of the coordination chemistry of heavier group 15 elements.
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Affiliation(s)
- Yu-He Xu
- State Key Laboratory of Elemento-Organic Chemistry, Tianjin Key Lab for Rare Earth Materials and Applications, School of Materials Science and Engineering, Nankai University, Tianjin 300350, China
| | - Wen-Juan Tian
- Institute of Molecular Science, Shanxi University, Taiyuan 030006, China
| | - Jing-Ying Sun
- State Key Laboratory of Elemento-Organic Chemistry, Tianjin Key Lab for Rare Earth Materials and Applications, School of Materials Science and Engineering, Nankai University, Tianjin 300350, China
| | - Manfred Scheer
- Institute of Inorganic Chemistry, University of Regensburg, Regensburg 93040, Germany
| | - Zhong-Ming Sun
- State Key Laboratory of Elemento-Organic Chemistry, Tianjin Key Lab for Rare Earth Materials and Applications, School of Materials Science and Engineering, Nankai University, Tianjin 300350, China
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2
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Qiao L, Yang T, Frenking G, Sun ZM. [Ga@Bi 10(NbMes) 2] 3-: a linear Nb-Ga I-Nb filament coordinated by a bismuth cage. Chem Commun (Camb) 2023; 59:4024-4027. [PMID: 36920786 DOI: 10.1039/d3cc00631j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2023]
Abstract
In this work, we report a low-valent Ga(I) complex, [Ga@Bi10(NbMes)2]3-, with a linear Nb-Ga-Nb fragment, representing the first compound with Nb-Ga and Nb-Bi bonds. Quantum-chemical calculations reveal that the complex is an electron-precise cluster. The possible fragmentation pathway of the title cluster was studied by using electrospray ionization mass spectrometry and theoretical calculations.
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Affiliation(s)
- Lei Qiao
- State Key Laboratory of Element-Organic Chemistry, Tianjin Key Lab for Institution Rare Earth Materials and Applications, School of Materials Science and Engineering, Nankai University, Tianjin 300350, Tianjin, China.
| | - Tao Yang
- MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China.
| | - Gernot Frenking
- Donostia International Physics Center (DIPC), P.K. 1072, Donostia 20080, Euskadi, Spain.,Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, Marburg 35043, Germany
| | - Zhong-Ming Sun
- State Key Laboratory of Element-Organic Chemistry, Tianjin Key Lab for Institution Rare Earth Materials and Applications, School of Materials Science and Engineering, Nankai University, Tianjin 300350, Tianjin, China.
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3
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Abstract
The occurrence of aromaticity in organic molecules is widely accepted, but its occurrence in purely metallic systems is less widespread. Molecules comprising only metal atoms (M) are known to be able to exhibit aromatic behaviour, sustaining ring currents inside an external magnetic field along M-M connection axes (σ-aromaticity) or above and below the plane (π-aromaticity) for cyclic or cage-type compounds. However, all-metal compounds provide an extension of the electrons' mobility also in other directions. Here, we show that regular {Bi6} prisms exhibit a non-localizable molecular orbital of f-type symmetry and generate a strong ring current that leads to a behaviour referred to as φ-aromaticity. The experimentally observed heterometallic cluster [{CpRu}3Bi6]-, based on a regular prismatic {Bi6} unit, displays aromatic behaviour; according to quantum chemical calculations, the corresponding hypothetical Bi62- prism shows a similar behaviour. By contrast, [{(cod)Ir}3Bi6] features a distorted Bi6 moiety that inhibits φ-aromaticity.
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4
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Heinl V, Balázs G, Seidl M, Scheer M. Synthesis of polyantimony ligand complexes starting from Cp* 4Sb 4. Chem Commun (Camb) 2022; 58:2484-2487. [PMID: 35083995 DOI: 10.1039/d1cc06770b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reactivity of Cp*4Sb4 (1) towards ionic compounds and transition metal complexes with labile ligands was investigated in order to synthesize polyantimony ligand complexes. The silver salts [Ag][X] and the metalate Na[Cp*Mo(CO)3] were primarily used, leading in the raction with Cp*4Sb4 to the formation of [Cp*2Sb][X] (X = TEF (2a), FAL (2b)), [(Cp*Mo(CO)3)3(μ3-Sb3)] (3) and [Cp*Mo(CO)2(η3-Sb3)] (4), respectively. The reaction of 1 with the transition metal complexes [(Cp'''M)2(tol)] leads to a degradation of the original Sb4 unit and to the formation of [(Cp'''M)4(μ3-Sb)4] (M = Ni (5); Co (6)). Towards [CpRFe(CO)2]2, substitutions on the antimony atoms were observed to give [{CpRFe(CO)2}4(μ4-Sb4)] (CpR = Cp'' (7a), Cp''' (7b)). All complexes were characterized by XRD and spectroscopic methods.
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Affiliation(s)
- Veronika Heinl
- Institute for Ionorganic Chemistry, University or Regensburg, 93053 Regensburg, Germany.
| | - Gábor Balázs
- Institute for Ionorganic Chemistry, University or Regensburg, 93053 Regensburg, Germany.
| | - Michael Seidl
- Institute for Ionorganic Chemistry, University or Regensburg, 93053 Regensburg, Germany.
| | - Manfred Scheer
- Institute for Ionorganic Chemistry, University or Regensburg, 93053 Regensburg, Germany.
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5
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Münzfeld L, Hauser A, Hädinger P, Weigend F, Roesky PW. The Archetypal Homoleptic Lanthanide Quadruple-Decker-Synthesis, Mechanistic Studies, and Quantum Chemical Investigations. Angew Chem Int Ed Engl 2021; 60:24493-24499. [PMID: 34486795 PMCID: PMC8596981 DOI: 10.1002/anie.202111227] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Indexed: 12/26/2022]
Abstract
Reduction of [SmIII (COT1,4-SiiPr3 )(BH4 )(thf)] (COT1,4-SiiPr3 =1,4-(i Pr3 Si)3 C8 H6 ) with KC8 resulted in [SmIII/II/III (COT1,4-SiiPr3 )4 ], the first example of a homoleptic lanthanide quadruple-decker. As indicated by an analysis of the bond metrics in the solid-state, the inner Sm ion is present in the divalent oxidation state, while the outer ones are trivalent. This observation could be confirmed by quantum chemical calculations. Mechanistic studies revealed not only insight into possible formation pathways of [SmIII/II/III (COT1,4-SiiPr3 )4 ] but also resulted in the transformation to other mixed metal sandwich complexes with unique structural properties. These are the 1D-polymeric chain structured [KSmIII (COT1,4-SiiPr3 )]n and the hexametallic species [(tol)K(COT1,4-SiiPr3 )SmII (COT1,4-SiiPr3 )K]2 which were initially envisioned as possible building blocks as part of different retrosynthetically guided pathways that we developed.
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Affiliation(s)
- Luca Münzfeld
- Institute of Inorganic ChemistryKarlsruhe Institute of TechnologyEngesserstrasse 1576131KarlsruheGermany
| | - Adrian Hauser
- Institute of Inorganic ChemistryKarlsruhe Institute of TechnologyEngesserstrasse 1576131KarlsruheGermany
| | - Pauline Hädinger
- Institute of Inorganic ChemistryKarlsruhe Institute of TechnologyEngesserstrasse 1576131KarlsruheGermany
| | - Florian Weigend
- Fachbereich ChemiePhilipps-Universität MarburgHans-Meerwein-Strasse 435032MarburgGermany
| | - Peter W. Roesky
- Institute of Inorganic ChemistryKarlsruhe Institute of TechnologyEngesserstrasse 1576131KarlsruheGermany
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6
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Münzfeld L, Hauser A, Hädinger P, Weigend F, Roesky PW. The Archetypal Homoleptic Lanthanide Quadruple‐Decker—Synthesis, Mechanistic Studies, and Quantum Chemical Investigations. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202111227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Luca Münzfeld
- Institute of Inorganic Chemistry Karlsruhe Institute of Technology Engesserstrasse 15 76131 Karlsruhe Germany
| | - Adrian Hauser
- Institute of Inorganic Chemistry Karlsruhe Institute of Technology Engesserstrasse 15 76131 Karlsruhe Germany
| | - Pauline Hädinger
- Institute of Inorganic Chemistry Karlsruhe Institute of Technology Engesserstrasse 15 76131 Karlsruhe Germany
| | - Florian Weigend
- Fachbereich Chemie Philipps-Universität Marburg Hans-Meerwein-Strasse 4 35032 Marburg Germany
| | - Peter W. Roesky
- Institute of Inorganic Chemistry Karlsruhe Institute of Technology Engesserstrasse 15 76131 Karlsruhe Germany
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7
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Heinl V, Seitz AE, Balázs G, Seidl M, Scheer M. Transfer of polyantimony units. Chem Sci 2021; 12:9726-9732. [PMID: 34349944 PMCID: PMC8293801 DOI: 10.1039/d1sc02498a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 06/16/2021] [Indexed: 12/04/2022] Open
Abstract
Transfer reagents are useful tools in chemistry to access metastable compounds. The reaction of [Cp′′2ZrCl2] with KSb(SiMe3)2 leads to the formation of the novel polyantimony triple decker complex [(Cp′′Zr)2(μ,η1:1:1:1:1:1-Sb6)] (1, Cp′′ = 1,3-di-tertbutyl-cyclopentadienyl), containing a chair-like Sb66− ligand. Compound 1 represents a valuable transfer reagent to form novel antimony ligand complexes. Thus, the reaction of 1 with CpR-substituted transition metal halides of nickel, cobalt and iron leads to the formation of a variety of novel Sbn ligand complexes, such as the cubane-like compounds [(Cp′′′Ni)4(μ3-Sb)4] (2) and [(Cp′′′Co)4(μ3-Sb4)] (3a) or the complexes [(CpBnCo)3(μ3-Sb)2] (4) and [(Cp′′′Fe)3(μ3-Sb)2] (5), representing a trigonal bipyramidal structure. Moreover, beside the transfer of Sb1 units, also the complete entity can be transferred as seen in the iron complex [(Cp′′′Fe)3(μ3,η4:4:4-Sb6)] (6). DFT calculations shed light on the bonding situation of the products. The synthesis and characterization of the unique polyantimony complex [(Cp′′Zr)2(μ,η1:1:1:1:1:1-Sb6)] (1) is described. Compound 1 was used as antimony source to transfer Sbn units to late transition metal fragments [CpRM] (M = Fe, Co, Ni).![]()
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Affiliation(s)
- Veronika Heinl
- Institut für Anorganische Chemie, Universität Regensburg 93040 Regensburg Germany https://www.uni-regensburg.de/chemie-pharmazie/anorganische-chemie-scheer/
| | - Andreas E Seitz
- Institut für Anorganische Chemie, Universität Regensburg 93040 Regensburg Germany https://www.uni-regensburg.de/chemie-pharmazie/anorganische-chemie-scheer/
| | - Gábor Balázs
- Institut für Anorganische Chemie, Universität Regensburg 93040 Regensburg Germany https://www.uni-regensburg.de/chemie-pharmazie/anorganische-chemie-scheer/
| | - Michael Seidl
- Institut für Anorganische Chemie, Universität Regensburg 93040 Regensburg Germany https://www.uni-regensburg.de/chemie-pharmazie/anorganische-chemie-scheer/
| | - Manfred Scheer
- Institut für Anorganische Chemie, Universität Regensburg 93040 Regensburg Germany https://www.uni-regensburg.de/chemie-pharmazie/anorganische-chemie-scheer/
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8
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9
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Liu C, Popov IA, Chen Z, Boldyrev AI, Sun Z. Aromaticity and Antiaromaticity in Zintl Clusters. Chemistry 2018; 24:14583-14597. [DOI: 10.1002/chem.201801715] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Revised: 05/18/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Chao Liu
- School of Materials Science and Engineering Rare Earth and Inorganic Functional Materials Center Nankai University Tianjin 300350 P. R. China
- China State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun Jilin 130022 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Ivan A. Popov
- Theoretical Division Los Alamos National Laboratory Los Alamos NM 87545 USA
| | - Zhongfang Chen
- Department of Chemistry Institute for Functional Nanomaterials University of Puerto Rico San Juan USA
| | - Alexander I. Boldyrev
- Department of Chemistry and Biochemistry Utah State University 0300 Old Main Hill Logan UT 84322-0300 USA
| | - Zhong‐Ming Sun
- School of Materials Science and Engineering Rare Earth and Inorganic Functional Materials Center Nankai University Tianjin 300350 P. R. China
- China State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun Jilin 130022 P. R. China
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10
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Binary and Ternary Intermetalloid Clusters. CLUSTERS – CONTEMPORARY INSIGHT IN STRUCTURE AND BONDING 2016. [DOI: 10.1007/430_2015_5002] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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11
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Mercero JM, Boldyrev AI, Merino G, Ugalde JM. Recent developments and future prospects of all-metal aromatic compounds. Chem Soc Rev 2015; 44:6519-34. [PMID: 26058731 DOI: 10.1039/c5cs00341e] [Citation(s) in RCA: 104] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The usefulness of aromaticity/antiaromaticity concepts to foresee structural stability patterns and salient features of the electronic structure of small inorganic and all-metal rings has been put forward. A critical revision of the advances made in the theoretical methods to assess the aromaticity/antiaromaticity of these compounds has also been made. In particular, the performance of local versus non-local indices has been reviewed. Finally, the passivation of these rings has been put forward as a key issue in order to prevent them from collapsing into larger aggregates and to provide them protection against the environment.
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Affiliation(s)
- Jose M Mercero
- IZO-SGI SGiker, Euskal Herriko Unibertsitatea (UPV/EHU), P.K. 1072, 20080 Donostia, Euskadi, Spain
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12
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Maslowsky E. Inorganic metallocenes: The structures and aromaticity of sandwich compounds of the transition elements with inorganic rings. Coord Chem Rev 2011. [DOI: 10.1016/j.ccr.2011.04.011] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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13
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Li T, Wiecko J, Pushkarevsky NA, Gamer MT, Köppe R, Konchenko SN, Scheer M, Roesky PW. Mixed-metal lanthanide-iron triple-decker complexes with a cyclo-P5 building block. Angew Chem Int Ed Engl 2011; 50:9491-5. [PMID: 21882304 DOI: 10.1002/anie.201102748] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2011] [Revised: 06/06/2011] [Indexed: 11/10/2022]
Affiliation(s)
- Tianshu Li
- Institut für Anorganische Chemie, Karlsruher Institut für Technologie (KIT), 76131 Karlsruhe, Germany
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14
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Li T, Wiecko J, Pushkarevsky NA, Gamer MT, Köppe R, Konchenko SN, Scheer M, Roesky PW. Gemischte Lanthanoid-Eisen-Tripeldeckerkomplexe mit einem cyclo-P5-Baustein. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201102748] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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15
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Scharfe S, Kraus F, Stegmaier S, Schier A, Fässler TF. Zintl-Ionen, Käfigverbindungen und intermetalloide Cluster der Elemente der 14. und 15. Gruppe. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201001630] [Citation(s) in RCA: 168] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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16
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Scharfe S, Kraus F, Stegmaier S, Schier A, Fässler TF. Zintl Ions, Cage Compounds, and Intermetalloid Clusters of Group 14 and Group 15 Elements. Angew Chem Int Ed Engl 2011; 50:3630-70. [PMID: 21455921 DOI: 10.1002/anie.201001630] [Citation(s) in RCA: 364] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2010] [Indexed: 11/10/2022]
Affiliation(s)
- Sandra Scharfe
- Department of Chemistry, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching/München, Germany
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18
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Relationships Between Soluble Zintl Anions, Ligand-Stabilized Cage Compounds, and Intermetalloid Clusters of Tetrel (Si–Pb) and Pentel (P–Bi) Elements. ZINTL IONS 2011. [DOI: 10.1007/430_2010_33] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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19
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Ly HV, Forster TD, Corrente AM, Eisler DJ, Konu J, Parvez M, Roesler R. Alkali-Metal Sandwich Complexes of a 1,2-Diaza-3,5-diborolyl Ligand Featuring η1, η2, η3, and η4 Coordination Modes. Organometallics 2007. [DOI: 10.1021/om061091x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hanh V. Ly
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Taryn D. Forster
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Andrea M. Corrente
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Dana J. Eisler
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Jari Konu
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Masood Parvez
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Roland Roesler
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
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20
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Rani DU, Prasad DLVK, Nixon JF, Jemmis ED. Electronic structure and bonding studies on triple-decker sandwich complexes with a P6middle ring. J Comput Chem 2007; 28:310-9. [PMID: 17103397 DOI: 10.1002/jcc.20521] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
DFT and hybrid HF-DFT studies of structure and bonding of CpMP6MCp triple-decker sandwich complexes, ranging from 18-28 valence electrons (VE) with M=Sc, Y, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, and W, show that the middle P6 ring complexes adopt symmetric planar (28 valence electron count [VEC]), asymmetric planar (26 VEC), and puckered (24 VEC) geometries. According to the mno Rule, 50 skeletal electrons are needed for these triple-decker cluster frameworks. For 28 VEC, this corresponds to 10 electrons more than the 50 electrons of the mno Rule if all VE of the metal are included. These additional electrons control the distortion of a P6 middle ring and other finer structural details. Completely filled 2a* and 2b* orbitals in 28 VE complexes lead to a planar symmetrical P6 middle ring, while the occupancy in either 2a* or 2b* alone explains the in-plane distortions (asymmetric) in 26 VE complexes. In comparison with 28 VE complexes, the puckering of P6 middle ring in 24 VE complexes is due to the greater stabilization of 5a and the extra stabilization of the +4 oxidation state of Ti. The quintet state of 22 VE complexes is planar as 2a* and 2b* are half filled. Similar geometrical and bonding patterns of CpScP6ScCp and C2P3H2ScC3P3H3ScC2P3H2 support the carbon-phosphorus analogy further. The 18 VE systems, CpScC3B3H6ScCp+ and CpScP3B3H3ScCp+, have the 50 skeletal electrons as stipulated by the mno Rule. Corresponding anions have 52 skeletal electrons (20 VE); the middle rings here are distorted in the plane.
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Affiliation(s)
- Dandamudi Usha Rani
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
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21
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Ly HV, Parvez M, Roesler R. An Unusual Ligand in Copper Chemistry: Coordination Oligomers and Polymers Containing the [{CpMo(CO)2}2(μ,η2-Sb2)] Cluster. Inorg Chem 2005; 45:345-51. [PMID: 16390075 DOI: 10.1021/ic051406l] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The coordination behavior of [[CpMo(CO)(2)}(2)(mu,eta(2)-Sb(2))] (1; Cp = cyclopentadiene) toward Cu(I) was investigated. Its reaction with CuX (X = Br, Cl, and I) produced oligomers or polymers of the general formula [[CpMo(CO)(2)](2)(mu,eta(2)-Sb(2))(mu-CuX)](n). While 2 (X = Cl, n = 2) and 3 (X = Br, n = 2) proved to be halogen-bridged dimers in both solution and solid state, the molecules of 4 (X = I, n = infinity) self-assembled in the crystal forming a linear polymer with a Cu-I skeleton supported by Sb-Cu bonds. The reaction of 1 with Cu[GaCl(4)] resulted in the formation of the ionic complex [[CpMo(CO)(2)](2)(mu,eta(2)-Sb(2))](4)Cu(2)[GaCl(4)](2) (5). Its dication contains four [[CpMo(CO)(2)](2)(mu,eta(2)-Sb(2))] ligands arranged around a Cu-Cu dumbbell. All new compounds were characterized using IR, electrospray ionization mass spectrometry, (1)H NMR, elemental analysis, and single-crystal X-ray diffraction. The ligand was oxidized by both silver(I) and copper(II), and a cyclovoltammetric study revealed that 1 suffered irreversible reduction and oxidation in a dichloromethane solution at -2.04 and 0.10 V, respectively, versus ferrocene.
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Affiliation(s)
- Hanh V Ly
- Department of Chemistry, University of Calgary, Alberta, Canada
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22
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Abstract
The triple-decker cations trans-[(Cp*Sn)(2)(mu-eta(5):eta(5)-Cp*)](+) and trans-[(Cp*Pb)(2)(mu-eta(5):eta(5)-Cp*)](+) have been prepared and structurally characterized as their [B(C(6)F(5))(4)](-) salts from the reactions of [Cp*M][B(C(6)F(5))(4)](M = Sn, Pb) with the appropriate decamethylmetallocene. Both triple-decker cations adopt a cisoid arrangement of terminal Cp* groups, whereas the two known triple-decker main-group anions possess a transoid arrangement of terminal Cp groups. The reason for this conformational difference has been probed on the basis of DFT calculations.
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Affiliation(s)
- Jamie N Jones
- Department of Chemistry and Biochemistry, University of Texas at Austin, Austin, TX 78712, USA
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23
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Beck V, O’Hare D. Triple-decker transition metal complexes bridged by a single carbocyclic ring. J Organomet Chem 2004. [DOI: 10.1016/j.jorganchem.2004.06.011] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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24
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Organometallic Complexes of Boron, Silicon, and Phosphorus Analogues of Azoles. ADVANCES IN HETEROCYCLIC CHEMISTRY 2003. [DOI: 10.1016/s0065-2725(03)85001-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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25
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n Ligands Coordination Compounds with Organoantimony and Sbn Ligands. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2003. [DOI: 10.1016/s0065-3055(03)49003-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
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