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Londesborough MGS, Janousek Z, Stíbr B, Hnyk D, Plesek J, Císarová I. The [2,5,12-C3B8H15]- anion, the first representative of the eleven-vertex hypho family of tricarbaboranes. Dalton Trans 2007:1221-8. [PMID: 17353954 DOI: 10.1039/b618082e] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In one synthetic step from the readily available 9-Me(2)SCH(2)-nido-7,8-C(2)B(9)H(11) (compound 1), the first representative of the eleven-vertex hypho family of tricarbaboranes, [2,5,12-C(3)B(8)H(15)][X] (X=[NMe4]+ or [PPh4]+) (compound 2), has been isolated in 32% yield and structurally characterised by single-crystal X-ray diffraction, multi-nuclear NMR spectroscopy, mass spectrometry, and computational methods. Both [NMe4]+ or [PPh4]+ salts of anion 2 were found to undergo degradative conversion to the [hypho-6,7-C(2)B(6)H(13)]- anion (anion 3) in alkaline medium. The [PPh4]+ salt of anion 2 converted quantitatively to the [6-CH3-arachno-5,10-C(2)B(8)H(12)]- anion (anion 4) if passed through a silica column or to the neutral 5-CH3-arachno-6,9-C(2)B(8)H(13) (compound 5) on treatment of its [NMe4]+ salt with dilute HCl. Moreover, the reaction of compound 2 with [RhCl2(C(5)Me(5))]2 afforded the eleven-vertex ruthenadicarbaborane [1-C(5)Me(5)-4-CH(3)-closo-1,2,3-RhC(2)B(8)H(9)] (compound 8). All these reactions resulted in an extrusion of one of the cluster carbon atoms into an exoskeletal position.
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Affiliation(s)
- Michael G S Londesborough
- Institute of Inorganic Chemistry, Academy of Sciences of the Czech Republic, v.v.i., 250 68, Rez, the Czech Republic.
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3
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Hnyk D, Holub J. Handles for the dicarbadodecaborane basket based on [arachno-5,10-C2B8H13]−: Oxygen. Dalton Trans 2006:2620-2. [PMID: 16804573 DOI: 10.1039/b601702a] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A unique novel oxacarbaborane was prepared by a controlled attack of closo-1,2-C2B8H10 on Bu4NOH and its molecular geometry was derived on the basis of the well-established ab initio/GIAO/NMR method, GIAO-MP2/II//MP2/6-31G* and experimental 11B chemical shifts showing an excellent agreement.
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Affiliation(s)
- Drahomír Hnyk
- Institute of Inorganic Chemistry, Academy of Sciences of the Czech Republic, CZ-250 68, Rez, Czech Republic.
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4
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Jelínek T, Štíbr B, Kennedy JD, Hnyk D, Bühl M, Hofmann M. Azacarbaborane chemistry. Butyl nitrite synthesis of the new eight-, nine- and ten-vertex azacarbaboranes exo- and endo-7-CH3-hypho-7,8-NCB6H11, nido-6,8,9-NC2B7H10, arachno-6,5,9-NC2B7H12 and arachno-6,5,10-C2NB7H12. Dalton Trans 2003. [DOI: 10.1039/b300088e] [Citation(s) in RCA: 10] [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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5
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Eleven-vertex polyhedral metalladicarbaborane chemistry. Reactions of neutral nido-5,6-C2B8H12 and the [nido-6,9-C2B8H10]2− anion to give formally closo isomeric 1-(arene) and 1-(cyclopentadiene)-1,2,4- and 1,2,3-metalladicarbaundecaboranes, and some substituent chemistry. Chiral separations, and crystal and molecular structures of [5-Br-1-(η6-C6Me6)-1,2,4-RuC2B8H9] and [2-Me-1-(η5-C5Me5)-1,2,3-RhC2B8H9]. J Organomet Chem 2000. [DOI: 10.1016/s0022-328x(00)00615-x] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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6
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Štíbr B, Holub J, Císařová I, Teixidor F, Viñas C, Fusek J, Plzák Z. The Derivatives of the 7,8,9- Series of Tricarbollides. Preparation and Structural Characterization of the 11-Vertex Tricarbaboranes 7-L-nido-7,8,9-C3B8H10 (L = Amines). Inorg Chem 1996. [DOI: 10.1021/ic951437o] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bohumil Štíbr
- Institute of Inorganic Chemistry, Academy of Sciences of the Czech Republic, 250 68 Řež, Czech Republic, Faculty of Natural Sciences of Charles University, Hlavova 2030, 128 42 Prague 2, Czech Republic, and Institute of Material Sciences, Campus UAB, 08193 Bellaterra, Spain
| | - Josef Holub
- Institute of Inorganic Chemistry, Academy of Sciences of the Czech Republic, 250 68 Řež, Czech Republic, Faculty of Natural Sciences of Charles University, Hlavova 2030, 128 42 Prague 2, Czech Republic, and Institute of Material Sciences, Campus UAB, 08193 Bellaterra, Spain
| | - Ivana Císařová
- Institute of Inorganic Chemistry, Academy of Sciences of the Czech Republic, 250 68 Řež, Czech Republic, Faculty of Natural Sciences of Charles University, Hlavova 2030, 128 42 Prague 2, Czech Republic, and Institute of Material Sciences, Campus UAB, 08193 Bellaterra, Spain
| | - Francesc Teixidor
- Institute of Inorganic Chemistry, Academy of Sciences of the Czech Republic, 250 68 Řež, Czech Republic, Faculty of Natural Sciences of Charles University, Hlavova 2030, 128 42 Prague 2, Czech Republic, and Institute of Material Sciences, Campus UAB, 08193 Bellaterra, Spain
| | - Clara Viñas
- Institute of Inorganic Chemistry, Academy of Sciences of the Czech Republic, 250 68 Řež, Czech Republic, Faculty of Natural Sciences of Charles University, Hlavova 2030, 128 42 Prague 2, Czech Republic, and Institute of Material Sciences, Campus UAB, 08193 Bellaterra, Spain
| | - Jiří Fusek
- Institute of Inorganic Chemistry, Academy of Sciences of the Czech Republic, 250 68 Řež, Czech Republic, Faculty of Natural Sciences of Charles University, Hlavova 2030, 128 42 Prague 2, Czech Republic, and Institute of Material Sciences, Campus UAB, 08193 Bellaterra, Spain
| | - Zbyněk Plzák
- Institute of Inorganic Chemistry, Academy of Sciences of the Czech Republic, 250 68 Řež, Czech Republic, Faculty of Natural Sciences of Charles University, Hlavova 2030, 128 42 Prague 2, Czech Republic, and Institute of Material Sciences, Campus UAB, 08193 Bellaterra, Spain
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