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Zhang JJ, Lachgar A. Octahedral Metal Clusters as Building Blocks of Trimetallic Superexpanded Prussian Blue Analogues. Inorg Chem 2015; 54:1082-90. [DOI: 10.1021/ic502401n] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Jian-Jun Zhang
- Department
of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
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Carr MJ, McGrath TD, Stone FGA. Synthesis and Reactivity of 10-Vertex arachno-Platinacarboranes. Organometallics 2008. [DOI: 10.1021/om7012056] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michael J. Carr
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76798-7348
| | - Thomas D. McGrath
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76798-7348
| | - F. Gordon A. Stone
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76798-7348
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3
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Franken A, McGrath TD, Stone FGA. A 10-Vertex Iron−Dicarbollide System Formed by Insertion of {Fe(CO)4} into 8-Vertex [closo-1-CB7H8]−: Synthesis and Reactivity Studies. Organometallics 2008. [DOI: 10.1021/om700865s] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andreas Franken
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76798-7348
| | - Thomas D. McGrath
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76798-7348
| | - F. Gordon A. Stone
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76798-7348
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Carr MJ, McGrath TD, Stone FGA. Photochemical Synthesis and Reactivity Studies of Dirhenacarboranes. Inorg Chem 2007; 47:713-22. [DOI: 10.1021/ic701496x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michael J. Carr
- Department of Chemistry and Biochemistry, Baylor University, Waco, Texas 76798-7348
| | - Thomas D. McGrath
- Department of Chemistry and Biochemistry, Baylor University, Waco, Texas 76798-7348
| | - F. Gordon A. Stone
- Department of Chemistry and Biochemistry, Baylor University, Waco, Texas 76798-7348
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Franken A, Hodson BE, McGrath TD, Stone FGA. Synthesis and reactivity of fluorinated ferracarborane anions. Dalton Trans 2007:2254-62. [PMID: 17534486 DOI: 10.1039/b701219e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The ferracarborane [N(PPh3)2][6,6,6,10,10,10-(CO)6-closo-6,10,1-Fe2CB7H8] reacts in CH2Cl2 with 3 molar equivalents of Ag[PF6] to yield the trifluoro-substituted species [N(PPh3)2][7,8,9-F3-6,6,6,10,10,10-(CO)6-closo-6,10,1-Fe2CB7H5]. Compound undergoes structural rearrangement in toluene at reflux temperatures, forming [N(PPh3)2][8,9,10-F3-6,6,6,7,7,7-(CO)6-closo-6,7,1-Fe2CB7H5]. Alternatively, reaction of either or with a 10-fold excess of Ag[PF6] in CH2Cl2 forms two species: namely, [N(PPh3)2][2,7,9,10-F4-6,6,6,8,8,8-(CO)6-closo-6,8,1-Fe2CB7H4], in which one further B-F substitution has occurred and the {Fe2CB7} cluster core has rearranged, plus a mono-iron co-product, [N(PPh3)2][3,8,9-F3-7,7,7-(CO)3-closo-7,1-FeCB7H5] that is formed by polyhedral contraction. Treatment of with [NO][BF4] in CH2Cl2 results in CO substitution at the 4-connected iron vertex [Fe10], producing the zwitterionic complex [7,8,9-F3-6,6,6,10,10-(CO)5-10-NO-closo-6,10,1-Fe2CB7H5]. Addition of Me3NO to a mixture of and PEt3 in CH2Cl2 also results in CO substitution, forming the isomeric species [N(PPh3)2][7,8,9-F3-6,6,m,10,10-(CO)5-n-PEt3-closo-6,10,1-Fe2CB7H5] [m=6, n=10; m=10, n=6] in a 5:1 ratio. Treatment of with [NO][BF4] and then CNBut in CH2Cl2 allows further, successive CO substitution at Fe10 to yield first a neutral, zwitterionic complex [7,8,9-F3-6,6,6,10-(CO)4-10-NO-10-PEt3-closo-6,10,1-Fe2CB7H5] and then [7,8,9-F3-6,6,6-(CO)3-10-CNBut-10-NO-10-PEt3-closo-6,10,1-Fe2CB7H5]. The molecular structures of compounds and have been established by X-ray diffraction.
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Affiliation(s)
- Andreas Franken
- Department of Chemistry & Biochemistry, Baylor University, Waco, TX 76798-7348, USA
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6
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McGrath TD, Stone FGA. Mono- and bis-cobalt complexes with carbonyl, nitrosyl, and monocarbollide ligands. Inorganica Chim Acta 2007. [DOI: 10.1016/j.ica.2006.02.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Franken A, McGrath TD, Stone FGA. Iridium−Iron−Monocarborane Clusters from Oxidative Insertion Reactions of [IrCl(CO)(PPh3)2] with Ferracarborane Anions. J Am Chem Soc 2006; 128:16169-77. [PMID: 17165770 DOI: 10.1021/ja065042n] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The nine-vertex ferracarborane salt [N(PPh3)2][7,7,7-(CO)3-closo-7,1-FeCB7H8] (1) reacts with an excess of [IrCl(CO)(PPh3)2] in the presence of Tl[PF6] to form, successively, the bimetallic species [7,7,9,9,9-(CO)5-7-PPh3-closo-7,9,1-IrFeCB6H7] (3), in which one {BH}- vertex has formally been subrogated by an {Ir(CO)2(PPh3)} unit, and the trimetallic complex [6,7,9-{Ir(CO)(PPh3)2}-7,9-(mu-H)2-7,9,9-(CO)3-7-PPh3-closo-7,9,1-IrFeCB6H6] (5), which contains an {FeIr2} triangle. The {FeIrCB6} core in 5 resembles that in 3 with, in addition, the Fe...Ir connectivity being spanned by an {Ir(CO)(PPh3)2} fragment and the consequent Fe-Ir and Ir-Ir bonds bridged by hydrido ligands. In contrast to the above, treatment of the 10-vertex diferracarborane salt [N(PPh3)2][6,6,6,10,10,10-(CO)6-closo-6,10, 1-Fe2CB7H8] (2) with the same reagents yields two very different, trimetallic complexes, namely [8,10-{Ir(mu-PPh2)(Ph)(CO)(PPh3)}-8-(mu-H)-6,6,6,10,10-( CO)5-closo-6,10,1-Fe2CB7H7] (6) and [6,7,10-{Fe(CO)3}-6-(mu-H)-6,10,10,10-(CO)4-6-PPh3-closo-6,10,1-IrFeCB7H7] (7). In 6, an exo-polyhedral {IrPh(CO)(PPh3)} moiety is attached to a {closo-6,10,1-Fe2CB7} framework via a PPh2-bridged Fe-Ir bond and a B-HIr agostic-type linkage, the iridium center formally having inserted into one P-Ph bond of a PPh3 unit. Complex 7 contains an {IrFeCB7} cluster core, with an exo-polyhedral {Fe(CO)3} moiety bridging a {BIrFe} triangular face and with an additional Ir-H-Fe bridge. However, this metal atom arrangement reveals that iridium and iron moieties have exchanged exo- and endo-polyhedral sites with respect to the 10-vertex metallacarborane. X-ray diffraction studies upon 3, 5, 6, and 7 confirmed their novel structural features; some preliminary reactivity studies upon these compounds are also reported.
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Affiliation(s)
- Andreas Franken
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76798-7348, USA
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McGrath TD, Du S, Hodson BE, Stone FGA. Construction of Metal Butterflies on a Metallacarborane Scaffold. 2. Synthesis and Structures of Hetero-tri- and -tetrametallic Clusters. Organometallics 2006. [DOI: 10.1021/om060418r] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Thomas D. McGrath
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76798-7348
| | - Shaowu Du
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76798-7348
| | - Bruce E. Hodson
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76798-7348
| | - F. Gordon A. Stone
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76798-7348
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McGrath TD, Du S, Hodson BE, Lu XL, Stone FGA. Construction of Metal Butterflies on a Metallacarborane Scaffold. 1. Synthesis and Structures of Bimetallic Precursors. Organometallics 2006. [DOI: 10.1021/om060417z] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Thomas D. McGrath
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76798-7348
| | - Shaowu Du
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76798-7348
| | - Bruce E. Hodson
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76798-7348
| | - Xiu Lian Lu
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76798-7348
| | - F. Gordon A. Stone
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76798-7348
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Lu XL, McGrath TD, Stone FGA. Synthesis and Reactivity of 10- and 12-Vertex Cobalt−Monocarborane Anions Containing Multiple Metal Centers. Organometallics 2006. [DOI: 10.1021/om060123d] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiu Lian Lu
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76798-7348
| | - Thomas D. McGrath
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76798-7348
| | - F. Gordon A. Stone
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76798-7348
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Franken A, McGrath TD, Stone FGA. Ten-vertex iron-monocarbollide complexes: synthesis and reactivity of the anion [4,9-{Fe(CO)4}-9,9,9-(CO)3-arachno-9,6-FeCB8H11]-. Inorg Chem 2006; 45:2669-77. [PMID: 16529490 DOI: 10.1021/ic051946i] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reagent [arachno-4-CB8H14] reacts with [Fe3(CO)12] in tetrahydrofuran (THF) at reflux temperatures, followed by addition of [N(PPh3)2]Cl, to afford [N(PPh3)2][4,9-{Fe(CO)4}-9,9,9-(CO)3-arachno-9,6-FeCB8H11] (3). In the anion of 3, one iron atom is part of the open CBBFeBB face of a 10-vertex {arachno-9,6-FeCB8} cage, to which the second iron atom is attached via an Fe-Fe bond and an additional exo-polyhedral Fe-B sigma bond. Upon heating 3 in refluxing toluene, the closed 10-vertex species [N(PPh3)2][2,2,2-(CO)3-closo-2,1-FeCB8H9] (4) is obtained, whereas the isomeric compound [N(PPh3)2][6,6,6-(CO)3-closo-6,1-FeCB8H9] (5) is isolated upon heating [closo-4-CB8H9]- and [Fe3(CO)12] in refluxing THF with subsequent addition of [N(PPh3)2]Cl. Protonation of 3 using CF3SO3H in CH2Cl2 gives the charge-compensated compound [4,9-{Fe(CO)4}-4-(mu-H)-9,9,9-(CO)3-arachno-9,6-FeCB8H11] (6), in which the B-Fe sigma bond of the precursor has been converted to a B-H right harpoon-up Fe linkage. In contrast, 3 with {M(PPh3)}+ gives the trimetallic species [1,3,4,9-{MFe(CO)4(PPh3)}-1,3-(mu-H)2-9,9,9-(CO)3-arachno-9,6-FeCB8H9] (M = Cu (7), Ag 8) in which the three metal centers form a V-shaped M-Fe-Fe unit. Compound 6 reacts with PEt3 in the presence of Me(3)NO to yield [4,9-(PEt3)2-9,9-(CO)2-nido-9,6-FeCB8H10] (9). In the latter, the formerly exo-polyhedral {Fe(CO)4} fragment has been replaced by a PEt3 ligand, with a second PEt3 substituting one CO group at the remaining cluster iron vertex. The novel structural features of compounds 3-9 have been confirmed by single-crystal X-ray diffraction studies.
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Affiliation(s)
- Andreas Franken
- Department of Chemistry and Biochemistry, Baylor University Waco, Texas 76798-7348, USA
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Lei P, McGrath TD, Stone FGA. Oxidation of the Bis-molybdenum(0) Trianion [1,3,6-{Mo(CO)3}-3,6-(μ-H)2-1,1,1-(CO)3-2-Ph-closo-1,2-MoCB9H7]3-: Metal and Boron Vertex Substitution and Cluster Expansion. Organometallics 2006. [DOI: 10.1021/om0600543] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Peng Lei
- Department of Chemistry and Biochemistry, Baylor University, Waco, Texas 76798-7348
| | - Thomas D. McGrath
- Department of Chemistry and Biochemistry, Baylor University, Waco, Texas 76798-7348
| | - F. Gordon A. Stone
- Department of Chemistry and Biochemistry, Baylor University, Waco, Texas 76798-7348
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Metal Complexes of Monocarbon Carboranes: A Neglected Area of Study? ADVANCES IN ORGANOMETALLIC CHEMISTRY 2005. [DOI: 10.1016/s0065-3055(05)53001-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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