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{{chembox |
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| Name = Decacarbonyldihydridotriosmium |
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| verifiedrevid = 428743017 |
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| ImageFile = H2Os3(CO)10.png |
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| Name = Decacarbonyldihydridotriosmium |
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| ImageSize = 250px |
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| ImageFile = H2Os3(CO)10 2022.svg |
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| ImageName = |
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| ImageSize = 200px |
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| IUPACName = Decacarbonyldihydridotriosmium, <br />decacarbonyl-1κ<sup>3</sup>''C'',2κ<sup>3</sup>''C'',3κ<sup>4</sup>''C''-<br />di-μ-hydrido-1:2κ<sup>2</sup>''H'';1:2κ<sup>2</sup>''H''<br />-''triangulo''-triosmium (3 ''Os''—''Os'') |
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| OtherNames = |
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| IUPACName = Decacarbonyldihydridotriosmium,<br />Decacarbonyl-1κ<sup>3</sup>''C'',2κ<sup>3</sup>''C'',3κ<sup>4</sup>''C''-<wbr />di-μ-hydrido-1:2κ<sup>2</sup>''H'';1:2κ<sup>2</sup>''H''<wbr />-''triangulo''-triosmium(3 ''Os''—''Os'') |
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| Section1 = {{Chembox Identifiers |
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| CASNo = 41766-80-7 |
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| OtherNames = |
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| Section1 = {{Chembox Identifiers |
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| RTECS = |
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| CASNo_Ref = {{cascite|correct|??}} |
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| CASNo = 41766-80-7 |
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| PubChem = 139143320 |
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| RTECS = |
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| StdInChI=1S/10CO.3Os.2H/c10*1-2;;;;;/q;;;;;;;;;;;2*+1;2*-1 |
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| StdInChIKey = ABHQEXNWCLZGFV-UHFFFAOYSA-N |
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| SMILES = ..#.#.#.#.#.#.#.#.#.#... |
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| Section2 = {{Chembox Properties |
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| Section2 = {{Chembox Properties |
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| Formula = H<sub>2</sub>Os<sub>3</sub>(CO)<sub>10</sub> |
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| Formula = H<sub>2</sub>Os<sub>3</sub>(CO)<sub>10</sub> |
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| MolarMass = 852.81 g/mol |
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| MolarMass = 852.81 g/mol |
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| Appearance = Deep purple-violet crystals |
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| Appearance = Deep purple-violet crystals |
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| Density = 3.48 g/cm<small>3</small> |
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| Density = 3.48 g/cm<small>3</small> |
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| Solubility = no |
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| Solubility = insoluble |
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| Solvent = other solvents |
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| Solvent = other solvents |
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| SolubleOther = decomp in ] |
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| SolubleOther = reacts with ]s |
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| MeltingPt = |
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| MeltingPt = |
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| BoilingPt = decomposes |
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| BoilingPt = decomposes |
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| Section3 = {{Chembox Structure |
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| Section3 = {{Chembox Structure |
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| Coordination = triangular cluster |
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| Coordination = triangular cluster |
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| CrystalStruct = |
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| Dipole = |
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| Section7 = {{Chembox Hazards |
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| Section7 = {{Chembox Hazards |
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| ExternalMSDS = |
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| MainHazards = Toxic |
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| MainHazards = Toxic |
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| Section8 = {{Chembox Related |
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| Section8 = {{Chembox Related |
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| OtherCpds = ] |
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| OtherCompounds = ] |
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'''Decacarbonyldihydridotriosmium''' is a ] with the formula H<sub>2</sub>Os<sub>3</sub>(CO)<sub>10</sub>. This purple-violet ] air-stable cluster is noteworthy because it is ] and hence adds a variety of substrates. |
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'''Decacarbonyldihydridotriosmium''' is an ] with the formula H<sub>2</sub>Os<sub>3</sub>(CO)<sub>10</sub>. This purple-violet ] air-stable cluster is noteworthy because it is ] and hence adds a variety of substrates. |
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==Structure and synthesis== |
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==Structure and synthesis== |
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The trinuclear cluster features an isosceles triangular array of metals with one short edge (''r''<sub>Os-Os</sub> = 2.68 Å), which is spanned by the two hydride ligands, and two longer edges (r<sub>Os-Os</sub> = 2.81 Å).<ref>{{cite journal | author = Melvyn Rowen Churchill, Frederick J. Hollander, and John P. Hutchinson | title = Structural studies on polynuclear osmium carbonyl hydrides. 5.Crystal structure and molecular geometry of di-μ-hydrido-decacarbonyltriosmium, (μ-H)<sub>2</sub>Os<sub>3</sub>(CO)<sub>10</sub> | year = 1977 | journal = ] | volume = 28 | issue = | pages = 2697–2700 | doi = 10.1021/ic50177a006}}</ref> It can be described as Os(CO)<sub>4</sub><sub>2</sub>. The bonding in the Os<sub>2</sub>H<sub>2</sub> subunit has been compared to the 3-center, 2e bonding in diborane. It is prepared by purging a solution of ] in ] (or other inert solvent of similar boiling point) with ].<ref>{{cite journal | author = Kaesz, H. D. | title = Decacarbonyldi-μ-Hydridotriosmium: Os<sub>3</sub>(μ-H)<sub>2</sub>(CO)<sub>10</sub> | year = 1990 | journal = ] | volume = 28 | pages = 238–39| doi = 10.1002/9780470132593.ch60 | last2 = Glavee | first2 = G. N. | last3 = Angelici | first3 = R. J.}}</ref> |
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The trinuclear cluster features an isosceles triangular array of metals with one short edge (''r''<sub>Os-Os</sub> = 2.68 Å), which is spanned by the two hydride ligands, and two longer edges (r<sub>Os-Os</sub> = 2.81 Å).<ref>{{cite journal |author1=Melvyn Rowen Churchill |author2=Frederick J. Hollander |author3=John P. Hutchinson | title = Structural studies on polynuclear osmium carbonyl hydrides. 5.Crystal structure and molecular geometry of di-μ-hydrido-decacarbonyltriosmium, (μ-H)<sub>2</sub>Os<sub>3</sub>(CO)<sub>10</sub> | year = 1977 | journal = ] | volume = 28 | issue = 11| pages = 2697–2700 | doi = 10.1021/ic50177a006}}</ref> It can be described as Os(CO)<sub>4</sub><sub>2</sub>. The bonding in the Os<sub>2</sub>H<sub>2</sub> subunit has been compared to the ] in ]. The molecule forms a variety of adducts with loss of H<sub>2</sub>.<ref>Keister, J. B.; Shapley, J. R. "Solution Structures and Dynamics of complexes of Decacarbonyldihydrotriosmium with Lewis Bases" Inorganic Chemistry 1982, volume 21, pages 3304–3310; {{doi|10.1021/ic00139a011}}.</ref> |
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It is prepared by purging a solution of ] in ] (or other inert solvent of similar boiling point) with ].<ref>{{cite book | author = Kaesz, H. D. | title = Decacarbonyldi-μ-Hydridotriosmium: Os<sub>3</sub>(μ-H)<sub>2</sub>(CO)<sub>10</sub> | chapter = Decacarbonyldi-μ-Hydridotriosmium: Os <sub>3</sub> (μ-H) <sub>2</sub> (Co) <sub>10</sub> | year = 1990 | volume = 28 | pages = 238–39| doi = 10.1002/9780470132593.ch60 | series = Inorganic Syntheses| isbn = 978-0-471-52619-3 }}</ref> |
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:Os<sub>3</sub>(CO)<sub>12</sub> + H<sub>2</sub> → Os<sub>3</sub>H<sub>2</sub>(CO)<sub>10</sub> + 2 CO |
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:Os<sub>3</sub>(CO)<sub>12</sub> + H<sub>2</sub> → Os<sub>3</sub>H<sub>2</sub>(CO)<sub>10</sub> + 2 CO |
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==Reactions== |
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==Reactions== |
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The cluster reacts with a wide range of reagents under mild conditions. Illustrative is its reaction with <sub>2</sub> to give <sub>3</sub>Os<sub>3</sub>(CO)<sub>9</sub>. With ], it gives Os<sub>3</sub>(CO)<sub>10</sub>(μ-H)(μ-CH<sub>3</sub>), exhibiting an ], the first identified in a metal cluster.<ref>{{cite journal | author = R. Bruce Calvert, John R. Shapley | title = Activation of hydrocarbons by unsaturated metal cluster complexes. 6. Synthesis and characterization of methyldecacarbonylhydridotriosmium, methylenedecacarbonyldihydridotriosmium, and methylidynenonacarbonyltrihydridotriosmium. Interconversion of cluster-bound methyl and methylene ligands | journal = ] | year = 1977 | volume = 99 | pages = 5225–5226 | doi = 10.1021/ja00457a077}}</ref> |
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The cluster reacts with a wide range of reagents under mild conditions. Illustrative is its reaction with ] to give Os<sub>3</sub>(CO)<sub>10</sub>(μ-H)(μ-CH<sub>3</sub>), exhibiting an ], the first identified in a metal cluster.<ref>{{cite journal |doi=10.1021/ja00457a077|title=Activation of Hydrocarbons by Unsaturated metal Cluster Complexes. 6. Synthesis and Characterization of Methyldecacarbonylhydridotriosmium, Methylenedecacarbonyldihydridotriosmium, and Methylidynenonacarbonyltrihydridotriosmium. Interconversion of Cluster-Bound Methyl and Methylene Ligands |year=1977 |last1=Calvert |first1=R. Bruce |last2=Shapley |first2=John R. |journal=Journal of the American Chemical Society |volume=99 |issue=15 |pages=5225–5226 |bibcode=1977JAChS..99.5225C }}</ref><ref>{{cite journal |doi=10.1021/ja00492a047|title= Decacarbonyl(methyl)hydrotriosmium: NMR Evidence for a Carbon<sup>...</sup>Hydrogen<sup>...</sup>Osmium Interaction |year=1978 |last1=Calvert |first1=R. Bruce |last2=Shapley |first2=John R. |journal=Journal of the American Chemical Society |volume=100 |issue=24 |pages=7726–7727 }}</ref> |
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==References== |
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==References== |
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{{Osmium compounds}} |
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