Protonation of triosmium clusters Os3(CO)9(μ−CO)(μ3−2σ,η2−HCCR) and Os3(μ−H)(CO)9(μ3−σ,2η2−CCR) (R = CH2OH, CMe2OH, C(Me) = CH2
| Autor: | A. I. Yanovsky, V. V. Krivykh, Yu. T. Struchkov, F. M. Dolgushin, O.A. Kizas, A. A. Koridze, Eugenii V. Vorontsov |
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| Rok vydání: | 1996 |
| Předmět: |
Ligand
Stereochemistry Organic Chemistry Cationic polymerization Protonation Crystal structure Triclinic crystal system Biochemistry Medicinal chemistry Inorganic Chemistry chemistry.chemical_compound chemistry Materials Chemistry Cluster (physics) Phosphonium Physical and Theoretical Chemistry Triphenylphosphine |
| Zdroj: | Journal of Organometallic Chemistry. 508:39-47 |
| ISSN: | 0022-328X |
| DOI: | 10.1016/0022-328x(95)05871-l |
| Popis: | Protonation of Os3(CO)(μ−CO(μ3−2σ,η2−HCCR) (R = CH2OH (1) R = CMe2OH (2) and Os3(μ−H)(CO)9(μ3−σ,2η2−CCR) (R = CH2OH (3), R = CMe2OH (4), R = C(Me) = CH2 (5)) affords cationic complexes with the 5e-and 6e-propargyl ligands [Os3(CO)9(μ−CO)(μ3−3σ,η2−HCCCR′2)]+ (R′ = H (6), R′ = Me ( 7 ) and [Os3(μ−H)(CO)9(μ3−2σ,2η2−CCR′2)+ ( R′ = H ( 8 ) , R′ = Me ( 9 ) respectively. Reactrions of the cationic complexes with PPh3 were studied. The treatment of solutions of complexes 6–9 with triphenylphosphine leads to the phosphonium derivatives of the Os3 clusters Os 3 ( CO ) 9 (μ 2 −2σ,η 2 - HC CCR ′ 2 P + Ph 3 ) ( R ′ = H , (10); R ′ = Me, ( 11 )) as well as complexes Os 3 (μ- H(CO ) 9 (μ 3 −σ,2η 2 − P + Ph in3 CCCR ′ 2 ) ( R = H ( 12 , R ′ = Me ( 13 )) with the novel phosphonium allenyl ligand. The cluster Os3(CO)8(μ−CO){HC2[C(Me)CH2]COC[C(Me)CH2]CH} (4) synthesized and its X-ray study was carried out (R = 0.0504 for 5510 observed reflections). Crystals of 14 are triclinic, at 20°C: a = 8.591(2), b = 11.437(2), c = 12.642(3) A , α = 93.17(2), β = 104.67(2), γ = 101.83(2)°, V = 1168.6(4) A , d calc = 2.793 g cm −3 , Z = 2 , space group P 1 . |
| Databáze: | OpenAIRE |
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