Structure of a Pt/Re cluster complex: Aggregation of ions in crystals of [Pt3Re(CO)2P(OMe)3μ3-O)2(μ-dppm)3][AsF6]
| Autor: | Ljubica Manojlović-Muir, Kenneth W. Muir, Ali Ashgar Torabi |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Hydrogen bond
Organic Chemistry chemistry.chemical_element Crystal structure Rhenium Biochemistry Inorganic Chemistry Crystal Metal Crystallography chemistry visual_art X-ray crystallography Materials Chemistry visual_art.visual_art_medium Physical and Theoretical Chemistry Platinum Monoclinic crystal system |
| Zdroj: | Journal of Organometallic Chemistry. :319-326 |
| ISSN: | 0022-328X |
| Popis: | The crystal structure of the molecular salt [Pt 3 Re(CO) 2 P(OMe) 3 (μ 3 -O) 2 (μ-dppm) 3 ][AsF 6 ], dppm = Ph 2 PCH 2 PPh 2 , has been determined by X-ray diffraction. The crystals are monoclinic, space group P 2 1 / c , a = 15.614(2), b = 21.550(2), c = 24.810(2) A, β = 93.518(10)°, V = 8332.5(13) A 3 , Z = 4, R = 0.0501 for 7403 reflections with I ≥ 2 σ ( I ). The structure of the cation contains a Pt 3 Re(μ 3 -O) 2 core with a tetrahedral arrangement of the metal atoms. One Pt atom is not directly involved in metal-metal bonding, which is limited to a triangle containing one Re and two Pt atoms [Pt-Pt 2.815(1), Pt-Re 2.779(1) and 2.835(1) A]. The packing of ions in the crystal is governed by their relative size: the large cations self-assemble into one-dimensional aggregations, leaving the anions to occupy the cavities in the cationic substructure. Crystal cohesion is enhanced by hydrogen bonding of C-H ⋯ O type, involving carbonyl oxygen atoms, and by C-H ⋯ F interactions. |
| Databáze: | OpenAIRE |
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