Supramolecular Interactions of Group VI Metal Carbonyl Complexes: The Facilitating Role of 1,3-Bis( -isocyanophenyl)urea
| Autor: | Millard, Shaun, Fothergill, Jenny W., Anderson, Zoe, Brown, Eric. C., King, Matthew D., Colson, Adam C. |
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| Rok vydání: | 2019 |
| Předmět: |
010405 organic chemistry
Ligand Chemistry Isocyanide Supramolecular chemistry Metal carbonyl 010402 general chemistry 01 natural sciences 0104 chemical sciences Inorganic Chemistry chemistry.chemical_compound Transition metal Polymer chemistry Urea Physical and Theoretical Chemistry Anion binding Equilibrium constant |
| DOI: | 10.1021/acs.inorgchem.9b00917 |
| Popis: | An investigation of supramolecular phenomena involving zerovalent transition metal complexes was facilitated by the production of the ditopic isocyanide ligand 1,3-bis( p-isocyanophenyl)urea, which was synthesized via substoichiometric phosgenation of 4-isocyanophenylamine and used to coordinate group VI metal carbonyl fragments. The resulting binuclear organometallic complexes were observed to pack into ladder-like anisotropic arrays in the solid state. Crystallographic and computational evidence suggests that this packing motif can be attributed to a combination of intermolecular π-π and urea-π interactions. Similar to other N, N'-diarylureas bearing electron-withdrawing groups, 1,3-bis( p-isocyanophenyl)urea and the organometallic complexes prepared therefrom also exhibit an affinity toward anion binding in nonaqueous solution. Equilibrium constants ( K) for the formation of host-guest complexes between the organometallic derivatives of 1,3-bis( p-isocyanophenyl)urea and chloride, nitrate, and acetate anions exceed 103, 104, and 105 M-1, respectively. |
| Databáze: | OpenAIRE |
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