Supramolecular Interactions of Group VI Metal Carbonyl Complexes: The Facilitating Role of 1,3-Bis(p-isocyanophenyl)urea

Shaun Millard, Jenny W. Fothergill, Zoe Anderson, Eric C. Brown, Matthew D. King, Adam C. Colson

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

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 II-πand urea-πinteractions. 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.

Original languageEnglish
Pages (from-to)8130-8139
Number of pages10
JournalInorganic Chemistry
Volume58
Issue number12
DOIs
StatePublished - 17 Jun 2019

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