Substitution of [Ru10C2(CO)24]2- with allene. Reversible formation of [Ru10C2(CO)22(μ-η22-C3H4)]2- and [Ru10C2(CO)20(μ-η2

Kwangyeol Lee, John R. Shapley

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

Substitution of carbonyl ligands in [Ru10C2(CO)24]2- (1) by allene (1,2-propadiene) proceeds cleanly in diglyme at 90°C (1 atm) to afford the monoallene derivative [Ru10C2(CO)22(μ-η2: η2-C3H4)]2- (2). Treatment of either 1 or 2 with allene at 140°C (1 atm) forms the disubstituted derivative [Ru10C2(CO)20(μ-η22-C3H4)2]2- (3) in high yield. The new clusters have been isolated as salts with [PPN]+ or [PPh3CH2CH2PPh3]2+ counterions and have been characterized by analytical, spectroscopic, and X-ray crystallographic methods. The framework structures of both molecular cluster anions 2 and 3 are based on edge-shared bioctahedra, with the allene ligands bridging one or two pairs of apical positions, respectively. The idealized symmetries are C2 for 2 and D2 for 3. The solution structures and dynamics of 2 and 3 have been studied by 13C NMR spectroscopy, including variable-temperature and 13C-13C COSY experiments.

Original languageEnglish
Pages (from-to)4030-4036
Number of pages7
JournalOrganometallics
Volume17
Issue number18
DOIs
Publication statusPublished - 1998 Aug 31
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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