ISSN:
1434-1948
Keywords:
Manganese
;
Coordination modes
;
1-Hydronaphthalene complexes
;
Trimethylphosphite addition
;
Photochemistry
;
Chemistry
;
General Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Tricarbonyl(2-4,4a,8a-η-1-hydronaphthalene)manganese (1) reacts readily with trimethyl phosphite to afford tricarbonyl(2-4-η-1-hydronaphthalene)(trimethyl phosphite)manganese (2), by a simultaneous η5-η3-hapticity change. Upon UV irradiation, one carbonyl ligand is preferentially cleaved from 2 to yield dicarbonyl(2-4,4a,8a-η-1-hydronaphthalene)(trimethyl phosphite)manganese (3), with a η5-coordinated 1-hydronaphthalene ligand. In a similar fashion 3 also reacts with trimethyl phosphite and forms dicarbonyl(2-4-η-1-hydronaphthalene)bis(trimethyl phosphite)manganese (4), which loses carbon monoxide upon UV irradiation to afford carbonyl(2-4,4a,8a-η-1-hydronaphthalene)bis(trimethyl phosphite)manganese (5). All compounds were characterized by IR and NMR spectroscopy. The η5-1-hydronaphthalene complexes 1, 3 and 5 show hindered 1,4-H shifts of 1-Hendo. Considerable energy barriers were also found for the rotation of the 1-hydronaphthalene ligand in 2-5.
Type of Medium:
Electronic Resource
