abstract
The reaction between fluorenyllithium and Mo(eta(3)-C3H5)Cl-(NCMe)(2)(CO)(2) led to the isolation of di-mu(3)-chlorido-di-mu(3)-hydroxido-tetrakis[(eta(3)-allyl) dicarbonylmolybdenum(II)]-9-fluorenone-tetrahydrofuran (1/1/1), [Mo-4(C3H5)(4)Cl-2(OH)(2)-(CO)(8)]center dot C4H8O center dot C13H8O. The tetrametallic Mo-4 unit constitutes the first example of a complex containing simultaneously two mu(3)-OH groups and two mu(3)-Cl anions capping the metallic trigonal prism. The four crystallographically independent Mo2+ centres exhibit distorted octahedral geometry with the eta(3)-allyl groups being trans-coordinated to a mu(3)-OH group and the carbonyl groups occupying the equatorial plane. Space-filling tetrahydrofuran and 9-fluorenone molecules are engaged in strong O-H center dot center dot center dot O hydrogen-bonding interactions with Mo-4(eta(3)-allyl)(4)Cl-2(OH)(2)(CO)(8) complexes.
keywords
PHOTOSYNTHETIC WATER OXIDATION; DISTORTED CUBANE; MOLYBDENUM
subject category
Chemistry; Crystallography
authors
Amarante, TR; Goncalves, IS; Paz, FAA
our authors
Filipe Alexandre Almeida Paz
Principal Researcher
Isabel Maria de Sousa Gonçalves
Associate Professoracknowledgements
The authors are grateful to Fundacao para a Ciencia e a Tecnologia (FCT, Portugal) for their general financial support and also for specific funding toward the purchase of the single-crystal diffractometer.