Organic−Organometallic Crystal Engineering: Novel Formation of a Honeycomb Supramolecular Architecture of [Re2(μ-OMe)3(CO)6]- Anions Encapsulating a Linear H-Bonded Chain of [DABCO-H]+ Cations
摘要:
The title salt [Re-2(mu-OMe)(3)(CO)(6)](-)[DABCO-H](+) (1) was prepared as colorless prismatic crystals by the reaction of DABCO with Re(CO)(5)(OTf) in refluxing methanol solution and was characterized by spectroscopic means including single-crystal X-ray diffraction techniques. The molecular structure of 1 revealed that a novel honeycomb supramolecular architecture of the anionic organometallic complex created a cavity with an effective diameter of 7.450-(3) Angstrom that houses a linear H-bonded chain of [DABCO-H]+ in its center. This structure also represents the first example of the use of a linear chain of [DABCO-H](+) species as a countercation for a coordination compound.