Host-guest behavior of a heavy-atom heterocycle Re4(CO)16(μ-SbPh2)2(μ-H)2 obtained from a palladium-assisted ring opening dimerization of Re2(CO)8(μ-SbPh2)(μ-H)

Inorg Chem. 2015 Apr 6;54(7):3536-44. doi: 10.1021/acs.inorgchem.5b00080. Epub 2015 Mar 10.

Abstract

The heavy-atom heterocycle Pd[Re2(CO)8(μ-SbPh2)(μ-H)]2 (5) has been synthesized by the palladium-catalyzed ring-opening cyclodimerization of the three-membered heterocycle Re2(CO)8(μ-SbPh2)(μ-H) (3). The Pd atom occupies the center of the ring. The Pd atom in 5 can be removed reversibly to yield the palladium-free heterocycle [Re2(CO)8((μ-SbPh2)(μ-H)]2 (6).