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J Am Chem Soc. 2009 Jun 24;131(24):8338-9. doi: 10.1021/ja900291w.

Coordination-driven self-assembly of a discrete molecular cage and an infinite chain of coordination cages based on ortho-linked oxacalix[2]benzene[2]pyrazine and oxacalix[2]arene[2]pyrazine.

Author information

1
Division of Supramolecular Chemistry and Medicinal Chemistry, Key Laboratory of Brain Functional Genomics, MOE & STCSM, Shanghai Institute of Brain Functional Genomics, East China Normal University, Shanghai 200062, China.

Abstract

Coordination-driven self-assembly of ortho-linked oxacalix[2]benzene[2]pyrazine (1) as well as oxacalix[2]arene[2]pyrazine (2) with a silver cation resulted in the formation of a discrete molecular cage (3) and a one-dimensional chain of coordination cages (4), respectively. Single crystal X-ray diffraction analysis confirmed the structures of 3 and 4. The silver ions in 3 adopted tetrahedral coordination geometries while the silver ions in 4 adopted square-planar coordination geometries. The void of the metal-containing cage 3 was occupied by a methyl group of an acetonitrile bonded to a neighboring cage in the solid state, and one benzene ring was found to reside in the void of each cage of complex 4.

PMID:
19489554
DOI:
10.1021/ja900291w
[Indexed for MEDLINE]

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