Synthesis, Crystal Structure, and Magnetic and Electric Properties of the Cross-Linked Chain Cobalt Oxychloride Ba5Co5ClO13

The cross-linked chain cobalt oxychloride Ba5Co5ClO13 is reported. Single crystals were obtained by a flux method with BaCl2. A hexagonal unit cell (P63/mmc, a=5.6980(8) ? and c=24.469(5) ?) was found. The +3 and +4 valence cobalt ions were formally distributed into octahedral and tetrahedral sites coordinated by oxide ions. The compound was electrically insulating with a gap of 0.25 eV along the chain. Antiferromagnetism was found, with substantial ferromagnetic character, suggesting that the magnetic ground state is complex.