1,2,4-Triazolato barium complex: The layered polymeric planar structure with an μ2-η2,η1 bridging coordination

The [Ba(N(SiMe3)2)2]·2THF reacts with 1,2,4-triazole to afford an unusually polymeric 1,2,4-triazolato barium complex [trz2Ba(DMSO)2]∞ (trz = 1,2,4-triazolato) with a 2D coordination network, which consists of two-dimensional [trz2Ba]∞ sheets entrained within the stacked two-dimensional framework of [trz2Ba(DMSO)2]∞ polymer. Complex [trz2Ba(DMSO)2]∞ represents the first heavier alkaline earth 1,2,4-triazolato complex with an η2 and η1 bridging coordination.