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Article Abstract
The reaction of elemental palladium with BO and SO at elevated temperature results in the formation of blue crystals of Pd[B(SO)]. Dependent on the reaction conditions, the compound crystallizes in two different polymorphs obtained as bulk samples. In both structures the Pd cations are coordinated by six oxygen atoms in form of an almost perfect octahedron. All oxygen atoms belong to the borosulfate anions [B(SO)] and link via Pd cations to an extended network structure. Within the uncommon octahedral oxygen coordination, the Pd cations reveal a d high-spin configuration, which leads to paramagnetism. Occasionally, red crystals are formed during the reaction next to the major fraction of blue crystals of Pd[B(SO)]. Single crystal X-ray structure analysis on the red crystals reveals the sum formula Pd[B(SO)(SO)] with Pd in square-planar coordination.
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