Conductive zigzag Pd(III)–Br chain complex realized by multiple-hydrogen-bond approach

Coexistence of zigzag structure and uncommon Pd(III) oxidation state in quasi-1D halogen-bridged metal complexes was realized in a conductive Br-bridged Pd chain complex, [Pd(dabdOH)2Br]SO4·3H2O (2), for the first time. Intra- and interchain hydrogen-bond network among (2S,3S)-2,3-diaminobutane-1,4-diol (dabdOH) ligand, SO42− and H2O molecules support this unusual structure and the electronic state. The electrical conductivity of 2 reached 0.05 S cm−1 at room temperature.