Well-isolated pyrazine-bridged copper(II) chains: synthesis and magneto-structural analysis

A pair of well-isolated 1-D-QHAF compounds with the molecular formula [Cu(pz)(L)2(H2O)2](ClO4)2 with L = 3-Cl-4-hydroxypyridine (1) and 3-Br-4-hydroxypyridine (2) (catena-(diaqua-bis(3-chloro/bromo...