Drupal-Biblio17<style face="normal" font="default" size="100%">Synthesis, crystal structure and Hirshfeld surface analysis of bis­[2-amino-5-(ethyl­sulfan­yl)-1,3,4-thia­diazol-3-ium] bis­(perchlorato-κO)bis­(picolinato-κ2N,O)copper(II)</style>