Crystal structures of two CuII compounds: catenapoly[[ chloridocopper(II)]-l-N-[ethoxy(pyridin-2- yl)methylidene]-N0-[oxido(pyridin-3-yl)methylidene] hydrazine-j4N,N0,O:N00] and di-l-chlorido- 1:4j2Cl:Cl-2:3j2Cl:Cl-dichlorido-2jCl,4jCl-bis- [l3-ethoxy(pyridin-2-yl)methanolato-1:2:3j3O:- N,O:O;1:3:4j3O:O:N,O]bis[l2-ethoxy(pyridin-2- yl)methanolato-1:2j3N,O:O;3:4j3N,O:O]tetracopper( II) - Sall, Ousmane; Tamboura, Farba Bouyagui; Sy, Adama; Barry, Aliou Hamady; Thiam, Elhadj Ibrahima; Mohamed, Gaye; Ellena, Javier (Acta Crystallographica E, 2019)