We investigated the coordination ability of the bis(124-triazolyl) module tr(2)pr = 13-bis(124-triazol-4-yl)propane toward the engineering of solid-state structures of copper polyoxomolybdates utilizing a composition space diagram approach. Different binding modes of the ligand including [N-N]-bridging and N-terminal coordination and the existence of favorable conformation forms (anti/anti gauche/anti and gauche/gauche) resulted in varieties of mixed metal Cu-I/Mo-VI and Cu-II/Mo-VI coordination polymers prepared under hydrothermal conditions. The composition space analysis employed was aimed at both the development of new coordination solids and their crystallization fields through systematic changes of the reagent ratios [copper(II) and molybdenum(VI) oxide precursors and the tr(2)pr ligand]. Nine coordination compounds were synthesized and structurally characterized. The diverse coordination architectures of the compounds are composed of cationic fragments such as [Cu-3(II)(mu(2)-OH)(2)(mu(2)-tr)(2)](4+) [Cu-3(II)(mu(2)-tr)(6)](6+) [Cu-2(II)(mu(2)-tr)(3)](4+) etc. connected to polymeric arrays by anionic species (molybdate MoO42- isomeric alpha- delta- and beta-octamolybdates {Mo8O26}(4-) or {Mo8O28H2}(6-)). The inorganic copper(III)/molybdenum(VI) oxide matrix itself forms discrete or low-dimensional subtopological motifs (0D 1D or 2D) while the organic spacers interconnect them into higher-dimensional networks. The 3D coordination hybrids show moderate thermal stability up to 230-250 degrees C while for the 2D compounds the stability of the framework is distinctly lower (similar to 190 degrees C). The magnetic properties of the most representative samples were investigated. The magnetic interactions were rationalized in terms of analyzing the planes of the magnetic orbitals.