1. mr Mihajlo Zorić, Prirodno-matematički fakultet u Novom Sadu, Serbia
2. ms Marijana Regojević, University of Novi Sad Faculty of Sciences, Serbia
3. dr Marko Rodić, Univerzitet u Novom Sadu, Prirodno-matematički fakultet, Serbia
4. prof Ljiljana Vojinović-Ješić, Univerzitet u Novom Sadu, Prirodno-matematički fakultet, Serbia
5. dr Mirjana Radanović, Univerzitet u Novom Sadu, Prirodno-matematički fakultet, Serbia

Abstract: In the reaction of warm methanolic solutions of the Schiff base 2-(diphenylphosphino)benzaldehyde-aminoguanidine (L) and CuBr₂ in a 1:1 molar ratio, ochre-colored crystals were obtained. The composition was assumed based on the elemental analysis, but te FTIR spectra showed slight differences between L and the obtained complex. Howeve, SC-XRD confirmed that the resulting complex, with the formula [{Cu(L)Br(μ-Br)}₂][Cu₄(L)₂Br₂(μ₂-Br)₂(μ₃-Br)₂]·nMeOH, is a cocrystal composed of two coordination compounds of L, in both of which the ligand coordinates in a monodentate manner through the phosphorus atom. One component of the cocrystal is a dinuclear Cu(I) complex containing two bromide ions acting as bridging ligands. The second component is a tetranuclear Cu(I) complex in which bromide ions exhibit triply bridging coordination to the metal centers. In the free ligand, the plane of the aminoguanidine moiety and that of the adjacent benzene ring form a dihedral angle of 42,76°, whereas in the complex structure they become nearly coplanar, with dihedral angles of 3,24° and 9,66° for the two crystallographically independent complex molecules, respectively.

Ključne reči : Schiff bases complex crystal single-crystal X-ray diffraction

Tematska oblast: SIMPOZIJUM A - Nauka materije, kondenzovane materije i fizika čvrstog stanja

Datum: 15.07.2026.

Contemporary Materials 2026 - Savremeni Materijali

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