TY JOUR TI BINUCLEAR COPPER(II) COMPLEXES BASED ON SPACERED OXYHYDRAZONIC ACIDS KW copper(II) binuclear complexes KW IR spectra KW electron paramagnetic resonance KW ultrathin structure KW exchange interaction. JO Scientific Notes of V.I. Vernadsky Crimean Federal University. Biology. Chemistry AU Goncharuk, D.E. AU Shul'gin, V.F. AU Gusev, A.N. PY 2025 IS 11 PB V.I. Vernadsky Crimean Federal University