Insight into ground-state spin arrangement and bipartite entanglement of the polymeric coordination compound [Dy<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si104.svg" display="inline" id="d1e978"><mml:msub><mml:mrow /><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:math>Cu<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si104.svg" display="inline" id="d1e986"><mml:msub><mml:mrow /><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:math>]<mml:…

The ground-state spin arrangement and the bipartite entanglement within Cu2+-Cu2+ dimers across magnetization process of 4f-3d heterometallic coordination polymer [Dy(hfac)2(CH3OH)2Cu(dmg)(Hdmg)2]n (H2dmg = dimethylglyoxime, Hhfac 1,1,1,5,5,5-hexafluoropentane-2,4-dione) are theoretically examined using symmetric isotropic spin-1/2 Ising–Heisenberg orthogonal-dimer chain. numerical results point to five possible ground states compound with three different degrees quantum Cu2+-Cu2+. Besides standard ferrimagnetic saturated phases without Cu2+ ions, which manifested in low-temperature curve as wide plateaus at non-saturated 16.26μB saturation value 20.82μB, respectively, one also finds an intriguing singlet-like phase just partial two singlet fully entangled dimers. former can be identified very narrow intermediate plateau 9.27μB per unit cell, while latter ones zero 18.54μB. Non-monotonous temperature variations concurrence, through cooper is quantified, temporary thermal activation above non-entangled phases.