Coordination polymers of VIV—MII (MII = Mn, Co, Ni, Cd) with ethylmalonate anions.

A series of heterometallic 1D coordination polymers {[M^II(V^IVO)(Etmal)₂(H₂O)₅] • 2 H₂O}_n (M^II = Mn (1), Co (2), Ni (3), Cd (4)) were synthesized. These compounds are composed of oxovanadium(iv)-containing mononuclear anionic units [V^IVO(Etmal)₂]²⁻ linked by d-metal aqua cations. The X-ray diffraction study showed that the nature of the starting d-metal sulfate in the reactions with VOSO₄ • 3 H₂O and barium salt of ethylmalonic acid (H₂Etmal = C₃H₆(CO₂H)₂) has no effect on the structure of the resulting coordination polymer. The magnetic isolation of paramagnetic centers in all the synthesized compounds was confirmed by magnetochemical measurements. [ABSTRACT FROM AUTHOR]