Axial ligands of Ru 2 tuning Zn 2+ rearrangement to form a new heterometallic carbonate: Synthesis, structure and magnetic properties

Abstract The self-assembly of Ru 2 (CO 3 ) 4 3− and Zn 2 + in neutral aqueous solution forms heterometallic carbonate ZnHRu 2 (CO 3 ) 4 (H 2 O) 2 ·2H 2 O ( 1 ). X-ray crystallographic analysis and magnetic investigation show that 1 behaves as 2D antiferromagnetic layers. It is different from those light transitional metal d 1–9 centers (Mn, Co, and Ni), which merely exhibit octahedral MO 6 environment and trans - or cis -mode link Ru 2 dimers to form 2D and 3D frameworks, the production of 1 shows Zn 2 + adopting tetrahedral environment. Compared with Zn 2 + adopting octahedral environment in KZn(H 2 O) 6 [Zn(H 2 O) 2 Ru 2 (CO 3 ) 4 Cl 2 ]·4H 2 O, it proves that the axial position ligands (L) of Ru 2 dimers account for the tetrahedral ZnO 4 (L = H 2 O) or octahedral ZnO 6 (L = Cl − ) environments, and this is also due to the d 10 electronic configuration of Zn 2 + with the equivalent crystal field energy of the tetrahedral ZnO 4 and octahedral ZnO 6 symmetry.