Abstract

The bulky phosphonate ligands CarbmPO3H2 (((9H-carbazol-9-yl)methyl)phosphonic acid) and CarbePO3H2 ((2-(9H-carbazol-9-yl)ethyl)phosphonic acid) were employed to construct cages [Ni9{(py)2CO2}2(CarbmPO3)4(tBuCO2)6(tBuCO2H)2(CH3CN)2] 1 and [Ni11{(py)2CO2}2(CarbePO3)4(tBuCO2)10(CH3CN)2] 2 with (py)2CO (di-2-pyridyl ketone) and Hpiv (pivalic acid) as coligands under solvothermal conditions. The metallic cores of cages 1 and 2 display vertex-sharing tetragonal pyramidal and tetra-capped octahedral arrangements, respectively. Magnetic property measurements indicate the coexistence of antiferromagnetic and ferromagnetic interactions between nickel centers for both cages.

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