The first example of 3d-4f-heterometallic carboxylate complex containing phosphine ligand
The interaction of heterometallic compounds [Co2La(Piv)6(NO3)(MeCN)2] (1) and [Co2La(Piv)6(NO3)(Py)2] (2) (Piv‐pivalate, Py‐pyridine) with triphenylphosphine was studied. It was shown that labile terminal molecules of MeCN in complex 1 were substituted by triphenylphosphine that led to the formation of complex [Co2La(Piv)6(NO3)(Ph3P)2] (3), whereas compound 2 in similar conditions did not undergo ligand substitution reaction. Molecular structure of compound 3 was determined by means single crystal X‐ray diffraction. The temperature dependence of the magnetic susceptibility of 3 was simulated with a model which implied only zero‐field splitting of Co(II) ions. It was found that ZFS parameters (D) for Co(II) ions in 3 were close to D value in 1. The field‐induced slow magnetic relaxation was observed for compound 3 on the result of magnetic susceptibility measurements in alternating current magnetic field.
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