Dinuclear Nitrato Coordination Compounds with Bis(3,5‐tert‐butylpyrazol‐1‐yl)­acetate

摘要: Two dinuclear centrosymmetric coordination compounds with the bis(3,5-di-tert-butylpyrazol-1-yl)acetic acid anion (L– = bdtbpza), namely, violet [Co(bdtbpza)(NO3)]2 (1) and turquoise [Cu(bdtbpza)(NO3)]2 (2), are reported. Around each metal(II) ion, L– ligand is κ3-N,N,O coordinated, M–O bonds significantly longer than both M–N bonds. The sphere completed by short nitrato to a that already coordinated adjacent intra-dinuclear metal center. Therefore, has total number of four but different carboxylate modes, κ4-N,N,O,O (1,1) in 1 κ4-N,N,O,O′ (1,3) 2 for C(1)–O–C(2) group. Thus, spheres MO2N2O cases, though distorted trigonal bipyramidal, whereas square pyramidal. Antiferromagnetic (AFM) coupling (17 cm–1) seen only 1, best fit was obtained consideration spin–orbit along zero-field splitting owing exchange anisotropy. new species might be alternatives previously reported mimics enzyme active sites.