New Co(II) and Mn(II) complexes with 4'-substituted 2,2':6',2''-terpyridine ligands

Abstract

Three Co(II) complexes [Co(meophtpy)2](ClO4)2×2CH3CN (1), [Co(nh2phtpy)2](ClO4)2·2CH3CN (2), [Co(ftpy)2](ClO4)2·2CH3CN (3) and three Mn(II) complexes [Mn(nme2phtpy)2]·(ClO4)2·2CH3CN (4), [Mn(ftpy)2](ClO4)2·CH3CN (5), [Mn(meophtpy)(H2O)(NO3)2]·CH3CN (6) (meophtpy, 4'-(4-methoxyphenyl)-2,2':6',2''-terpyridine; nh2phtpy, 4'-(4-aminophenyl)-2,2':6',2''-terpyridine; ftpy, 4'-(furan-2-yl)-2,2':6',2''-terpyridine; nme2phtpy, 4'-(4-(N,N-di­methylamino)phenyl)-2,2':6',2''-terpyridine) are synthesized and their structures are determined by single crystal X-ray diffraction. Crystal data for 1 are: monoclinic, space group C2/c, a = 14.4781(5), b = 16.2221(7), c = 21.3617(9) Å, and Z = 4. For 2: monoclinic, space group C2/c, a = 14.554(6), b = 15.239(6), c = 21.754(9) Å, and Z = 4. For 3: monoclinic, space group C2/c, a = 14.5285(16), b = 15.3234(16), c = 21.154(2) Å, and Z = 4. For 4: triclinic, space group P-1, a = 12.132(5), b = 12.536(5), c =17.840(10) Å, and Z = 2. For 5: triclinic, space group P-1, a = 9.993(10), b = 13.950(13), c = 15.511(15) Å, and Z = 2. For 6: monoclinic, space group Pc, a = 12.402(7), b = 12.919(8), c = 7.893(5) Å, and Z = 2. In complexes 1—5, Co(II) or Mn(II) ions are coordinated by six N atoms from two terpyridine moieties. In complex 6 the Mn(II) atom coordinates only one terpyridine ligand. All these complexes are linked by hydrogen bonds and face-to-face π—π interactions into three-dimensional networks. In complexes 4—6 the available solvent areas imply their potential applications in gas adsorption or catalysis.