Aqua­bis­(4-fluoro­benzoato-κO)bis­(nicotinamide-κN 1)copper(II) nicotinamide hemisolvate trihydrate

The asymmetric unit of the title compound, [Cu(C7H4FO2)2(C6H6N2O)2(H2O)]·0.5C6H6N2O·3H2O, contains two aqua­bis­(4-fluoro­benzoato)bis­(nicotinamide)­copper(II) mol­ecules, one nicotinamide solvent mol­ecule and six water mol­ecules. The CuII ion is coordinated by two O atoms from two 4-fluoro­benzoate ligands, two N atoms from two nicotinamide ligands and one water O atom in a distorted square-pyramidal geometry. In the crystal, O—H⋯O, O—H⋯N and N—H⋯O hydrogen bonds consolidate the crystal packing, which also exhibits π–π inter­actions between the aromatic rings [centroid–centroid distances 3.692 (2)–3.794 (2) Å]

Di-μ-nicotinamide-κ2 N 1:O;κ2 O:N 1-bis­[aqua­bis­(4-bromo­benzoato)-κO;κ2 O,O′-manganese(II)]

In the centrosymmetric dinuclear title compound, [Mn2(C7H4BrO2)4(C6H6N2O)2(H2O)2], the MnII atom is coordinated by one N atom from one bridging nicotinamide ligand and one O atom from another symmetry-related bridging nicotinamide ligand, three O atoms from two 4-bromo­benzoate ligands and one water mol­ecule in a distorted octa­hedral geometry. The dihedral angles between the carboxyl­ate groups and the adjacent benzene rings are 10.89 (16) and 8.4 (2)°, while the benzene rings are oriented at a dihedral angle of 6.09 (13)°. Inter­molecular O—H⋯O, N—H⋯O and weak C—H⋯O hydrogen bonds link the mol­ecules into a three-dimensional network. π–π inter­actions, indicated by short centroid–centroid distances [3.845 (2) Å between the benzene rings, 3.650 (2) Å between the pyridine rings and 3.700 (3) Å between the benzene and pyridine rings] further stabilize the structure

Bis­(4-fluoro­benzoato)-κ2 O,O′;κO-(4-fluoro­benzoic acid-κO)bis­(nico­tinamide-κN 1)copper(II)

In the title CuII complex, [Cu(C7H4FO2)2(C7H5FO2)(C6H6N2O)2], the CuII cation is coordinated by two N atoms of two nicotinamide (NA) ligands, and by four O atoms from two 4-fluoro­benzoate (PFB) anions and one 4-fluoro­benzoic acid (PFBA) mol­ecule, in a distorted octa­hedral geometry. In the mol­ecule, two Cu—O bond lengths are significantly longer than the other two. The dihedral angles between the carboxyl­ate groups and the adjacent benzene rings are 11.08 (14), 7.62 (13) and 5.73 (11)°, while the benzene rings are oriented at dihedral angles of 15.62 (6), 33.71 (8) and 26.60 (8)°. In the crystal structure, extensive N—H⋯O, C—H⋯F and C—H⋯O hydrogen bonds link the mol­ecules into a three-dimensional network. π–π contacts between the benzene rings [centroid-to-centroid distances = 3.5517 (15), 3.8456 (14) and 3.9265 (13) Å] further stabilize the crystal structure

Poly[[diaqua­manganese(II)]-bis­(μ-4-fluoro­benzoato-κ2 O:O′)]

In the crystal structure of the title complex, [Mn(C7H4FO2)2(H2O)2]n, the MnII atom is located on an inversion centre. It is coordinated by two water mol­ecules in the apical directions and four 4-fluoro­benzoate (PFB) anions, bridging the symmetry related Mn atoms in the basal plane to form an infinite two-dimensional polymeric structure parallel to (100). The four O atoms of the PFB anions around the MnII atom form a slightly distorted square-planar arrangement, while the slightly distorted octa­hedral coordination is completed by the two O atoms of the water mol­ecules. The dihedral angle between the carboxyl­ate group and the adjacent benzene ring is 27.29 (16)°. The O—H⋯O hydrogen bonds further connect the manganese-carboxyl­ate units. π–π contacts between the benzene rings [centroid-centroid distance = 3.6894 (15) Å] further stabilize the crystal structure

Bis(4-ethyl­benzoato-κO)bis­(nicotin­amide-κN 1)zinc(II)

The title ZnII complex, [Zn(C9H9O2)2(C6H6N2O)2], contains two 4-ethyl­benzoate and two nicotinamide monodentate ligands, leading to a distorted tetrahedral coordination of the ZnII ion. The dihedral angles between the carboxyl­ate groups and the adjacent benzene rings are 10.33 (13) and 2.38 (11)°, while opposite pyridine and benzene rings are oriented at dihedral angles of 68.46 (5) and 81.09 (6)°. In the crystal, inter­molecular N—H⋯O hydrogen bonds link the mol­ecules, forming a three-dimensional network. C—H⋯O inter­actions also occur as well as two weak C—H⋯π inter­actions involving the benzene rings

Diaqua­bis­(N,N-diethyl­nicotinamide-κN 1)bis­(4-ethyl­benzoato-κO)cobalt(II)

The title CoII complex, [Co(C9H9O2)2(C10H14N2O)2(H2O)2], contains two 4-ethyl­benzoate (PEB), two monodentate diethyl­nicotinamide (DENA) ligands and two water mol­ecules. The four O atoms in the equatorial plane around the CoII ion form a slightly distorted square-planar arrangement, while the slightly distorted octa­hedral coordination is completed by the two N atoms of the DENA ligands in the axial positions. Intra­molecular O—H⋯O hydrogen bonds link the water mol­ecules to the carboxyl­ate groups. The dihedral angles between the carboxyl­ate groups and the adjacent benzene rings are 4.52 (18) and 4.56 (18)°, while the pyridine rings and the benzene rings are oriented at dihedral angles of 7.76 (10) and 5.67 (13)°. In the crystal, inter­molecular O—H⋯O hydrogen bonds link the mol­ecules into chains propagating along [010]. C—H⋯O inter­actions and a π–π contact between the pyridine rings [centroid–centroid distance = 3.476 (2) Å] are also observed

Diaqua­bis­(4-bromo­benzoato-κO)bis­(nicotinamide-κN 1)copper(II)

The asymmetric unit of the title mononuclear CuII complex, [Cu(C7H4BrO2)2(C6H6N2O)2(H2O)2], contains one half-mol­ecule, the CuII atom being located on an inversion center. The unit cell contains two nicotinamide (NA), two 4-bromo­benzoate (PBB) ligands and two coordinated water mol­ecules. The four O atoms in the equatorial plane around the CuII ion form a slightly distorted square-planar arrangement, while the slightly distorted octa­hedral coordination is completed by the two N atoms of the NA ligands in the axial positions. The dihedral angle between the carboxyl­ate group and the adjacent benzene ring is 22.17 (16)°, while the pyridine ring and the benzene ring are oriented at a dihedral angle of 82.80 (6)°. In the crystal, N—H⋯O, O—H⋯O and C—H⋯O hydrogen bonds link the mol­ecules into a three-dimensional network. A weak C—H⋯π inter­action is also observed

Diaqua­bis­(4-bromo­benzoato-κO)bis­(N,N-diethyl­nicotinamide-κN 1)manganese(II)

In the crystal structure of the title MnII complex, [Mn(C7H4BrO2)2(C10H14N2O)2(H2O)2], the MnII cation is located on an inversion center and coordinated by two diethyl­nicotinamide (DENA) ligands, two 4-bromo­benzoate (PBB) anions and two water mol­ecules in a distorted octa­hedral geometry. The dihedral angle between the carboxyl­ate group and the adjacent benzene ring is 3.25 (14)°. In the mol­ecule, the pyridine ring and the benzene ring are oriented at a dihedral angle of 77.24 (5)°. In the crystal, inter­molecular C—H⋯O hydrogen bonds link the mol­ecules into a two-dimensional network. Weak inter­molecular C—H⋯O hydrogen bonds and π–π inter­actions between the pyridine rings of neighbouring mol­ecules [centroid–centroid distance = 3.537 (1) Å] further consolidate the crystal packing

trans-Diaqua­bis­(4-fluoro­benzoato-κO)bis­(nicotinamide-κN 1)nickel(II)

In the mononuclear NiII title complex, [Ni(C7H4FO2)2(C6H6N2O)2(H2O)2], the NiII atom, located on an inversion center, is coordinated by two nicotinamide and two 4-fluoro­benzoate ligands and two water mol­ecules in a distorted N2O4 octa­hedral geometry. The dihedral angle between the carboxyl­ate group and the adjacent benzene ring is 8.95 (8)°, while the pyridine ring and the benzene ring are oriented at a dihedral angle of 75.01 (7)°. The water mol­ecule links the adjacent carboxyl­ate O atom via an intra­molecular O—H⋯O hydrogen bond. In the crystal, O—H⋯O, N—H⋯O, C—H⋯O and C—H⋯F hydrogen bonds link the mol­ecules into a three-dimensional network. π–π stacking between parallel pyridine rings [centroid–centroid distance = 3.7287 (11) Å] is also observed

Synthesis and characterization of mix-ligand complexes of Metal(II) 4- Ethylbenzoates

Bu çalışmada Cu(II), Co(II), Ni(II), Pb(II), Mn(II) ve Zn(II) 4-etilbenzoatların nikotinamid/N,N’- dietilnikotinamid ligandları ile kompleksleri sentezlenmiştir. Komplekslerin yapılarını aydınlatmak için elementel analiz, IR, UV-Vis, 1 H ve 13 C NMR spektroskopisi yöntemleri kullanılmıştır. Sentezlenen komplekslerin termik özelliklerine bakıldığında su ligandı içeren komplekslerde ilk bozunma basamağında su molekülleri yapıdan ayrılmaktadır. Devam eden basamaklarda organik ligandlar tamamen veya kısmen bozunmaya uğramaktadır. Komplekslerin nihai termal bozunma ürünleri uygun gelen metal veya metal oksittir.In this study, metal complexes of 4-ethylbenzoate containing nicotinamide and N,N’diethylnicotinamide were synthesized. Elemental analysis, IR, UV-VIS, 1 H and 13 C NMR Spectroscopy methods were used for the elucidation of the structures of complexes. The thermal behaviors of complexes were determined by simultaneous thermal analysis techniques. The thermal decomposition of hydrated complexes started with dehydration process. Organic ligands were partially or fully degraded at continued steps. The final products of thermal decomposition have been determined as metal or metal oxides