Gao-Feng Wang

Synthesis and crystal structure of a novel Mn(II) coordination polymer with 3-(4-(1H-benzo[d]imidazol-1-yl)-4-methoxyphenyl)-1-phenylprop-2-en-1-one ligands

Abstract3-(4-(1H-Benzo[d]imidazol-1-yl)-4-methoxyphenyl)-1-phenylprop-2-en-1-one (L1, 1) and its Mn(II) complex, [Mn(L1)2(SCN)2]∞ (2), were synthesized and characterized by elemental analyses, IR spectroscopy and single-crystal X-ray diffraction. The Mn(II) ion in 2 is six-coordinated to four nitrogen atoms of two L1 ligands, two SCN-ligands, and two oxygen atoms of other two L1 ligands to form a distorted octahedral geometry. Therefore, each L1 links Mn ions through the O and N atoms to generate 2D sheet structure.

Synthesis and crystal structure of a copper complex with (E)-2-(4-(1H-1,2,4-triazol-1-yl)benzylidene)-3,4-dihydronaphthalen-1(2H)-one ligand

The title compound, C35H23CuF6N3O5S2 (1), was synthesized by the reaction of Cu(tta)2 and L1, (L1 = (E)-2-(4-(1H-1,2,4-triazol-1-yl)benzylidene)-3,4-dihydronaphthalen-1(2H)-one) in the dichloromethane solution. It crystallizes in the monoclinic, space group P21/c with a = 33.8388(5), b = 9.3874(2), c = 21.8194(4) Å, β = 95.522(2), V = 6898.9(2) Å3, Z = 8, Dx = 1.554 Mg/m3, F(000) = 3272, µ = 0.834 mm–1, R1 = 0.0639, wR2 = 0.1637. The copper(II) ion of 1 is in a distorted square-pyramidal environment with four O atoms of the two tta ligands and one N atom of triazole ligand L1. Single-crystal X-ray diffraction data revealed that the hydrogen bonds, weak C–H···π and π···π interactions in the crystals link the coordination units to form 3D supramolecular structures.

Synthesis and crystal structure of α,β-unsaturated ketone: 3,3′-[1,2-ethanediylbis(oxy-2,1-phenylene)]bis[1-(2-pyridyl)-2-propen-1-one]

The title compound, C30H24N2O4, 3,3′-[1,2-ethanediyl-bis(oxy-2,1-phenylene)]bis[1-(2-pyridyl)-2-propen-1-one] was synthesized and characterized by elemental analysis, FT-IR spectra, 1H NMR, and X-ray single-crystal diffraction. In the molecule, the pyridine plane and the adjacent phenyl plane are almost coplanar with the dihedral angle of 3.07°, while the dihedral angle between the mean planes of the two asymmetric units is 67.56°. The crystal packing is stabilized by weak intermolecular C-H...N and C-H...O hydrogen bonds, C-H...π and π...π stacking interactions.

Structural Characterization of Two Copper Complexes with 2-Arylidenebenzocycloalkanone Ligands

Two copper complexes Cu(tta)2(L1)2 (1) and Cu(tta)2(L2)2 (2) are synthesized and characterized by IR spectroscopy, elemental analysis, and single crystal X-ray diffraction. The copper(II) ion of 1 and 2 is in a distorted octahedral environment with four O atoms of the tta ligands and two N atoms of the heterocyclic ligands. The hydrogen bonds play important roles in stabilizing the structures.

Synthesis and structural characterization of Mn(II) and Cu(II) complexes with bis(4-(1H-imidazol-1-yl)phenyl)methanone ligands

Abstract Two complexes, {Mn(hfac)2(BIPMO)}n (1), {Cu(hfac)2(BIPMO)}n (2) [hfac=1,1,1,5,5,5-hexafluoro-pentane-2,4-dionato(–), BIPMO=bis(4-(1H-imidazol-1-yl)phenyl)methanone], with the V-shaped ligands were synthesized and characterized by infrared spectroscopy, elemental analyses, along with single-crystal X-ray diffraction analyses. The X-ray diffraction studies have shown that the metal ions in 1 and 2 are both six-coordinated to two nitrogen atoms of two BIPMO ligands and four oxygen atoms of two hfac ligands to form a distorted octahedral geometry. Each BIPMO ligand acts as a bridging ligand to link two adjacent metal(II) atoms to form a helical chain in the crystal structure.

Synthesis and structural characterization of two copper complexes with long rigid ligands

Two copper complexes with long rigid ligands, Cu(Tta)2(L1) (I), and Cu(Tta)2(L2) (II), where L1 = (E)-3-(4-(1H-benzo[d]imidazol-1-yl)-(4-phenyl)phenyl)-1-phenylprop-2-en-1-one, L2 = (E)-3-(4-(1H-imidazol-1-yl)phenyl)-1-(4-phenyl)phenyl)prop-2-en-1-one), have been synthesized and characterized. The single-crystal X-ray analysis (CIF files CCDC nos. 1409671 (I) and 1409672 (II)) for complexes I and II demonstrates that each copper ion assumes a distorted square-pyramidal MO4N polyhedron in which four oxygen atoms come from the Tta ligands, and one nitrogen atom comes from the N-donor ligand. Both of the complexes are linked into 3D networks through weak intermolecular interactions.

Syntheses, crystal structures, and characterization of two Mn(II) coordination polymers with bis(4-(1H-imidazol-1-yl)phenyl)methanone ligands

Abstract Two Mn(II) complexes, {[Mn(BIPMO)2Cl2] · 2(H2O)}n (1) and {[Mn(BIPMO)2(SCN)2] · 2(CH3OH)}n (2) (BIPMO = bis(4-(1H-imidazol-1-yl)phenyl)methanone) with V-shaped BIPMO ligands, were synthesized and characterized by IR spectroscopy and elemental analyses along with their single-crystal X-ray diffraction analyses. The Mn(II) ions in 1 and 2 are both six-coordinated to four nitrogen atoms of four BIPMO ligands and two anions (Cl− for 1, and SCN− for 2) to form a distorted octahedral geometry.

Synthesis and structural characterization of two copper(II) complexes constructed from copper(II) thenoyltrifluoroacetonate and the rigid imidazolyl-based ligands

Two copper(II) complexes, Cu(tta)2(L1)2 (1), Cu(tta)2(L2) (2) (where L1 = 4-imidazolylbenzaldehyde, L2 = (E)-3-(4-(1H-imidazol-1-yl)phenyl)-1-(4-methoxyphenyl)prop-2-en-1-one) have been synthesized from the reaction of Cu(tta)2 with L1 and L2 in the methanol medium, respectively. Their structures have been characterized by IR, elemental analyses and single-crystal X-ray diffraction. The copper (II) ion of 1 is in a distorted octahedral environment, in which the donor atoms are provided by two oxygen atoms of the two tta ligands and two nitrogen atoms of L1 ligands, while that of 2 is in a distorted square-pyramidal environment with three O atoms of the two tta ligands and one N atom of imidazole ligand L2 lying at the base.

Structural Characterization of a Cu(I)/Br Complex with Bis(4-(1H-Imidazol-1-Yl)Phenyl)Methanone Ligands

The synthesis of a novel Cu(I) complex with V-shaped bidentate ligands {[Cu(BIPMO)]×[CuBr2]}n where BIPMO = bis(4-(1H-imidazol-1-yl)phenyl)methanone is reported. It is characterized by IR spectroscopy, elemental analysis, and single crystal X-ray diffraction. Copper(I) ions in the complex are in a distorted environment in which donor atoms are provided by the bromide anion and nitrogen atoms of BIPMO ligands, respectively. Infinite anion chains formed by CuX4 (X = Br or N) polyhedra are linked by BIPMO ligands to give rise to layers. Furthermore, the layers are linked into 3D networks through weak intermolecular interactions.

Structural Characterization of Two Copper(II) Bishexafluoroacetylacetonate Complexes with N-Donor Ligands

The synthesis and characterization of two copper complexes, Cu(hfac)2(L1)2 (1) and Cu(hfac)2(L2)2 (2) (L1 = (E)-3-(4-(1H-benzo[d]imidazol-1-yl)phenyl)-1-([1,1′-biphenyl]-4-yl)prop-2-en-1-one, L2 = (E)-3-(4-(1H-imidazol-1-yl)phenyl)-1-phenylprop-2-en-1-one) are reported. These complexes are characterized by elemental analyses, IR and single crystal X-ray diffraction analyses. The Cu(II) ions of 1 and 2 are both in a distorted octahedral environment with four O atoms of the hfac ligands and two N atoms from two L ligands. The supramolecular structures of 1 and 2 are stabilized by hydrogen bonds between the adjacent molecules. In addition, F···F interactions and π–π stacking interactions are also responsible for the stability of the structure in complex 2.