论文部分内容阅读
The title complex (enH2){NH4[Co(en)3][Mo2O7(C2O4)]}22H2O (C18H70Co2Mo4- N16O24, Mr = 1396.52) was obtained under hydrothermal conditions and its crystal structure has been determined by single-crystal X-ray diffraction. It crystallizes in the monoclinic system, space group P21/c with a = 17.8023(8), b = 7.7527(4), c = 16.9781(4) ? b = 103.878(7), V = 2274.8(2) 3, Dc = 2.039 g/cm3, Z = 2, m(MoKa) = 1.878 mm-1 and F(000) = 1408. The final R = 0.0410 and wR = 0.1070 for 4065 observed reflections with I≥2s(I). The crystal structure is composed of bi- nuclear [Mo2O7(C2O4)]4- anions, complex [Co(en)3]2+ cations, protonated ethylenediamine cations, ammonium cations and crystal water molecules, which are held together into a three-dimensional network via hydrogen-bonding interactions. The binuclear structure of [Mo2O7(C2O4)]4- consist of one MoO4 and one MoO6 octahedra through sharing a bridging oxygen atom, where the oxalate ligand acts as a bidentate ligand coordinating to the octahedral molybdenum atom though two deprotonated corboxylate groups.
The title complex (enH2) {NH4 [Co (en) 3] [Mo2O7 (C2O4)]} 22H2O (C18H70Co2Mo4- N16O24, Mr = 1396.52) was obtained under the hydrothermal conditions and its crystal structure has been determined by single- ray diffraction. It crystallizes in the monoclinic system, space group P21 / c with a = 17.8023 (8), b = 7.7527 (4), c = 16.9781 (4)? b = 103.878 (7), V = 3, Dc = 2.039 g / cm3, Z = 2, m (MoKa) = 1.878 mm-1 and F (000) = 1408. The final R = 0.0410 and wR = 0.1070 for 4065 observed reflections with I ≥ 2s (I) . The crystal structure is composed of bi- nuclear [Mo2O7 (C2O4)] 4-anions, complex [Co (en) 3] 2+ cations, protonated ethylenediamine cations, ammonium cations and crystal water molecules, which are held together into a three -dimensional network via hydrogen-bonding interactions. The binuclear structure of [Mo2O7 (C2O4)] 4-consisting of one MoO4 and one MoO6 octahedra through sharing a bridging oxygen atom, where the oxalate ligand acts as a bidentate ligand coordinating to the octahedral m olybdenum atom though two deprotonated corboxylate groups.