A new lead(Ⅱ) carboxylate-sulfonate has been hydrothermally synthesized and characterized by X-ray single-crystal and elemental analyses. It crystallizes in triclinic, space group Pi, with a = 8.1573(6), b = 9.4...
详细信息
A new lead(Ⅱ) carboxylate-sulfonate has been hydrothermally synthesized and characterized by X-ray single-crystal and elemental analyses. It crystallizes in triclinic, space group Pi, with a = 8.1573(6), b = 9.4663(7), c = 12.7488(9)A, a = 89.2320(10), β = 80.7380(10), γ = 77.9760(10)°, Z = 2, V= 950.10(12) A^3, Mr= 599.57, Dc= 2.096 g/cm^3,μ = 9.032 mm^-1, F(000) = 572, the final R = 0.0412 and wR = 0.1035. It has a ID chain structure, and the Pb(Ⅱ) is six-coordinated. Two PbO6 polyhedra are interconnected via edge-sharing into a two-core unit. Such units are further interconnected by 3-sulfonato-benzoic acids into I D chains which are linked by hydrogen bonds into a layer structure. The 4,4'-bipyridines are located at the interlayer space and link the layers into a supramolecular structure by π-π stacking interactions.
This paper is about two competing supply chains’ structure decision,each of which consists of three level(manufacture-distributor-retailer).Firstly,models about two supply chains competition are established by nonl...
详细信息
This paper is about two competing supply chains’ structure decision,each of which consists of three level(manufacture-distributor-retailer).Firstly,models about two supply chains competition are established by nonlinear programming and game ***,the optimal solution in three scenarios:pure decentralized system,pure centralized system and hybrid system is ***,the Nash equilibrium structure is confirmed based on two decision criterions.
暂无评论