Search

An organic–inorganic hybrid polymeric complex, [BaPt(NCS)4(C20H36O6)(H2O)] n or [[Ba(DC18C6-A)(H2O)][Pt(SCN)4]] n (1) (DC18C6-A = cis-syn-cis-dicyclohexyl-18-crown-6) has been synthesized by the reaction of cis-syn-cis-dicyclohexyl-18-crown-6 with Ba(SCN)2, BaCO3 and H2PtCl4, and characterized by elementary analysis, FT-IR spectra and X-ray single-crystal diffraction. It crystallizes as monoclinic, space group P 21/n with crystallographic data: a = 14.275(6) A, b = 13.165(5) A, c = 18.971(8) A, β = 106.294(6)°, V = 3422(2) A3, Z = 4, D calcd = 1.854 g/cm3, F(000) = 1856, R 1 = 0.0491, wR 2 = 0.0709. The asymmetric unit of complex 1 contains one [Ba(DC18C6-A)(H2O)]2+ complex cation and one [Pt(SCN)4]2− complex anion, which are assembled into an infinite polymeric chain via the bridging SCN groups. The coordinated water molecule gives two different intrachain and interchain hydrogen bonds.

A supramolecular complex [Na(DC18C6-B)][Ni(mnt)2] (1) (DC18C6-B = cis-anti-cis-dicyclohexyl-18-crown-6, isomer B; mnt = maleonitriledithiolate) has been prepared and characterized by elementary analysis, FT-IR spectroscopy and X-ray single crystal diffraction. It crystallizes in triclinic, space group P1 with crystallographic data: a = 7.974(4) A, b = 14.343(7) A, c = 15.559(8) A, α = 96.230(8)∘, β = 100.361(8)∘, γ = 93.849(9)∘, V = 1733.2(15) A3, Z = 2, Dcalcd = 1.408 g/cm3, F(000) = 766, R1 = 0.0491, wR2 = 0.1018. The formula unit contains one [Na(DC18C6-B)]+ complex cation and one [Ni(mnt)2]− complex anion, which are constructed into an infinite chain-like structure through Na–N bonds. The resulting chains crisscross on the [Ni(mnt)2]− complex anions and further assemble into an unusual 3D supramolecular framework via the weak interactions.

A novel crown ether complex [Na(N15C5)]2[Cu(mnt)2] (1) (where N15C5 = 2,3-naphtho-15-crown-5 and mnt = maleonitriledithiolate, [C2S2(CN)2]2−) was synthesized and characterized by elemental analysis, FT-IR spectra, UV-visible spectra and single crystal X-ray diffraction. Structural analysis reveals that the complex 1 consists of two [Na(N15C5)]+ complex cations and one [Cu(mnt)2]2− complex anion and the complex molecules are assembled into a novel 2D network by Na–N interactions. In the network, there are 34-member macrocycles formed by four sodium ions of complex cations and four complex anions through Na–N bonds. In each macrocycle, π–π stacking interactions occurred between two parallel naphthylene moieties of N15C5. It is interesting that the 2D network displays an open-capped wave-like sheet viewed along the crystallographic a axis.

The reaction of 2,3-naphtho-15-crown-5 (N15C5) with Na2[Ni(i-mnt)2] [i-mn = 1,1-dicyanoethylene-2,2-dithiolate] affords the title complex [Na(N15C5)]2[Ni(i-mnt)2] (1), which is characterized by elemental analysis, FT-IR, UV-visible spectra and single crystal X-ray diffraction. 1 crystallizes in the triclinic, space group P $$\bar{1}$$ with a = 8.291(4), b = 12.833(7), c = 12.913(6) A, α = 115.732 (7), β = 105.030(7), γ = 90.912(8)∘, V = 1182.2(10) A3, Z = 1 and R 1(wR 2) = 0.0422(0.1001). The single crystal X-ray analysis shows that the [Na(N15C5)]+ complex cations act as the bridges linking the [Ni(i-mnt)2]2− anions into a 1D infinite chain through Na–N interactions and S⋅sC and S⋅sπ interactions are observed in the chain with the shortest S⋅sC distance of 3.433 A.