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A novel 3D two-fold interpenetrated coordination polymer, [Co2(hfipbb)2(dps)(H2O)]n (1) [H2hfipbb = 4,4′-(hexafluoroisopropylidene) bis(benzoic acid), dps = 4,4′-dipyridylsulfide], has been synthesized by solvothermal reaction of Co(OAc)2·4H2O, dps and H2hfipbb in the presence of KOH, and characterized by elemental analysis, IR spectra, PXRD, and single-crystal X-ray diffraction. The structure determination reveals that 1 exhibits a 3D two-fold interpenetrated (3, 4)-connected network with (83)2(85·10) topology. In addition, the thermogravimetric analysis and magnetic behavior of 1 were also studied. A novel 3D two-fold interpenetrated coordination polymer, [Co2(hfipbb)2(dps) (H2O)]n (1) has been synthesized and characterized by elemental analysis, IR spectra, PXRD, and single-crystal X-ray diffraction. Furthermore, thermogravimetric analysis and the magnetic properties of complex 1 were also studied.

Two new coordination polymers, [Zn(H2btc)(4,4′-bpy)2] n (1) and {[Cd(H2btc) (terpy)] · H2O} n (2) (H4btc = biphenyl-2,2′,4,4′-tetracarboxylic acid, 4,4′-bpy = 4,4′-bipyridine, terpy = terpyridine), have been synthesized under hydrothermal conditions and characterized by elemental analysis, IR spectra, and single-crystal X-ray diffraction. Complexes 1 and 2 are 1-D chains linked through partially deprotonated H4btc. The adjacent 1-D chains of 1 are further formed into 2-D supramolecular architecture through inter-chain N–H···O hydrogen bonds. In contrast, due to a different auxiliary ligand, the 1-D chains of 2 are further extended into 3-D supramolecular framework through inter-chain O–H···O hydrogen bonds. Thermal stabilities and luminescence of 1 and 2 were also studied.

A series of 2D Ln-organic coordination frameworks (Ln = Sm3+ for 1, Eu3+ for 2, Tb3+ for 3, and Ho3+ for 4) with (4,6)-connected (44.52)(44.5.6)(44.54.66.7) topology has been constructed, in which 1D zigzag chains and 2D (4,4) networks intertwine mutually into the unusual 1D and 2D mixed self-weaving patterns. Interestingly, due to the lanthanide contraction effect, the 9-coordinated geometries of the Ln(III) ions gradually transform from triangle tetrakaidecahedron (Sm3+ and Eu3+), to a three-capped triangle prism (Eu3+ and Tb3+), and then to a single-capped anti-square prism (Ho3+).

A novel coordination polymer of CuII with flexible ligands, namely, [Cu 2 (pda) 2 (phen) 2 (H 2 O) 2 ]·6H 2 O (1) (H2pda = 1,3-phenylenediacetic acid, phen = 1,10-phenanthroline), was synthesized by hydrothermal reactions and characterized by single-crystal X-ray diffraction, thermogravimetric analyses, elemental analysis and IR spectroscopy. In complex 1, the CuII ions are linked by pda ligands to form 1D helical chains. The adjacent chains are related by the π–π stacking interactions and exhibit opposite chirality, which result in extended 2D heterochiral helical-layers. Furthermore, the 2D helical-layers are assembled into 3D supramolecular edifices through heterochiral helical hydrogen bonding. In addition, the thermal stability and magnetic properties of 1 are reported.

Two novel lanthanide complexes with the formulas [Ln2(tda)3(H2O)2]n [Ln=Sm (1), Dy (2), H2tda=thiodiacetic acid] have been prepared by using the corresponding lanthanide salt and H2tda under hydrothermal conditions. Single crystal X-ray diffraction studies show that the two compounds are isostructural and present a 2D network based on the 1D metallic chain, in which an edge-sharing dinuclear polyhedral [Ln2O16] was found to be the building unit of the 1D chains. Interestingly, in the network, the tda ligands exhibit two different coordination modes, including the mode La: bis(syn,syn-bridging bidentate, chelating-bridging tridentate), and mode Lb: bis(chelating- bridging tridentate, syn, anti-bridging bidentate). Furthermore, through the tda ligand in modes La and Lb, the 1D metallic chains are cross-linked to generate a 2D network structure with (3,4,5,6)-connected (47·68)(44·66)(45·6)- (46)(43) topology. Photoluminescence measurements indicate that the dysprosium complex is yellow emitters, and the samarium complex shows salmon pink light emission in the solid state at room temperature.

Six 3D lanthanide(III)-metal-organic frameworks (MOFs) through multidentate 3,5-bis(4’-carboxy-phenyl)-1,2,4-triazole (H2BCPT), acetic acid (HOAc), and corresponding trivalent rare earth chloride, {[Ln(BCPT)(OAc)(H2O)]·(H2O)}n (Ln = Nd3+ (1); Sm3+ (2), Gd3+ (3), Tb3+ (4), Ho3+ (5), Yb3+ (6)), have been synthesized. MOFs 1-6 were characterized via FT-IR spectroscopy, elemental analysis, X-ray single-crystal diffraction, thermal analysis, and fluorescence. MOFs 1-6 are isomorphous, which can be described as a 3D construction containing a dinuclear cluster [Tb2(CO2)2(O)2]. The 3D structure with (4,4) topologies have been extended through BCPT2- using μ4-kO;kO;kO;kO coordination modes. Solid-state luminescence of 1-4 and 6 show the characteristic bands of Nd3+, Sm3+, Tb3+ and Yb3+ from visible to near-infrared spectral regions.

C36H45N3O24S3Tb, triclinic, P1¯ (no. 2), a = 10.0869(7) Å, b = 13.7894(8) Å, c = 17.6966(8) Å, α = 69.366(4)°, β = 74.359(5)°, γ = 85.267(6)°, V = 2218.0 Å3, Z = 2, Rgt(F) = 0.0369, wRref(F2) = 0.0817, T = 273 K.

Desert steppe is very vulnerable to climate change. The herders caring for their livestock in such a natural environment have to face the challenges of rapid climate change. In this paper, a household-level questionnaire was conducted in the Suniteyou District of Inner Mongolia, China, aimed to analyze the herders' perceptions and adaptation strategies to climate change, extreme climate events in particular. In this Steppe where precipitation is rare and meteorological disasters are frequent, drought is the main extreme climate event with the broadest affecting area, the highest affecting degree, and the greatest frequency. The sensitivity of the herders to drought is far higher than that to other extreme climate events, and also, the perceptions to drought induce the herders having deep perceptions to the extreme climate events such as strong wing, dust storm, and heavy snow. Relative to the perceptions to long-term climate change, the perceptions to short-term climate change are more deep and precise. The herders can estimate the long-term climate change trend according to their perceptions to the latest 10 years climate change. They attribute the poor livestock health and the reduced forage yield greatly to climate change. Yet, the herders are inexperienced in implementing efficient adaptation strategies. Generally, their adaptation measures are quite simplex and rather passive.

In the title compound, [Zn(C(12)H(8)NO(2))(2)](n), the Zn(2+) cation is coordinated by a pair of carboxyl-ate O atoms as well as two pyridyl N atoms to afford a distorted tetra-hedral environment. Adjacent Zn(2+) cations, with a separation of 8.807 (2) Å, are linked by two 3-(3-pyrid-yl)benzoate ligand bridges, generating an infinite ribbon extending parallel to [001].

The normal-inverse model arises as a normal variance-mean mixture with an inverse Gaussian mixing model. The resulting model, it is very complicated to obtain the influence measures based on the tradition method. In the present paper, several diagnostic measures for outlier data mining are obtained based on the conditional expectation of the complete-data log-likelihood function based on the EM algorithm. An example for which we apply the diagnosis methods is given as illustration.

In the title compound, [Co(C14H8O5)(C12H8N2)]n, the CoIIatom is six-coordinated in a distorted octahedral coordination geometry by four O atoms from two chelating carboxylate groups from different 2,4′-oxydibenzoate anions and by two N atoms from a 1,10-phenanthroline (phen) ligand. The two benzene rings of the 2,4′-oxydibenzoate ligand form a dihedral angle of 77.14 (16)°. Adjacent CoIIatoms are bridged by 2,4′-oxydibenzoate anions to form a helical chain that propagates along theb-axis direction. Neighboring chains are further assembled by intermolecular π–π stacking interactions between inversion-related phen ligands [centroid-to-centroid distance = 4.0869 (8) Å] to form a two-dimensional supramolecular architecture.

In the title compound, [Zn(C12H8NO2)2]n, the Zn2+ cation is coordinated by a pair of carboxyl­ate O atoms as well as two pyridyl N atoms to afford a distorted tetra­hedral environment. Adjacent Zn2+ cations, with a separation of 8.807 (2) A, are linked by two 3-(3-pyrid­yl)benzoate ligand bridges, generating an infinite ribbon extending parallel to [001].

In the title compound, C(13)H(14)N(2)·C(14)H(10)O(5), a 1:1 cocrystal of 1,3-di-4-pyridylpropane (bpp) and 4,4'-oxydibenzoic acid (H(2)oba), the dihedral angle between the two benzene rings of the flexible H(2)oba mol-ecule is 57.07 (1)°; the two pyridine rings of bpp make a dihedral angle of 27.52 (1)°. Strong inter-molecular O-H⋯N hydrogen bonds link the mol-ecules into chains, which are then linked into a three-dimensional network through inter-molecular C-H⋯O and π-π stacking inter-actions [centroid-centroid distance = 3.7838 (3) Å].