Alpha-Fe(2)O(3) nanorods and nanotubes have been synthesized and characterized by high-resolution transmission electron microscopy and X-ray diffraction. By means of different surfactant assistance, the high-quality one-dimensional products were obtained, respectively, with aqueous butanol solution as the solvent and carbamide as the base, giving rise to single-crystalline products at 150 degrees C. The formation mechanism has been presented. Significantly, the magnetic investigations show that the magnetic properties are strongly shape-dependent; i.e., the nanorods have a Morin transition at 166 K from canted antiferromagnetic state to antiferromagnetic state, while the nanotubes exhibit a three-dimensional magnetic ordering above 300 K that has been attributed to the presence of small particles in a few regions of the tubes.

Here, we use a pyridinecarbaldehyde rhodamine 6G hydrazone ligand (L) to synthesize an Fe(II) complex 1 for the search of new fluorescent-spin crossover (SCO) materials. Single-crystal structural determinations suggest that the Fe(II) ion is chelated by two ring-opened ligands (L-o) to form a FeNO coordination environment, and intermolecular π---π contacts of the xanthene groups connect the adjacent molecules to form a supramolecular one-dimensional chain. Magnetic susceptibility measurements on complex 1 show that three-step SCO takes place in the temperature range of 120-350 K, and its desolvated form 1-d exhibits SCO around room temperature ( T↑ = 343 K and T↓ = 303 K) with a wide hysteresis loop of 40 K. Moreover, complex 1-d displays light-induced excited spin-state trapping phenomenon. Intriguingly, the fluorescence intensity of the maximum emission at 560 nm for complex 1-d displays discontinuous variation in the range of 250-400 K, indicative of the occurrence of synergetic fluorescence and SCO.

2,2'-Biphenanthroline (2,2'-biphen) formed from 1,10-phenanthroline when a new two-dimensional layered vanadium oxide metal coordination complex, [(2,2'-biphen)Co]V3O8.5, which contains novel 4,8,10-net sheets, was hydrothermally synthesized.

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Unexpected Assembly of a Unique Cyano-Bridged Three-Dimensional Cu 3 Cr 2 Ferromagnet.-The three-dimensional coordination polymer (III) crystallizes in the monoclinic space group P2/m with Z = 1. The asymmetric unit of the structure is composed of two independent [Cr(CN) 6 ] 3− units and two different types of Cu II centers. Each Cr(1) ion is connected to four [Cu(en)] 2+ groups and each Cr(2) is bonded to four Cu(EtOH) 2 and two Cu(en) moieties. The connectivity of the different building units leads to an unexpected 3D structure. Long-range ferromagnetic ordering is observed below 57 K as expected for a 3D system. (III) is the first Cu II -containing Prussian blue analogue with spontaneous magnetization.

Ion bridge: A unique mixed heterotrimetallic coordination polymer (depicted) with a bridging [Cr(CN)6]3− ion is synthesized by the slow diffusion of a macrocyclic oxamido‐CuII complex, and gadolinium trichloride into potassium hexacyanochromate(III). Intermetallic ferromagnetic coupling is operative within the 2D layer, giving rise to an S=7 ground state. C=black, Cr=pink, Cu=blue, Gd=green, N=violet, O=red.

The design, synthesis, and structural and magnetic properties of the two new bimetallic complexes [Sm(DMF)(4)(H(2)O)(2)Cr(CN)(6)].H(2)O and [Sm(DMF)(2)(H(2)O)(3)Cr(CN)(6)].H(2)O (DMF = N,N-dimethylformamide) are presented. [Sm(DMF)(4)(H(2)O)(2)Cr(CN)(6)].H(2)O was prepared by the reaction between Sm(3+) and [Cr(CN)(6)](3-) in a methanol-DMF solution, while [Sm(DMF)(2)(H(2)O)(3)Cr(CN)(6)].H(2)O was prepared by the reaction between Sm(3+), DMF, and [Cr(CN)(6)](3-) in the molar ratio of 1:2:1 in H(2)O. [Sm(DMF)(4)(H(2)O)(2)Cr(CN)(6)].H(2)O crystallizes in the monoclinic space group of P2(1)/c with a = 13.161(3) A, b = 12.928(3) A, c = 19.174(4) A, beta = 109.82(3) degrees, and Z = 4, while [Sm(DMF)(2)(H(2)O)(3)Cr(CN)(6)].H(2)O is in the triclinic space group P1 with a = 7.7535(1) A, b = 9.4307(3) A, c = 16.2905(5) A, alpha = 94.1590(14) degrees, beta = 100.0597(18) degrees, gamma = 100.9154(18) degrees, and Z = 2. The structure of [Sm(DMF)(4)(H(2)O)(2)Cr(CN)(6)].H(2)O possesses a cyano-bridged one-dimensional (1D) zigzag chain structure with alternating Sm(DMF)(4)(H(2)O)(2) and Cr(CN)(6) moieties. [Sm(DMF)(2)(H(2)O)(3)Cr(CN)(6)].H(2)O consists of cyano-bridged neutral brick wall-like layers in which each [Cr(CN)(6)](3-) unit uses three cyanide groups in the meridional arrangement to connect with three [Sm(DMF)(2)(H(2)O)(3)](3+) units. Each [Sm(DMF)(2)(H(2)O)(3)](3+) unit, in turn, links three [Cr(CN)(6)](3-), generating a flat brick wall-like structure. Magnetic studies on [Sm(DMF)(2)(H(2)O)(3)Cr(CN)(6)].H(2)O showed a magnetic-phase transition temperature below 4.2 K and a coercive field of 100 Oe at 1.85 K, while no long-range magnetic ordering was observed in the 1D complex [Sm(DMF)(4)(H(2)O)(2)Cr(CN)(6)].H(2)O.

The morphology control of β-indium sulfide (β-In 2 S 3 ) microspheres has been achieved through a one-step solvothermal route, by simply adjusting the combinations of two additives, n-butanol and Span80. The products show complex hierarchical structures assembled from nanoscaled building blocks. The morphology evolution can be realized on both outside (surface) and inside (hollow cavity) of the microsphere. Electrochemical measurements have shown that these In 2 S 3 microspheres possess higher initial Li intercalation capacity than that of graphitic materials (372 mAh/g). It will be possible to improve the cyclic performances of the anode materials for their applications to practical batteries.