Light- and temperature-assisted spin state annealing: accessing the hidden multistability.

Among responsive multistable materials, spin crossover (SCO) systems are of particular interest for stabilizing multiple spin states with various stimulus inputs and physical outputs. Here, in a 2D Hofmann-type coordination polymer, [Fe(isoq){Au(CN)}] (isoq = isoquinoline), a medium-temperature annealing process is introduced after light/temperature stimulation, which accesses the hidden multistability of the spin state. With the combined effort of magnetic, crystallographic and Mössbauer spectral investigation, these distinct spin states are identified and the light- and temperature-assisted transition pathways are clarified.

[Decomposition of different plant litters in Loess Plateau of Northwest China].

Taking the litters of species Hippophae rhamnoides, Medicago sativa, Populus simonii, Robinia pseudoacaci, Salix psammophila, and Stipa bungeana in the Loess Plateau of Northeast China as test objects, and by using mesh bags, this paper studied the dynamic changes of the litters mass, carbon, and nitrogen during decomposition after buried in the field in semiarid region. The litters buried were from one, two, or three of the plant species, and mixed thoroughly with equal proportion of masses. During decomposition, the mass loss rate, total carbon and nitrogen release rates, and total soluble carbon and nitrogen contents of different litters were higher at the early than at the later decomposition stage.

1-(4-Cyano-benz-yl)-3,5-dimethyl-pyridinium bis-(benzene-1,2-dithiol-ato)nickelate(III).

The asymmetric unit of the title compound, (C(15)H(15)N(2))[Ni(C(6)H(4)S(2))(2)], contains half each of two independent centrosymmetric anions and a single cation in a general position. The Ni(III) ions are coordinated by four S atoms in a square-planar geometry. The anions exhibit two packing modes, viz.

Crystal structure of methyl parathion hydrolase from Pseudomonas sp. WBC-3.

Methyl parathion hydrolase (MPH, E.C.3.