2,2′-(p-Phenyl­enedithio)diacetic acid

The complete molecule of the title compound, C10H10O4S2, is generated by a crystallographic inversion centre. In the crystal, mol­ecules are linked into a one-dimensional chain by inter­molecular O—H⋯O hydrogen bonds

2-(Carboxy­methyl­sulfan­yl)pyridine-3-carboxylic acid monohydrate

The title compound, C8H7NO4S·H2O, was obtained by reaction of 2-mercaptopyridine-3-carboxylic acid with chloro­acetic acid. In the mol­ecular structure, the dihedral angle between the two least-squares planes defined by the pyridine ring and the carb­oxy group is 8.32 (9)°. The carboxy­methyl­sulfanyl group makes a torsion angle of 82.64 (12)° with the pyridine ring. An intra­molecular O—H⋯N hydrogen bond between the acidic function of the carboxy­methyl­sulfanyl group and the pyridine N atom stabilizes the conformation, whereas inter­molecular O—H⋯O hydrogen bonding with the uncoordinated water mol­ecules is responsible for packing of the structure, leading to chains propagating in [001]

Instability and Momentum Bifurcation of molecular BEC in Exotic Dispersion with Shaken Lattice

We place a molecular Bose-Einstein condensate in a 1D shaken lattice with a Floquet-engineered dispersion, and observe the dynamics in both position and momentum space. At the initial condition of zero momentum, our engineered dispersion is inverted, and therefore unstable. We observe that the condensate is destabilized by the lattice shaking as expected, but rather than decaying incoherently or producing jets, as in other unstable condensates, under our conditions the condensate bifurcates into two portions in momentum space, with each portion subsequently following semi-classical trajectories that suffer minimal spreading in momentum space as they evolve. We can model the evolution with a Gross-Pitaevskii equation, which suggests the initial bifurcation is facilitate by a nearly linear "inverted V"-shaped dispersion at the zone center, while the lack of spreading in momentum space is facilitated by interactions, as in a soliton. We propose that this relatively clean bifurcation in momentum space has applications for counter-diabatic preparation of exotic ground states in many-body quantum simulation schemes

Poly[[bis­(2,2-bipyridine)­bis­[μ6-5-(carboxyl­atometh­oxy)benzene-1,3-dicarboxyl­ato]trimanganese(II)] monohydrate]

The title compound, {[Mn3(C10H5O7)2(C10H8N2)2]·H2O}n, was synthesized under hydro­thermal conditions. Six carboxyl­ate groups of six 5-(carboxyl­atometh­oxy)benzene-1,3-dicarboxyl­ate anions (OABDC3−) join three MnII ions into a trinuclear centrosymmetric [Mn3(μ2-COO)6] unit with one Mn site situated on a centre of inversion. The latter MnII ion exhibits a distorted MnO6 coordination, whereas the other MnII ion has a trigonal–bipyramidal MnN2O3 coordination environment resulting from three carboxylate O atoms and the two N atoms of the bipyridine ligand. Adjacent units are linked to each other by OABDC3− ligands into a layer parallel to (010). Within the layer, O—H⋯O hydrogen-bonding inter­actions involving the uncoordinated and half-occupied water mol­ecule and the free carboxyl­ate O atoms are observed. The layers stack along [010], constructing a three-dimensional structure through π–π inter­actions between adjacent pyridine rings, with a centroid–centroid distance of 3.473 (5) Å

Aqua­chlorido{1-[1-(4-hydroxy­phen­yl)-1H-tetra­zol-5-ylsulfan­yl]acetato}(methanol)(1,10-phenanthroline)manganese(II)

The title complex, [Mn(C9H7N4O3S)Cl(C12H8N2)(CH4O)(H2O)], contains an MnII ion six-coordinated by one O atom from the 2-[1-(4-hydroxy­phen­yl)-1H-tetra­zol-5-ylsulfan­yl]­acetate ligand, two N atoms from a chelating 1,10-phenanthroline ligand, one O atom from a methanol mol­ecule, one Cl atom and one water mol­ecule in a distorted octa­hedral coordination geometry. The existence of O—H⋯Cl, O—H⋯N and O—H⋯O hydrogen bonds further produces a two-dimensional structure