Poly[[μ2-(1Z,N′E)-2-(1,3-benzothia­zol-2-ylsulfan­yl)-N′-(2-oxidobenzyl­idene-κ2 O:O)acetohydrazidato-κ2 O,N′](pyridine-κN)copper(II)]

In the title compound, [Cu(C16H11N3O2S2)(C5H5N)]n, the CuII atom displays a square-pyramidal CuN2O3 coordination geometry with strong elongation in the vertex direction. The hydrazone mol­ecule is coordinated to the CuII atom in a tridentate manner in the enolic form, creating five- and six-membered chelate metallarings. The pyridine mol­ecule completes the square-planar base of the copper coordination environment. The crystal structure displays zigzag polymeric Cu—O—Cu chains along [001]. Several weak π–π inter­actions between benzothia­zole rings were found in the same direction [centroid–centroid distances = 3.7484 (16), 3.7483 (16), 3.6731 (17) and 3.7649 (17) Å]

trans-Bis[(1-ammonio­pentane-1,1-di­yl)diphospho­nato-κ2 O,O′]diaqua­copper(II)

In the title compound, [Cu(C5H14NO6P2)2(H2O)2], the CuII atom occupies a special position on an inversion centre. It exhibits a distorted octa­hedral coordination environment consisting of two O,O′-bidentate (1-ammonio­pentane-1,1-di­yl)diphospho­nate anions in the equatorial plane and two trans water mol­ecules located in axial positions. The ligand mol­ecules are coordinated to the CuII atom in their zwitterionic form via two O atoms from different phospho­nate groups, creating two six–membered chelate rings with a screw-boat conformation. The CuO6 coordination polyhedron is strongly elongated in the axial direction with 0.6 Å longer bonds than those in the equatorial plane. Intra­molecular N—H⋯O hydrogen bonding helps to stabilize the mol­ecular configuration. The presence of supra­molecular —PO(OH)⋯O(OH)P— units parallel to (100) and other O—H⋯O and N—H⋯O hydrogen bonds establish the three-dimensional set-up

{[1-(2-Amino­ethyl­amino)-1-methyl­ethyl]phospho­nato-κ3 N,N′,O}chloridopalladium(II) monohydrate

In the title compound, [Pd(C5H14N2O3P)Cl]·H2O, the Pd(II) atom shows a slightly distorted square-planar geometry and forms two five-membered metallacycles, which both exhibit half-chair conformations. The crystal structure consists of layers propogating in the [100] direction which are connected into a three-dimensional network by strong N—H⋯Cl, N—H⋯O and O—H⋯O hydrogen bonds

Oxonium (dihydrogen 1-amino­ethane-1,1-diyldiphospho­nato-κ2 N,O)[hydrogen (1-amino-1-phosphono­ethyl)phospho­nato-κ2 N,O]palladium(II) trihydrate

The title compound, (H3O)[Pd(C2H7NO6P2)(C2H8NO6P2)]·3H2O, was synthesized by the reaction of [Pd(H2O)4](NO3)2 with 1-amino­ethane-1,1-diyldiphospho­nic acid in aqueous solution. The asymmetric unit contains one mol­ecule of the complex existing as an anion, an oxonium counter-ion and three solvent water mol­ecules. The PdII ion occupies a position on a pseudo-twofold axis, which is not realized crystallographically. The slightly distorted square-planar coordination environment of the PdII ion consists of the O atoms from two phospho­nic acid groups and two N atoms of the amino groups in cis positions. The crystal structure displays N—H⋯O and O—H⋯O hydrogen bonding, which creates a wide three-dimensional network

[1-(2-Oxidobenzyl­idene)-4-phenyl­thio­semicarbazidato-κ3 O,N 1,S](pyridine-κN)copper(II)

In the structure of the title compound, [Cu(C14H11N3OS)(C5H5N)], the CuII atom exhibits a slightly distorted square-planar CuN2OS coordination polyhedron consisting of a phenyl O, an azomethine N and a thio­amide S atom from the tridentate thio­semicarbazonate dianion, and the N atom of a pyridine mol­ecule. The thio­semicarbazonate ligand exists in the thiol tautomeric form as an E isomer. Rotational disorder of the pyridine and phenyl rings in a 1:1 ratio of the respective components is observed. An extensive network of weak N—H⋯S, C—H⋯O, C—H⋯N and C—H⋯S hydrogen-bonding inter­actions consolidates the structure

2-Hydroxy­amino-2-oxoacetohydrazide

In the title compound, C2H5N3O3, the hydroxamic group adopts an anti orientation with respect to the hydrazide group. In the crystal, mol­ecules are connected by N—H⋯O and O—H⋯N hydrogen bonds into zigzag chains along the c axis

Bis[(1-ammonio­ethane-1,1-di­yl)diphospho­nato-κ2 O,O′]diaqua­nickel(II) nona­hydrate

The title compound, [Ni(C2H8NO6P2)2(H2O)2]·9H2O, exhibits a slightly distorted octa­hedral coordination environment around the NiII atom. It contains two mol­ecules of 1-amino­­ethyl­idenediphospho­nic acid in the zwitterionic form, coord­inated via O atoms from two phospho­nate groups and creating two six-membered chelate rings. Two water mol­ecules in cis positions complete the coordination environment of the NiII atom. The title compound contains nine partly disordered solvent water mol­ecules, which create a three-dimensional network of strong O—H⋯O and N—H⋯O hydrogen bonds

Serbian Virtual Observatory

We review the newly established project of Serbian Virtual Observatory. In the last few years Virtual Observatories are becoming a new concept in the world of astronomy. The main aim of Virtual Observatories is to make accessible astronomical data to astronomers regardless of their geographical location as well as provide them with tools for analysis. The project of Serbian Virtual Observatory aims to achieve the following goals: 1) establishing SerVO and join the EuroVO and IVOA 2) establishing SerVO data Center for digitizing and archiving astronomical data obtained at Serbian observatories 3) inclusion of BelData/STARK-B and other theoretical and simulated data in SerVO 4) development of tools for visualization of dat

Reading tea leaves worldwide: decoupled drivers of initial litter decomposition mass‐loss rate and stabilization

The breakdown of plant material fuels soil functioning and biodiversity. Currently, process understanding of global decomposition patterns and the drivers of such patterns are hampered by the lack of coherent large‐scale datasets. We buried 36,000 individual litterbags (tea bags) worldwide and found an overall negative correlation between initial mass‐loss rates and stabilization factors of plant‐derived carbon, using the Tea Bag Index (TBI). The stabilization factor quantifies the degree to which easy‐to‐degrade components accumulate during early‐stage decomposition (e.g. by environmental limitations). However, agriculture and an interaction between moisture and temperature led to a decoupling between initial mass‐loss rates and stabilization, notably in colder locations. Using TBI improved mass‐loss estimates of natural litter compared to models that ignored stabilization. Ignoring the transformation of dead plant material to more recalcitrant substances during early‐stage decomposition, and the environmental control of this transformation, could overestimate carbon losses during early decomposition in carbon cycle models