The pyridine-rich complex [NiII(LN2Py3)(MeCN)](ClO4)2 (1) acts as an efficient electro- and photocatalyst in the generation of H2 from water. Observed TONs reach 1050 for electrocatalysis and a remarkable 3500 for photocatalysis. Experimental and DFT data support the ligand-reduced [NiIL˙] as the catalytically active species, contrasting with the [CoIL] observed for cobalt catalysts.

Phase-resolved VLT spectroscopy of the bursting Low Mass X-ray Binaries 4U 1636536/V801 Ara and 4U 1735-444/V926 Sco is presented. Doppler images of the NIII λ4640 Bowen transition reveal compact spots which we attribute to fluorescent emission from the donor star and enable us to define a new set of spectroscopic ephemerides. We measure Kem = 277 ± 22 km s and Kem = 226 ± 22 km s from the NIII...

Temperature can be used as clinical marker for tissue metabolism and the detection of inflammations or tumors. The use magnetic resonance imaging (MRI) monitoring physiological parameters like temperature noninvasively is steadily increasing. In this study, we present a proof-of-principle study MRI contrast agents (CA) absolute concentration independent imaging. These CAs are based on azoimidaz...

A series of symmetric multidentate Schiff base ligands 1–13 based on the N‚N′-4‚4′-ethylenebiphenylbis-3-methoxysalicylideneimine for used to bind various transition metals detection of K, AgI‚ CuII, Sr II Co II and NiII at trace levels in real-world samples has been synthesized purified and their structures was characterized.

The pond turtle (Trachemys scripta elegans) exhibits a notably sluggish pupillary light reflex (PLR), with pupil constriction developing over several minutes following light onset. In the present study, we examined the dynamics of the efferent branch of the reflex in vitro using preparations consisting of either the isolated head or the enucleated eye. Stimulation of the oculomotor nerve (nIII)...

Phase-resolved VLT spectroscopy of the bursting Low Mass X-ray Binaries 4U 1636536/V801 Ara and 4U 1735-444/V926 Sco is presented. Doppler images of the NIII λ4640 Bowen transition reveal compact spots which we attribute to fluorescent emission from the donor star and enable us to define a new set of spectroscopic ephemerides. We measure Kem = 277 ± 22 km s and Kem = 226 ± 22 km s from the NIII...

A nickel(ii) complex [Ni2LR2(CH3CN)4](ClO4)2·2CH3CN (1) has been synthesized by using a tridentate reduced Schiff base ligand, HLR, 2-[(3-methylamino-propylamino)-methyl]-4-nitrophenol and Ni(ClO4)2·6H2O. Stoichiometrically controlled addition of NH4SCN to the acetonitrile-water solution of 1 produced two other complexes, [Ni2LR2(μ1,1-NCS)(CH3CN)2](ClO4)·CH3CN (2) and [Ni2LR2(NCS)2 (CH3CN)2] (3...

The present investigation describes the synthesis and structural study of a metal-zinc ligand [NiL].H2O, which was used to generate trinuclear complex formulated as {Ni(m-L)Na(m-L)Ni}.(SCN)0.6.(Cl)0.4. title compound crystallizes in tetragonal space group I41/acd with following unit cell parameters: = 185403(5) Å, c 51.925(2) V 17849.0(3) Å3, Z 16, R1 0.074 wR2 0.209. Each organic molecule acts...

Herein we report a highly efficient method for nickel-catalyzed C-N bond formation between sulfonamides and aryl electrophiles. This technology provides generic access to a broad range of N-aryl and N-heteroaryl sulfonamide motifs, which are widely represented in drug discovery. Initial mechanistic studies suggest an energy-transfer mechanism wherein C-N bond reductive elimination occurs from a...