The solution chemistry and solid-state structures of the Co(II), Fe(II), and Ni(II) complexes of 7,13-bis(carbamoylmethyl)-1,4,10-trioxa-7,13-diazacyclopentadecane (L) are reported as members of a new class of paramagnetic chemical exchange saturation transfer (paraCEST) MRI contrast agents that contain transition metal ions. Crystallographic data show that nitrogen and oxygen donor atoms of th...

Conformational flexibility of cyclen controlled by complexation with Ni( ii ) and Cu( as evidenced structural studies.

Important applications of the NiII, PdII and PtII complexes [M(Hdmg)2] (H2dmg = dimethylglyoxime) stem from their metal...metal stacked virtually insoluble aggregates. Given virtual insolubility materials, we postulated that rare reports on dissolved species in solution do not represent monomolecular but oligomers. We thus studied structural spectral properties entities these compounds using de...

NiII and MnIII Schiff base complexes (Salophen-Ni Salophen-MnCl) bearing a pending carboxylic group were prepared characterized. Both grafted onto mesoporous amino-functionalized SBA-15 silica, by formation of an amide function between the propylamine groups support acid functions salophen ligand (corresponding respective to 1.30 wt.% Ni 1.06 Mn). The co-catalytic behaviour free was then evalua...

We present the first search for $z\geqslant7$, continuum-confirmed sources with NIRISS/WFS spectroscopy over Abell 2744 Frontier Fields cluster, as part of GLASS-JWST ERS survey. With $\sim15$ hrs pre-imaging and multi-angle grism exposures in F115W, F150W, F200W filters, we describe general data handling (i.e., reduction, cleaning, modeling, extraction processes) analysis showcase power JWST t...

Infrared echo has proven to be an effective means discover transient accretion events of supermassive black holes (SMBHs), such as tidal disruption (TDEs) and changing-look active galactic nuclei (AGNs), in dusty circumnuclear environments. To explore the populations SMBH events, we have constructed a large sample Mid-infrared Outbursts Nearby Galaxies (MIRONG) performed multiwavelength observa...

Seven uranyl ion complexes have been crystallized under solvo-hydrothermal conditions from 2,5-thiophenedicarboxylic acid (tdcH2) and diverse additional, structure-directing species. [UO2(tdc)(DMF)] (1) is a two-stranded monoperiodic coordination polymer, while [PPh3Me][UO2(tdc)(HCOO)] (2) simple chain with terminal formate coligands. Although it also monoperiodic, [C(NH2)3][H2NMe2]2[(UO2)3(tdc...