First Stability Characterization for a CZT Detection System in an ee Collider Environment.

The SIDDHARTA-2 collaboration has developed a novel X-ray detection system based on cadmium-zinc-telluride (CZT, CdZnTe), marking the first application of this technology at the DAΦNE electron-positron collider at INFN-LNF. This work aims to demonstrate the stability of the detectors' performance in terms of linearity and resolution over short and long periods, thereby establishing their suitability for precise spectroscopic measurements within a collider environment. A reference calibration spectrum is presented in association with findings from assessments of linearity and resolution stability.

Thiopyridazine-Based Palladium and Platinum Boratrane Complexes.

Palladium and platinum boratrane complexes of the type [M{B(Pn)}(PPh)] (M = Pd 1, Pt 2b) have been prepared via the reaction of the soft scorpionate ligand potassium tris(4-methyl-6- tert-butyl-3-thiopyridazinyl)borate KTn with bis(triphenylphosphine)metal(II) dichloride. While reaction with the Pd precursor allowed direct isolation of a symmetric boratrane complex, the Pt analogue led to the hydrido compound [Pt{B(Pn)}(PPh)H]Cl (2a), which after reaction with a base gave 2b. Subsequent oxidation with Br and I, respectively, led to the dihalide compounds of the molecular formula [M{B(Pn)}X] (3a,b-4a,b).

Efficient CO Insertion and Reduction Catalyzed by a Terminal Zinc Hydride Complex.

The terminal zinc hydride complex [Tntm]ZnH (2; Tntm=tris(6-tert-butyl-3-thiopyridazinyl)methanide) is an efficient hydrosilylation catalyst of CO at room temperature without the need of Lewis acidic additives. The inherent electrophilicity of the system leads to selective formation of the monosilylated product (MeO) SiO CH (at room temperature with a TOF of 22.2 h and at 45 °C with a TOF of 66.

Three-Fold-Symmetric Selenium-Donor Metallaboratranes of Cobalt and Nickel.

A novel selenium-containing pyridazinyl-based soft scorpionate ligand (KTnse) was synthesized. It reacts with CoCl and NiCl, yielding the first metallaboratrane complexes with selenium in their donor positions. Further substitution with Ag(OTf) or NaN allows isolation of the respective triflate or azide complexes.