[Rare superinfection in a COVID-19 patient-A chronology]. / Seltene Superinfektion bei einem COVID-19-Patienten ­ Eine Chronologie.

After a resuscitation situation a SARS-CoV­2 sample from a 55-year-old man who had been in the hospital for elective ablation for atrial fibrillation was tested positive. The patient history revealed that there had been a previous confirmed contact with a COVID-19 positive patient. The patient developed the complete set of symptoms of COVID-19 pneumonia with extensive intensive care treatment. After about 2 weeks of treatment, weaning had to be stopped due to the deterioration of the severe septic condition of the patient and he showed microbiological evidence of a superinfection with Cryptococcus neoformans and later Leclercia adecarboxylata. The patient was treated successfully and survived the disease.

K⊂{[FeII(Tp)(CN)3]4[CoIII(pzTp)]3[CoII(pzTp)]}: a neutral soluble model complex of photomagnetic Prussian blue analogues.

Straightforward access to a new cyanide-bridged {Fe4Co4} "molecular box" containing a potassium ion, namely K⊂{[FeII(Tp)(CN)3]4[CoIII(pzTp)]3[CoII(pzTp)]} (1) (with Tp and pzTp = tris- and tetrakis(pyrazolyl)borate, respectively), is provided, alongside its full characterisation. A detailed analysis of the molecular structure (X-ray diffraction, mass spectrometry, NMR spectroscopy) and electronic properties (EPR spectroscopy, SQUID magnetometry, UV/Vis spectroscopy, cyclic voltammetry) reveals that 1 shows slow magnetic relaxation and a remarkable photomagnetic effect at low temperature which is reminiscent of some FeCo Prussian Blue Analogues (PBAs), and is ascribed to a photo-induced electron transfer. However, in contrast with these inorganic polymers, the overall neutral compound 1 is soluble and remarkably stable in organic solvents such as CH2Cl2. Moreover, 1 shows interesting redox versatility, with electrochemical experiments revealing the possible access to six stable redox states.

From MgBr via single-electron transfer (SET) to a paramagnetic Mg(II) compound and back to Mg(I): [MgBr(L(1))˙]2 and [K(thf)3]2[Mg2(L(1))2], L(1) = RN=C(Me)C(Me)=NR, R = 2,6-diisopropylphenyl.

Since Mg(+) ions are isoelectronic to Na atoms, an easy single electron transfer (SET) can be expected for MgBr. Even at 190 K, the radical MgBr (obtained via its sophisticated condensation) in a metastable solution transfers its electron to a diazadiene entity. A paramagnetic Mg(II) compound [MgBr(L(1))˙]2 (4; L(1) = DippN=C(Me)C(Me)=NDipp) is formed consisting of a singly reduced ligand. As shown by EPR investigations, dimeric 4 dissociates in ethereal solvents to two monomeric subunits. In addition, 4 can subsequently be reduced with potassium to furnish again a Mg(I) compound, namely [K(thf)3]2[Mg2(L(1))2] (3).

[Muscle relaxation using atracurium in porphyria variegata--case notes]. / Muskelrelaxation mit Atracurium bei Porphyria variegata--Kasuistische Bemerkungen.

A case is presented involving the use of atracurium (120 mg) as a muscle relaxant in a patient with known variegate porphyria. The concentrations of urinary porphyrins and porphyrin precursors did not increase after this anaesthetic, and no exacerbation of the disease was noted. This single case suggests that atracurium can be used safely in patients with porphyria.