Interacting supernovae (SNe) IIn and Ibn show narrow emission lines have always been a mysterious unsolved genre in SNe physics. We present comprehensive analysis of the temporal spectroscopic behaviour group interacting SNe~IIn Ibn. choose SNe~2012ab, 2020cui, 2020rc 2019uo as representative members these SN sub-types to probe nature explosion. Our study reveals that are heterogeneous, bright ...

3,7,23,27-Tetrabromo[36]octaphyrin 2 was synthesized as a novel octaphyrin bearing two meso-free positions. Surprisingly, its ZnII and NiII complexation reactions produced directly fused porphyrin(2.1.1.1) dimer 6, meso-α N-confused porphyrin (NCP) 7, the first example of NCP tape, respectively, via transannular C−C bond formation. While 6 exhibits diatropic ring-current effect owing to global ...

Mutual chiral recognition of four stereoisomers of tadalafil and three pairs of enantiomers of proton pump inhibitors (PPIs) including pantoprazole, lansoprazole, and omeprazole, as well as quantitative analysis of enantiomeric excess is achieved on the basis of the competitive fragmentation of doubly charged trimeric NiII cluster ions. Compared with a singly charged trimeric cluster ion, a dou...

A novel series of mixed-valent, heteroleptic transition metal diketonates that can be utilized as prospective single-source precursors for the low-temperature preparation of oxide materials are reported. The first mixed-valent iron β-diketonates with different FeIII/FeII ratios have been synthesized by applying the mixed-ligand approach. Based on nearly quantitative reaction yields and analysis...

We obtained spectra of ASASSN-V J205543.90+240033.5 (J2055), a system that shows photometric variations similar to the white dwarf (WD) pulsar AR Scorpii (Kato et al. arXiv:2109.03979). Our display continuum rising steeply toward blue as well an array emission lines. Resolved Balmer and Paschen lines are seen with H$\alpha$ H$\beta$ having central absorption features. The strongest unresolved C...