A diradical/biradical character of organic derivatives is one the key aspects contemporary research focusing on fundamental studies followed by potential applicability relying unique optical, electronic, or magnetic properties assigned to unpaired electrons. precise involvement two p-phenylenes into a cyclophane-like conjugated, diatropic system creates flexible molecule with different characters both subunits (benzene and quinone) imprinting structure Kekulé delocalized system. dynamic...

Octaphyrins, offer unparalleled opportunities for designing complex molecular architectures with distinct physical and chemical properties. However, lemniscate‐shaped benzioctaphyrins remain scantily explored, leaving a gap in understanding how this unconventional geometry/shape influences macrocyclic behaviour. In study, we explore the design, synthesis, structural properties of benzioctaphyrin by incorporating bis‐E‐stilbene unit, where vinylene π‐bridge connects phenylene rings. The...

Abstract An unstable conjugated homoporphyrin was successfully stabilized by introducing meso ‐aryl substitutents. It evident from the moderate diatropic ring current found NMR analysis that newly formed 20π free base and its protonated form exhibited Möbius aromatic character. Furthermore, complexation as a ligand with an Rh I ion afforded unique binding mode retained aromaticity. Overall, these compounds are smallest molecules, confirmed spectral crystal‐structure supported theoretical studies.

Stable homocarbaporphyrinoids were successfully synthesized by incorporating the m-o-m and p-o-p terphenyl units into porphyrin core. The distinct bonding modes of in macrocycle generated two structural isomers with four carbon atoms macrocyclic environment. core was utilized to stabilize RhI ion. spectral analyses revealed that restricted (m-o-m) allowed (p-o-p) conjugation provide overall non-aromatic characteristics both free bases their complexes.

The introduction of a higher arene unit as structural motif is unprecedented in calixphyrin chemistry. Herein, the syntheses, spectral and characterization heretofore anonymous terphenylene (o-p-o) incorporated with fused sp

A new rectangular-shaped carbadecaphyrin was successfully synthesized by introducing a terphenylene unit (m-m-m) in the macrocyclic core. The moiety offers an open framework with multiple binding pockets to stabilize two Rh(I) ions photophysical and structural studies reveal non-aromatic character of ligand its bis-Rh(I) complex.

Isosmaragdyrin with an N3C2 core is successfully achieved by introducing a 2,6-di-m-phenylpyridine unit. The utilized to stabilize the Rh(i) ion in N-Rh(i)-N bonding mode and Pt(ii) (N^C)N fashion form unsymmetrical pincer-type organometallic complex.

Three distinct conformational structures of carbaoctaphyrins were prepared by incorporating bis-4,4'-biphenyl units in the macrocyclic core. The free-base form adopts a figure-eight conformation, whereas protonation triggers change with pyrrole ring inversion and acquires an open-framework structure. insertion bis-RhI metal ion core affords singly twisted Furthermore, local aromaticity dominates overall all three forms, thus nonaromatic characteristics. These results are supported spectral...

This work describes the synthesis of azidonaphthalimide carboxylic acids which act as fluorescent templates with a built-in photoreactive group and linker thus simplifying design protein labeling agents. These were separately connected to selectivity hands like sulfonamide ampicillin for successful labeling/detection HCAII PBPs, respectively.

The rational design and synthesis of a novel contorted calix[2]phyrin(

An o-p-biphenyl moiety-incorporated 32π hexaphyrin(3.1.1.3.1.1) is successfully achieved. Replacing ortho with meta connectivity in the biphenyl unit of hexaphyrin leads to formation its structural isomer, octaphyrin(1.1.1.0.1.1.1.0). Spectral and analyses reveal lack planarity presence an m-arene octaphyrin, thus affording nonaromatic characteristics.

Easily synthesizable tetrakis-(<italic>N</italic>-methyl-4-pyridinium)-porphyrin as a diaCEST agent that shows nearly pH independent good contrast in wide range of pH.

Abstract An unstable conjugated homoporphyrin was successfully stabilized by introducing meso ‐aryl substitutents. It evident from the moderate diatropic ring current found NMR analysis that newly formed 20π free base and its protonated form exhibited Möbius aromatic character. Furthermore, complexation as a ligand with an Rh I ion afforded unique binding mode retained aromaticity. Overall, these compounds are smallest molecules, confirmed spectral crystal‐structure supported theoretical studies.

Abstract The N‐confused pyritriphyrin(3.3.1) was synthesized by switching the bonding mode of subpyriporphyrin with inclusion two o ‐phenylene rings in macrocyclic core and prevails nonaromatic character due to local aromatic characteristic embedded 3,5‐diphenylpyridyl unit. simplest contracted derivative pyricalixphyrin such as calix[2]phyrin(2.2. 1.1.1 ) is mainly achieved; (a) along pyritriphyrin; (b) changing reaction condition (c) from pyritriphyrin using simple reducing agent....

An unprecedented formation of a meso-fused β-β' carbaporphyrin dimer and its monomer with keto group was described. These analogues were synthesized from carbatriphyrin(3.1.1.) by metal assisted strategy using PtCl2 salt in single step without any prefunctionalized precursors. Upon dimerization, the monomeric ligand dianionic core is transformed into dimeric structure unique trianionic cores.

Rhodium complexes of biphenylcorrole are reported, and the molecular structures unambiguously confirmed by single-crystal X-ray analysis. The adj-CCNN core dicarbacorrole efficiently stabilizes a rhodium metal ion in its two different oxidation states. It is pertinent to point out that Rh(I) complex attains square-planar geometry while organo-Rh(III) forms an octahedral complex. Furthermore, density functional theory studies corroborate experimental findings.

Rhodium(III) and iridium(III) bipyricorrole complexes have been unprecedentedly reported. Single-crystal X-ray diffraction studies unambiguously evinced the molecular structures of metal in octahedral geometry. The monoanionic platform effectively stabilizes ions their higher oxidation states. It is worth mentioning that fluorescence quantum yield rhodium(III) complex 3-fold than free-base bipyricorrole.

Abstract A diradical/biradical character of organic derivatives is one the key aspects contemporary research focusing on fundamental studies followed by potential applicability relying unique optical, electronic, or magnetic properties assigned to unpaired electrons. precise involvement two p ‐phenylenes into a cyclophane‐like conjugated, diatropic system creates flexible molecule with different characters both subunits (benzene and quinone) imprinting structure Kekulé delocalized system....

Abstract The investigation of unsaturated or π‐conjugated hydrocarbons, particularly within the macrocyclic framework, has garnered significant interest due to their fundamental properties and practical applications. This research focuses on synthesis characterization a novel stable dicarbatriphyrin(2.1.1) which was constructed by amending [14]triphyrin(2.1.1) framework by, replacing two pyrrole rings with meta ‐connected phenyl introducing an o ‐benzene bridge at C2 position. structural...

The structural pressure-induced ionization process is implemented to produce Zn(III) complex for the first time and possible potential applications technological advances are reported in this article. inversion of electron population observed at ground state newly synthesized corroborates an unexplored material response property towards electrical magnetic fields. first-time report a true transition metal behavior zinc fetches new thoughts about zinc-based bio-enzymatic bio-catalytic...

Anion bound and organo-Pd( ii ) complexes of isosmaragdyrin with N 3 C 2 core are reported, where the structures confirmed by single-crystal X-ray analysis.