Evaluation of pattern and distribution of bronchiectasis in high resolution computed tomography and its correlation with etiological factors.

Background: Etiological diagnosis is essential in bronchiectasis for proper management as improperly managed bronchiectasis often worsens over a period of time. Etiological diagnosis of bronchiectasis depends on history, clinical features and HRCT scan. Recognition of the pattern of involvement & distribution of bronchiectasis in HRCT is useful to outline the differential diagnosis, map the complications and, hence, guide the further management in bronchiectasis.

Low Potential CO Reduction by Inert Fe(II)-Macrobicyclic Complex: A New Concept of Cavity Assisted CO Activation.

The advantage of a pre-organized π-cavity of Fe(II) complex of a newly developed macrobicycle cryptand is explored for CO reduction by overcoming the problem of high overpotential associated with the inert nature of the cryptate. Thus, a bipyridine-centered tritopic macrobicycle having a molecular π-cavity capable of forming Fe(II) complex as well as potential for CO encapsulation is synthesized. The inert Fe(II)-cryptate shows much lower potential in cyclic voltammetry than the Fe(II)-tris-dimethylbipyridine (Fe-MBP) core.

Cu Pyrazolyl-Benzimidazole Dinuclear Complexes with Remarkable Antioxidant Activity.

Three dinuclear coordination complexes generated from 1-n-butyl-2-((5-methyl-1H-pyrazole-3-yl)methyl)-1H-benzimidazole (L), have been synthesized and characterized spectroscopically and structurally by single crystal X-ray diffraction analysis. Reaction with iron(II) chloride and then copper(II) nitrate led to a co-crystal containing 78 % of [Cu(NO )(μ-Cl)(L')] (C ) and 22 % of [Cu(NO )(μ-NO )(L')] (C ), where L was oxidized to a new ligand L . A mechanism is provided.

Coordination complexes constructed from pyrazole-acetamide and pyrazole-quinoxaline: effect of hydrogen bonding on the self-assembly process and antibacterial activity.

Two mononuclear coordination complexes of -(2-aminophenyl)-2-(5-methyl-1-pyrazol-3-yl)acetamide (L), namely [Cd(L)Cl] (C) and [Cu(L)(CHOH)](NO) (C) and one mononuclear complex [Fe(L)(HO)](NO)·2HO (C), obtained after oxidation of L, have been synthesized and characterized spectroscopically. As revealed by single-crystal X-ray diffraction, each coordination sphere made of two heterocycles is completed either by two chloride anions (in C), two ethanol molecules (in C) or two water molecules (in C). The crystal packing analysis of C, C and C, revealed 1D and 2D supramolecular architectures, respectively, various hydrogen bonding interactions, which are discussed in detail.

A novel quinoline-based NNN-pincer Cu(II) complex as a superior catalyst for oxidative esterification of allylic C(sp)-H bonds.

We report for the first time that the quinoline-based NNN-pincer Cu(II) complex acts as an air stable superior catalyst for the oxidative cross-coupling of the allyl sp C-H bond with an acid for the synthesis of allyl esters in a homogeneous system at ambient temperature. The synthesized catalyst, 1, has been well characterized by various analytical techniques (HRMS, single crystal X-ray diffraction, CV, EPR, UV-vis spectroscopy) and showed excellent catalytic activity for the oxidative esterification of allylic C(sp)-H bonds at 40 °C within a very short period of time (1 h) using only 1 mol% of the catalyst. A wide variety of aromatic allylic esters were synthesized in moderate to good yields, which could be extended to aliphatic allyl esters as well.