*From the ACCP-SEEK program, reprinted with permission. Items are selected by Department Editors Richard S. Irwin, MD, FCCP, and John G. Weg, MD, FCCP. For additional information about the ACCP-SEEK program, phone 1-847-498-1400. Correspondence to: Richard S. Irwin, MD, FCCP, University of Massachusetts Medical School, Pulmonary and Critical Care Medicine, 55 Lake Avenue North, Worcester, MA 01...

Mn(I) carbonyl terpyridyl complexes have been synthesized and characterized. The tricarbonyl derivative exhibits interesting behaviors for controlled CO-release by both thermal and photosynthetic pathways.

In the crystal structure of the title compound, C14H12Cl3NO2, no classical hydrogen-bonding inter-actions are observed. The methyl-ene fragments of the benzyl groups participate in non-classic hydrogen-bond inter-actions with the carbonyl O atoms of neighboring mol-ecules, generating co-operative centrosymmetric dimers with R 5 (5)(10) ring motifs. The overall mol-ecular arrangement in the unit...

An efficient and greener synthesis of bis(indoly)methanes was investigated via electrophilic substitution reaction of indole with carbonyl compounds in the presence of lemon juice as natural acid catalyst. The demonstrated environmentally benign protocol provided bis(indoly)methanes under mild reaction conditions, shorter reaction time and in excellent yield with simple work up procedure.

Cyanide is one of the most potent and toxic chemicals produced by industry. The jewelry industry of Córdoba (Spain) generates a wastewater (residue) that contains free cyanide, as well as large amounts of cyano-metal complexes. Cyanide is highly toxic to living systems because it forms very stable complexes with transition metals that are essential for protein function. In spite of its extreme ...

The absorption spectrum of fluorenone in zeolite L is calculated from first-principles simulations. The broadening of each band is obtained from the explicit treatment of the interactions between the chromophore and its environment in the statistical ensemble. The comparison between the simulated and measured spectra reveals the main factors affecting the spectrum of the chromophore in hydrated...

Phosphine derivatives of alkylidyne tricobalt carbonyl clusters have been tested as catalysts/catalyst precursors in intermolecular and (asymmetric) intramolecular Pauson-Khand reactions. A number of new phosphine derivatives of the tricobalt alkylidyne clusters [Co3(micro3-CR)(CO)9] (R = H, CO2Et) were prepared and characterised. The clusters [Co3(micro3-CR)(CO)9-x(PR'3)x] (PR'3 = achiral or c...

In the title compound, C(21)H(24)N(2)O(3), the diazepane ring adopts a chair conformation. The central diazepane ring forms dihedral angles 67.80 (7) and 72.29 (5)° with the two benzene rings. The eth-oxy-carbonyl group is disordered over two conformations with site-occupancy factors of 0.643 (5) and 0.357 (5). In the crystal, inversion dimers linked by pairs of N-H⋯O hydrogen bonds generate R(...

The asymmetric unit of the title ion-pair complex, (C(9)H(12)NO(2))(2)[Ni(C(4)N(2)S(2))(2)], contains two 1-(eth-oxy-carbonyl-meth-yl)pyridinium cations and one bis-(1,2-dicyano-ethene-1,2-dithiol-ato)nickelate(II) dianion, which exhibits a slightly distorted square-planar coordination geometry. In the crystal, the cations are linked by strong C-H⋯O hydrogen bonds into C(6) chains along [100]. ...

The three independent organic mol-ecules of 3,5-dinitro-pyridin-4(1H)-one monohydrate, C(5)H(3)N(3)O(5)·H(2)O, each feature an N-H⋯O(water) hydrogen bond. Each water mol-ecule serves as hydrogen-bond donor to two carbonyl O atoms; these hydrogen bonds give rise to a layer motif. Two of the three formula units lie on special positions of site symmetry 2.