It is shown that iron(II) tetra-aminophthalocyanine complex electropolymerized onto a multi-walled carbon nanotube-modified basal plane pyrolytic graphite electrode greatly enhanced the electrocatalytic detetion of amitrole (a toxic herbicide), resulting in a very low detection limit (0.5 nM) and excellent sensitivity of 8.80±0.44 μA/nM, compared to any known work reported so far. The electroca...

In the title compound, (C(16)H(36)N)[Fe(C(12)H(8)N(3)O(2))(CN)(3)]·2H(2)O, the tetra-n-butyl-ammonium ion has a tetra-hedral configuration around the N atom, while the Fe(III) atom of the tricyanido[N-(2-pyridyl-carbon-yl)pyridine-2-carboximidato]iron(III) anion adopts a distorted octa-hedral geometry. O-H⋯O and O-H⋯N hydrogen bonds link the components in the crystal structure.

A facile and efficient synthetic protocol was established for the construction of novel tri- and tetra-cyclic pyrrolo/pyrrolizinoquinoline architectures via the in situ formation of azomethine ylide followed by an intramolecular [3 + 2] cycloaddition reaction strategy. This protocol leads to the creation of two/three new rings and three/four contiguous stereocentres, in which one of them is a t...

Determination of the absolute configuration of chiral tetra-substituted carbon centers is one of the most taxing steps in the enantioselective construction of this structural motif in asymmetric synthesis. Here, we demonstrate that the crystalline sponge method provides an effective way to crystallographically determine the absolute configuration of organic compounds bearing chiral quaternary c...

The title acetone solvate, C(42)H(28)O(2)·C(3)H(6)O [systematic name: 1,3,10,12-tetra-phenyl-19,20-dioxapenta-cyclo-[10.6.2.0(2,11).0(4,9).0(13,18)]icosa-2(11),3,5,7,9,13,15,17-octa-ene acetone monosolvate], is a photooxygenation product of rubrene (systematic name: 5,6,11,12-tetra-phenyl-tetra-cene). The mol-ecule bends at the bridgehead atoms, which are linked by the O-O transannular bond, wi...

The title compound, C(10)H(10)N(2) (2+)·C(8)Br(4)O(4) (2-)·2H(2)O, consists of a tetra-bromo-terephthalate dianion, a 4,4'-bipyridinium dication and two solvent water mol-ecules. Crystallographic inversion centers are situated at the center of the aromatic ring of the dianion as well as at the midpoint of the carbon-carbon bond connecting the pyridine rings in the dication. In the crystal, inte...

THE TITLE COMPOUND (SYSTEMATIC NAME tert-butyl 3-{[1-(methoxy-carbon-yl)eth-yl]amino-carbon-yl}-3-methyl-carbazate), C(11)H(21)N(3)O(5), is a precursor for the study of a new class of foldamer based on aza/α-dipeptide oligomerization [Abbas et al. (2009 ▶). Tetra-hedron Lett.50, 4158-4160]. The asymmetric unit consists of one mol-ecule in an extended conformation which is stabilized by inter-mo...