The title complex, [Li4(C17H14N4)2(C4H8O)4], bears a novel tetra-dentate di-amido ligand. In the tetra-nuclear centrosymmetric complex mol-ecule, the metal atoms exhibit two kinds of coordination modes. The middle two Li(+) cations are coord-inated by four N (ligand) and one O (tetra-hydro-furan, THF) atoms, resulting in a distorted square-pyramidal geometry. The outer two Li(+) cations are in ...

The title compound, C(18)H(16)O(2), was prepared by reduction of 2-(5,6,7,8-tetra-hydro-2-naphtho-yl)benzoic acid with zinc dust. The benzene ring in the tetra-hydro-naphthyl substituent is nearly perpendicular to the plane of the isobenzofuran-1(3H)-one ring [87.15 (4)°]. The cyclo-hexane unit has a half-chair conformation in which two methylene groups in the tetra-methyl-ene bridge are disord...

background and objective: mmp enzymes are a family of membrane proteins that are capable of digesting extracellular matrix compounds (ecm) and basement membrane. matrilysin enzyme is the smallest member of mmp family that is encoded by mmp-7 gene (matrilysin). according to the reports, g allele of -181 a/g single nucleotide polymorphism of mmp-7 gene causes an increase in the expression of this...

a general, mild and efficient protocol has been developed for the synthesis of esters and thioesters. the process has been taking place using tetra n-butylammonium iodide (tbai) as a phase-transfer catalyst and in the presence of potassium carbonate (k2co3). a wide range of esters and thioesters was prepared in high yields and suitable times by the treatment of alcohols, phenols and thiols with...

Error correction codes are used in semiconductor memories to protect information against soft and hard errors. Soft error is a major concern for memory reliability especially for memories that are used in space applications. Hamming codes are attractive as they are simple to construct for any word length and encoding / decoding can be done with low latency. In this paper, the design of Single E...

In the title complex, [Ni(C₃₆H₂₆Cl₄N₄O₂)]·C₃H₆O, two 2,4-dichloro-benzoyl groups are grafted onto the methine groups of the Ni(II) complex Ni(tmtaa) (H₂tmtaa = 5,7,12,14-tetra-methyl-4,11-dihydro-dibenzo[b,i][1,4,8,11]tetra-aza-cyclo-tetra-decine). The complex has the shape of a saddle. The Ni atom is tetra-coordinated by the four N atoms of the macrocycle, forming a slightly tetra-hedrally dis...

In the title compound, (C9H8N)2[ZnCl4]·2H2O, the tetra-chlorido-zincate ion is located on a twofold rotation axis with the Zn atom on a special position. The crystal packing is stabilized by N-H⋯O and O-H⋯Cl inter-actions.

The mol-ecule of the title compound, C(30)H(42), occupies a special position on an inversion center. The four butyl side chains have all-trans planar conformations, and the alkyl planes are nearly orthogonal to the anthracene plane [C-C-C-C torsion angles of 79.6 (2) and 78.2 (2)°]. The overall mol-ecule has a stair-like shape with the n-butyl groups at the 1 and 8 positions extending towards t...

The mol-ecule of the title compound, C(28)H(32), is located on a crystallographic inversion center. The ethyl groups are essentially coplanar with the tetra-cene ring, making a torsion angle of -0.4 (4)°. The isopropyl groups adopt an asymmetric conformation with their terminal methyl groups positioned on opposite sides of the tetra-cene plane [the Me-C-C-C torsion angles are -22.5 (4) and 100....

The N-H bond in the title compound, C(13)H(14)NO(3)P, is syn-oriented relative to the P=O bond. The N atom deviates somewhat from planarity, the sum of the bond angles being 353.3°. The P atom has a distorted tetra-hedral coordination; its bond angles are in the range 93.96 (5)-116.83 (6)°. In the crystal, mol-ecules form centrosymmetric dimers through P=O⋯H-N hydrogen bonds.