Satish G. Bodige

Synthesis and Alkali Metal Picrate Extraction Capabilities of Novel, Cage-Functionalized, Pyridine Containing Crown Ethers and Cryptands

Abstract The syntheses of novel cage-functionalized crown ethers,11–13, that contain one or more pyridyl units are reported. The results of alkali metal picrate extraction experiments performed by using11 and12 are compared with those obtained by using the corresponding model (non-cage) crown ethers. Cage-functionalized crown ether11 displays greater avidity toward Li+ picratevis-a`-vis the corresponding model system,2, whereas12 displays considerably lower avidity than its corresponding model system,3, toward extraction of alkali metal picrates from aqueous solution into CHCl3. In addition, a highly preorganized, cage-annulated cryptand,16, was prepared; this unusual host molecule was found to be both highly avid highly selective toward extraction of Li+ and Na+ picrates. Download : Download full-size image

Structure and properties of potential nonlinear optical materials

The synthesis, structure and properties of four ferrocene derivatives of 2-amino-1,2,3-triazole are reported. Solvatochromism is used as a screening process to assess the potential nonlinear optical behavior of these compounds. In general, this technique involves a number of assumptions, which may not be valid for organometallic complexes. Compound 3 crystallizes in space group P-1 with cell dimensions a = 5.771(2), b = 19.048(5), c = 19.343(5) Å and α = 61.104(4), β = 88.410(5), γ = 89.858(5)°; compound 5 crystallizes in space group P21/c with cell dimensions a = 12.545(2), b = 13.308(2), c = 20.513(4) Å and β = 104.035(3)°; compound 9 crystallizes in space group P21/n with cell dimensions a = 12.599(4), b = 14.734(4), c = 13.619(5) Å, and β = 107.63(2); compound 11 crystallizes in space group P-1 with cell dimensions a = 7.638(3), b = 9.619(4), c = 12.692(5) Å and α = 77.588(7), β = 78.416(7), γ = 71.357(7).

Structure and properties of N-phenylmaleimide derivatives

The crystal structures of 2-chloro-N-phenyl-triphenylphosphoranaminomaleimide 1, N-phenyl-di(triphenylphosphoranamino)maleimide 2a, a nitromethane solvate 2b, N-phenyl-2,3-dithiomaleimide 3, and N-phenyl-2,3-di(thiophenyl)maleimide have been determined. 1 crystallizes in space group P-1 with cell dimensions a = 10.432(6), b = 14.661(5), c = 9.376(4) Å, α = 93.13(4), β = 92.09(5), and γ = 79.08(4)°, 2a crystallizes in space group P21/c with cell dimensions a = 11.272(2), b = 28.910(7), c = 12.702(2) Å, and β = 115.31(2)°, 2b crystallizes in space group P-1 with cell dimensions a = 13.140(2), b = 13.796(3), c = 11.755(3) Å, α = 99.62(2), β = 100.23(2), and γ = 102.74(2)°, 3 crystallizes in space group C2/c with cell dimensions a = 42.926(5), b = 5.757(6), c = 8.259(3) Å, and β = 99.71(3)°, and 4 crystallizes in space group C2/c with cell dimensions a = 20.055(4), b = 10.370(6), c = 18.690(7) Å, and β = 100.32(2)°. Vicinal diazides of five-membered rings undergo the normal Staudinger reaction to form triphenylphosphoranamino derivatives. Compounds 1 and 2 fluoresce strongly, but nitromethane quenches the fluorescence of 2.

Short H...H distances in norbornene derivatives

AbstractA short H· · ·H intramolecular interaction was reported previously for an anhydride of syn-sesquinorbornene. The synthesis and structure of a such an anhydride with an additional five-membered dithiole ring has been investigated. While hydrogen atom positions are not accurately located, the 1.62 Å separation indicates this molecule is a candidate for the shortest H· · ·H interaction. Two cycloadducts of norbornadiene, which literature suggests might exhibit additional short interactions, are reported also; however, the isomers with minimal intramolecular interactions are the isolated products. C22H20O3S2, 3, crystallizes in P

Structures and nonlinear optical properties of polar 2-amino-1,2,3-triazolequinone derivatives

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Structure of an unusual cage dimer diol

with a = 10.881(4), b = 13.712(8), C = 6.548(8) Å, α = 101.32(6), β = 107.49(5), γ = 90.49(4)°, Dcalc = 1.445 g cm−3, and Z = 2, C21H20O4Cl8, 5, in P21/n with a = 8.168(2), b = 13.488(4), c = 23.500(6) Å, β = 94.72(2)°, Dcalc = 1.597 g cm−3, and Z = 4, C21H28O4, 6, in P>

Thermodynamic vs. kinetic control in the Diels-Alder cycloaddition of cyclopentadiene to 2,3-dicyano-p-benzoquinone: Kinetic control revisited

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