1. New super- and supramolecular receptor systems — cages, chains, squares, and dendrimers incorporating macrocycles as structural elements

   • L. F. Lindoy

   Review Pages: 1 - 9

2. Conical cavitands as second coordination spheres and protecting environments. Towards metal-centred, intra-cavity reactions

   • D. Armspach
   • I. Bagatin
   • D. Matt

   Review Pages: 10 - 19

3. Biologically potent sulphonamide imine complexes of organotin(IV): Synthesis, spectroscopic characterization and biological screening

   • M. Jain
   • V. Singh
   • R. V. Singh

   Article Pages: 20 - 27

4. An efficient solvent free and one-pot conversion of aldehydes into nitriles using NH²OH.HCl/CH³COCl/charcoal system

   • H. Sharghi
   • M. Hosseini Saravi

   Article Pages: 28 - 32

5. Facile entries for regioselective synthesis of [1,2,4]triazolo-[4,3-a]pyrimidin-5(1H)-ones from 2-thiouracil

   • A. S. Shawali
   • I. M. Abbas
   • A. M. Mahran

   Article Pages: 33 - 39

6. Determination of Cr(III) and Cr(VI) in environmental waters by derivative flame atomic absorption spectrometry using flow injection on-line preconcentration with double-microcolumn adsorption

   • H. -W. Sun
   • W. -J. Kang
   • S. -G. Shen

   Article Pages: 40 - 46

7. Complexation between rare earth metals and 1, 5-di(2-hydroxy-5-sulfophenyl)-3-cyanoformazan occurring on cetyltrimethylammonium bromide micelle

   • L. -X. Zheng
   • H. -W. Gao
   • R. -Y. Xue

   Article Pages: 47 - 52

8. Synthesis, X-ray characterization, NMR and ab initio molecular-orbital studies of some cadmium(II) macrocyclic Schiff-base complexes with two 2-aminoethyl pendant arms

   • H. Keypour
   • H. Khanmohammadi
   • M. R. Taylor

   Article Pages: 53 - 64

9. Complexation of vanadium(IV) with hydroxamate chelators and their stability relation with pH

   • K. Ali
   • N. Fatima
   • S. A. Kazmi

   Article Pages: 65 - 70

10. An ab Initio study of conformational properties of (Z,Z)-, (E,Z)- and (E,E)-cycloocta-1,5-diene

    • I. Yavari
    • H. Kabiri-Fard
    • S. Moradi

    Article Pages: 71 - 78

11. Simultaneous preconcentration flotation-separation and spectrophotometric determination of thorium, lanthanum and yttrium in some geological and enviromental samples

    • A. M. Abdallah
    • M. A. Kabil
    • D. S. Ismael

    Article Pages: 79 - 87