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Structure of Dibenzocrown Ethers and their H-Bonded Adducts.1. [1.5]Dibenzo-18-Crown-6 and Biphenyl-20-Crown-6: Complexes with Amidosulfuric Acid |
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| Authors: | Sergei A Kotlyar Marina S Fonari Yurii A Simonov Gabriele Bocelli Oleg V Shishkin Svetlana V Shishkina Vyacheslav V Tkachuk Ruslan Ya Grygorash Gerbert L Kamalov |
| Institution: | (1) A.V. Bogatsky Physico-Chemical Institute, National Academy of Science of Ukraine, Lustdorfskaya doroga 86, Odessa, Ukraine;(2) Institute of Applied Physics, Academy of Sciences of Moldova, Academy str., 5, MD2028 Chisinau, Moldova;(3) IMEM-CNR, Parma, Italy;(4) Institute of Scintillation Materials, National Academy of Science of Ukraine, Lenina pr., 60, Kharkov, Ukraine |
| Abstract: | The interaction of the amidosulfuric acid NH 3 SO 3 with 15 distal and proximal dibenzocrown ethers, including diphenyloxide, diphenylsulfide and biphenyl ones leads to the stable (1:1) complexes only in the case of 2.4]- and 1.5]dibenzo-18-crown-6 and biphenyl-20-crown-6. According to the data of the X-ray analysis, in the two last adducts the amidosulfuric acid coordinates to hexadentate crown ethers in a zwitterion form through a near-ideal ‘tripod’ arrangement to alternate crown oxygen atoms. The conformations of crown molecules are different in complexes and in initial macrocyclic ligands.This revised version was published online in July 2005 with a corrected issue number. |
| Keywords: | amidosulfuric acid zwitterion dibenzocrown ethers H-bonded adducts host-guest complexes synthesis and crystal structure |
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