Structure, conformation and hydrogen bonding of two amino-cycloalkanespiro-5-hydantoins
The crystal structures of 3-amino-cycloheptanespiro-4′-imidazolidine-2′,5′-dione (I) {systematic name: 3-amino-1,3-diazaspiro[4.6] undecane-2,4-dione} and 3-amino-cyclooctanespiro-4′-imidazolidine-2′,5′-dione (II) {systematic name: 3-amino-1,3-diazaspiro[4.7] dodecane-2,4-dione}, have been determine...
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Published in | Central European journal of chemistry Vol. 7; no. 1; pp. 14 - 19 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Heidelberg
SP Versita
01.03.2009
Versita De Gruyter |
Subjects | |
Online Access | Get full text |
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Summary: | The crystal structures of 3-amino-cycloheptanespiro-4′-imidazolidine-2′,5′-dione (I) {systematic name: 3-amino-1,3-diazaspiro[4.6] undecane-2,4-dione} and 3-amino-cyclooctanespiro-4′-imidazolidine-2′,5′-dione (II) {systematic name: 3-amino-1,3-diazaspiro[4.7] dodecane-2,4-dione}, have been determined. In both compounds the polar hydantoin groups cause molecules to aggregate via N-H...O and N-H...N interactions, forming a layer structure, in which the cycloalkane rings project outwards from the central, more polar, region. The observed molecular structure is compared with that calculated by density functional theory methods. |
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ISSN: | 1895-1066 2391-5420 1644-3624 2391-5420 |
DOI: | 10.2478/s11532-008-0087-3 |