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Structure, Conformation and Hydrogen Bonding of Two Amino-cycloalkanespiro-5-hydantoins by Petar Todorov; Rosica Petrova; Emilia Naydenova; Boris Shivachev is a Chemistry article available to read on EtoBox.

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## Abstract 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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Author

Petar Todorov; Rosica Petrova; Emilia Naydenova; Boris Shivachev

Publisher

Walter de Gruyter GmbH

Published

2009

Language

EN

Field

Chemistry (Physical Sciences)