The twofold inter­penetrated three-connected three-dimensional (10,3)-net in 2-amino­ethene-1,1,2-tricarbonitrile

Tafeenko, V.A.; Paseshnichenko, K.A.; Ershov, O.V.; Eremkin, A.V.; Aslanov, L.A.

doi:10.1107/S0108270105016070

Figure 4
An illustration of how molecules of the `light' net form, on the one hand, their own helices and at the same time, owing to interaction between cyano groups, promote the formation of the `dark' helices. As a first approximation, the structure could be represented as follows: atom N1^ix (dark) interacts with atom C4^x (light) in the molecule with symmetry code (x), which forms the six-molecule building block (see Fig. 2

) through atoms N2^x and H1^x; thereby the `light' molecule net is assembled within the `dark' net. Inside the `dark' helix, `light' atoms N1^xiii and N1^xi interact with `dark' atoms C4^xvii and C4^xvi, respectively, as well as with C4^xiii from the `light' net. Concurrently, the molecule at (x), through atoms N3^x and H2^x, forms two `light' helices with opposite handedness in which `dark' molecules are embedded. [Symmetry codes: (i) − $[{1\over 2}]$ + x, −y, 1 + z; (ii) − $[{1\over 2}]$ + x, −1 − y, 1 + z; (iii) x, −1 + y, 1 + z; (iv) $[{3\over 2}]$ − x, y, $[{1\over 2}]$ + z; (v) 1 − x, −y, $[{1\over 2}]$ + z; (vi) $[{1\over 2}]$ − x, y, $[{1\over 2}]$ + z; (vii) −1 + x, −1 + y, 1 + z; (viii) x, y, 1 + z; (ix) 1 − x, −1 − y, $[{1\over 2}]$ + z.]

STRUCTURAL
CHEMISTRY

ISSN: 2053-2296

Volume 61| Part 7| July 2005| Pages o434-o437

doi:10.1107/S0108270105016070

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