Figure 2
(a) The arrangement of layers in the crystal packing of (I), viewed along the c axis; (b) the hydrogen-bonding interactions between neighbouring chains in the layers of (I) (green dotted lines show hydrogen bonds in a chain and magenta dotted lines show hydrogen bonds between chains). [Symmetry codes: (i) −x + 1, −y + 1, −z + 1; (ii) x, −y + , z − ; (iii) −x + 1, y + , −z + .] |