Figure 4
Part of the crystal structure of (I), viewed down the a axis, showing the networks of hydrogen bonding (dashed lines). A representative set of O atoms are labelled as in Table 2. The minor disordered oxalate component (C261, O61 and O71) and other H atoms attached to C atoms have been omitted for clarity. [Symmetry codes: (i) x, y, z − 1; (ii) 2 − x, 1 − y, 1 − z; (iii) 1 − x, + y, − z; (iv) x, − y, + z.] |