Supporting information
Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536807026700/hb2440sup1.cif | |
Structure factor file (CIF format) https://doi.org/10.1107/S1600536807026700/hb2440Isup2.hkl |
CCDC reference: 654703
Complex (I) was synthesized in a solution reaction. NaN3 (0.2 mmol) dissolved in 2 ml water was added to 5 ml aqueous solution of Zn(CH3COO)22H2O (0.1 mmol) with stirring. Then an ethanol solution (5 ml) of 5-aminoisoquinoline (0.2 mmol) was added into the solution and stirred for 5 h. The mixture was filtered and the clear solution was kept at room temperature to evaporate slowly·After one week, light-yellow single crystals suitable for X-ray diffraction were obtained.
The H atoms were geometrically placed (C—H = 0.93 Å, N—H = 0.86 Å) and refined as riding with Uiso(H) = 1.2Ueq(C).
Intense attention has been received to azide complexes due to their diverse structural topologies from discrete molecules to three-dimensional networks and their potential applications in functional materials (Robin & Fromm, 2006; Yaghi et al., 2003). The azido group can act as a monodentate ligand as well as bridging ligand which adopting end-on or end-to-end bridging modes to generate many complexes with interesting structures (Liu et al., 2004; Gao et al., 2006). Here we report a new azide complex using 5-aminoisoquinoline as co-ligand, Zn(C9H8N2)2(N3)2 (I). To our knowledge, no other structurally characterized example of a 5-aminoisoquinoline complex has been documented.
As shown in Figure 1, the Zn(II) atom of (I) is coordinated tetrahedrally by four nitrogen atoms, of which two N-donor atoms are from azide groups and the others are from 5-aminoisoquinoline ligands (Table 1). The Zn—N—N bond angles in (I) compare well to equivalent values in related structures (Li et al., 2006; Miao et al., 2006). The 5-aminoisoquinoline aromatic planes are nearly perpendicular to one another with a dihedral angle of 82.106(x)°. A network of weak N—H···N hydrogen bonds (Table 2) completes the structure (Fig. 2).
For related structures, see: Liu et al. (2004); Gao et al. (2006); Li et al. (2006); Miao et al. (2006).
For related literature, see: Robin & Fromm (2006); Yaghi et al. (2003).
Data collection: SMART (Bruker, 2000); cell refinement: SAINT (Bruker, 2000); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: SHELXTL (Sheldrick, 2000); software used to prepare material for publication: SHELXTL.
Fig. 1. The molecular structure of (I), with displacement ellipsoids drawn at the 30% probability level. H atoms are omitted for clarity | |
Fig. 2. A packing diagram for (I). |
[Zn(N3)2(C9H8N2)2] | F(000) = 1792 |
Mr = 437.78 | Dx = 1.521 Mg m−3 |
Orthorhombic, Pbca | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ac 2ab | Cell parameters from 5531 reflections |
a = 14.4330 (4) Å | θ = 2.8–23.6° |
b = 16.0837 (4) Å | µ = 1.31 mm−1 |
c = 16.4677 (5) Å | T = 273 K |
V = 3822.75 (18) Å3 | Block, light-yellow |
Z = 8 | 0.20 × 0.20 × 0.10 mm |
Bruker SMART CCD diffractometer | 3338 independent reflections |
Radiation source: fine-focus sealed tube | 2560 reflections with I > \2s(I) |
Graphite monochromator | Rint = 0.036 |
ω scans | θmax = 25.0°, θmin = 2.3° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −17→17 |
Tmin = 0.779, Tmax = 0.880 | k = −19→18 |
22267 measured reflections | l = −19→18 |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.029 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.077 | H-atom parameters constrained |
S = 1.02 | w = 1/[σ2(Fo2) + (0.0317P)2 + 1.8397P] where P = (Fo2 + 2Fc2)/3 |
3338 reflections | (Δ/σ)max = 0.001 |
262 parameters | Δρmax = 0.27 e Å−3 |
0 restraints | Δρmin = −0.28 e Å−3 |
[Zn(N3)2(C9H8N2)2] | V = 3822.75 (18) Å3 |
Mr = 437.78 | Z = 8 |
Orthorhombic, Pbca | Mo Kα radiation |
a = 14.4330 (4) Å | µ = 1.31 mm−1 |
b = 16.0837 (4) Å | T = 273 K |
c = 16.4677 (5) Å | 0.20 × 0.20 × 0.10 mm |
Bruker SMART CCD diffractometer | 3338 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 2560 reflections with I > \2s(I) |
Tmin = 0.779, Tmax = 0.880 | Rint = 0.036 |
22267 measured reflections |
R[F2 > 2σ(F2)] = 0.029 | 0 restraints |
wR(F2) = 0.077 | H-atom parameters constrained |
S = 1.02 | Δρmax = 0.27 e Å−3 |
3338 reflections | Δρmin = −0.28 e Å−3 |
262 parameters |
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes. |
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. |
x | y | z | Uiso*/Ueq | ||
Zn1 | 0.94645 (2) | 0.032733 (17) | 0.680773 (16) | 0.04710 (11) | |
C1 | 0.89609 (17) | 0.02149 (15) | 0.85389 (15) | 0.0470 (6) | |
H1 | 0.8616 | −0.0239 | 0.8364 | 0.056* | |
C2 | 0.89393 (16) | 0.04197 (14) | 0.93744 (14) | 0.0435 (6) | |
C3 | 0.83983 (19) | −0.00398 (18) | 0.99208 (17) | 0.0609 (7) | |
H3 | 0.8046 | −0.0488 | 0.9742 | 0.073* | |
C4 | 0.8399 (2) | 0.01836 (18) | 1.07239 (17) | 0.0651 (8) | |
H4 | 0.8037 | −0.0112 | 1.1092 | 0.078* | |
C5 | 0.89341 (19) | 0.08466 (17) | 1.09951 (16) | 0.0574 (7) | |
H5 | 0.8923 | 0.0981 | 1.1544 | 0.069* | |
C6 | 0.94764 (17) | 0.13088 (15) | 1.04849 (15) | 0.0490 (6) | |
C7 | 0.94798 (16) | 0.11029 (14) | 0.96325 (14) | 0.0415 (5) | |
C8 | 0.99863 (18) | 0.15350 (15) | 0.90421 (15) | 0.0507 (6) | |
H8 | 1.0346 | 0.1990 | 0.9192 | 0.061* | |
C9 | 0.99554 (19) | 0.12939 (15) | 0.82568 (15) | 0.0517 (6) | |
H9 | 1.0298 | 0.1591 | 0.7877 | 0.062* | |
C10 | 0.80985 (18) | 0.16731 (15) | 0.64571 (14) | 0.0496 (6) | |
H10 | 0.7998 | 0.1662 | 0.7015 | 0.060* | |
C11 | 0.76044 (17) | 0.22168 (14) | 0.60011 (14) | 0.0457 (6) | |
H11 | 0.7184 | 0.2573 | 0.6250 | 0.055* | |
C12 | 0.77234 (16) | 0.22461 (13) | 0.51551 (13) | 0.0393 (5) | |
C13 | 0.72056 (17) | 0.27742 (14) | 0.46242 (14) | 0.0435 (6) | |
C14 | 0.73427 (19) | 0.26955 (16) | 0.38043 (15) | 0.0558 (7) | |
H14 | 0.6997 | 0.3025 | 0.3453 | 0.067* | |
C15 | 0.7983 (2) | 0.21394 (17) | 0.34800 (16) | 0.0631 (8) | |
H15 | 0.8048 | 0.2102 | 0.2919 | 0.076* | |
C16 | 0.85134 (19) | 0.16508 (16) | 0.39660 (15) | 0.0557 (7) | |
H16 | 0.8955 | 0.1296 | 0.3745 | 0.067* | |
C17 | 0.83801 (16) | 0.16920 (14) | 0.48121 (13) | 0.0412 (5) | |
C18 | 0.88677 (17) | 0.11636 (14) | 0.53447 (15) | 0.0474 (6) | |
H18 | 0.9309 | 0.0808 | 0.5124 | 0.057* | |
N1 | 0.89962 (19) | −0.08021 (14) | 0.66187 (14) | 0.0667 (7) | |
N2 | 0.91573 (16) | −0.13681 (14) | 0.70470 (13) | 0.0548 (6) | |
N3 | 0.9294 (2) | −0.19444 (16) | 0.74305 (16) | 0.0981 (11) | |
N4 | 1.07524 (17) | 0.04730 (15) | 0.64174 (15) | 0.0639 (6) | |
N5 | 1.13908 (18) | 0.03513 (14) | 0.68614 (14) | 0.0574 (6) | |
N6 | 1.2017 (2) | 0.0247 (2) | 0.72680 (17) | 0.0886 (9) | |
N7 | 0.94411 (13) | 0.06303 (12) | 0.79965 (12) | 0.0447 (5) | |
N8 | 0.99928 (17) | 0.19602 (15) | 1.07584 (13) | 0.0684 (7) | |
H8A | 0.9983 | 0.2091 | 1.1265 | 0.082* | |
H8B | 1.0328 | 0.2241 | 1.0425 | 0.082* | |
N9 | 0.87372 (14) | 0.11419 (11) | 0.61346 (11) | 0.0447 (5) | |
N10 | 0.65323 (15) | 0.32964 (13) | 0.49322 (13) | 0.0568 (6) | |
H10A | 0.6189 | 0.3580 | 0.4608 | 0.068* | |
H10B | 0.6456 | 0.3338 | 0.5449 | 0.068* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Zn1 | 0.0574 (2) | 0.04234 (17) | 0.04158 (18) | 0.00293 (13) | −0.00621 (13) | 0.00430 (12) |
C1 | 0.0435 (14) | 0.0449 (14) | 0.0526 (16) | −0.0007 (11) | −0.0049 (12) | 0.0029 (11) |
C2 | 0.0377 (13) | 0.0431 (13) | 0.0495 (15) | 0.0018 (11) | 0.0000 (11) | 0.0102 (11) |
C3 | 0.0577 (17) | 0.0577 (16) | 0.0674 (19) | −0.0124 (14) | 0.0064 (14) | 0.0087 (14) |
C4 | 0.0646 (19) | 0.0693 (19) | 0.0614 (19) | −0.0035 (15) | 0.0146 (15) | 0.0156 (15) |
C5 | 0.0613 (17) | 0.0665 (18) | 0.0443 (15) | 0.0104 (15) | 0.0089 (13) | 0.0099 (13) |
C6 | 0.0482 (14) | 0.0503 (15) | 0.0484 (15) | 0.0069 (12) | −0.0036 (12) | 0.0027 (12) |
C7 | 0.0375 (12) | 0.0429 (13) | 0.0442 (14) | 0.0045 (11) | −0.0029 (10) | 0.0052 (10) |
C8 | 0.0554 (16) | 0.0467 (14) | 0.0502 (16) | −0.0116 (12) | −0.0006 (12) | 0.0022 (12) |
C9 | 0.0615 (17) | 0.0483 (15) | 0.0454 (15) | −0.0086 (13) | 0.0026 (12) | 0.0048 (12) |
C10 | 0.0606 (16) | 0.0529 (15) | 0.0353 (13) | 0.0029 (13) | 0.0003 (12) | 0.0017 (11) |
C11 | 0.0507 (15) | 0.0467 (14) | 0.0397 (13) | 0.0051 (11) | 0.0006 (11) | −0.0031 (11) |
C12 | 0.0409 (13) | 0.0364 (12) | 0.0405 (13) | −0.0052 (10) | −0.0026 (10) | 0.0010 (10) |
C13 | 0.0470 (14) | 0.0418 (13) | 0.0418 (14) | −0.0032 (11) | −0.0027 (11) | 0.0012 (11) |
C14 | 0.0693 (18) | 0.0540 (16) | 0.0440 (15) | 0.0074 (14) | −0.0073 (13) | 0.0095 (12) |
C15 | 0.089 (2) | 0.0653 (18) | 0.0347 (14) | 0.0120 (16) | 0.0043 (14) | 0.0037 (13) |
C16 | 0.0677 (18) | 0.0547 (16) | 0.0448 (15) | 0.0113 (13) | 0.0079 (13) | 0.0024 (12) |
C17 | 0.0467 (14) | 0.0388 (13) | 0.0382 (13) | −0.0028 (11) | −0.0007 (11) | 0.0024 (10) |
C18 | 0.0510 (15) | 0.0436 (14) | 0.0477 (15) | 0.0036 (11) | 0.0006 (11) | 0.0014 (11) |
N1 | 0.0943 (19) | 0.0471 (14) | 0.0588 (14) | −0.0042 (13) | −0.0196 (13) | 0.0005 (12) |
N2 | 0.0735 (15) | 0.0459 (13) | 0.0449 (13) | −0.0026 (11) | 0.0015 (11) | −0.0107 (11) |
N3 | 0.184 (3) | 0.0486 (15) | 0.0620 (16) | 0.0097 (18) | −0.0026 (19) | 0.0045 (14) |
N4 | 0.0618 (15) | 0.0745 (16) | 0.0554 (15) | 0.0016 (13) | 0.0062 (12) | 0.0147 (12) |
N5 | 0.0574 (15) | 0.0640 (15) | 0.0506 (14) | −0.0022 (12) | 0.0126 (13) | 0.0046 (12) |
N6 | 0.0590 (17) | 0.138 (3) | 0.0689 (18) | 0.0028 (17) | 0.0005 (14) | 0.0083 (17) |
N7 | 0.0482 (12) | 0.0424 (11) | 0.0435 (11) | 0.0007 (9) | −0.0049 (9) | 0.0042 (9) |
N8 | 0.0839 (18) | 0.0761 (16) | 0.0451 (13) | −0.0167 (14) | −0.0014 (12) | −0.0071 (12) |
N9 | 0.0529 (12) | 0.0421 (11) | 0.0391 (12) | 0.0009 (9) | −0.0047 (9) | 0.0039 (9) |
N10 | 0.0636 (14) | 0.0598 (13) | 0.0471 (12) | 0.0182 (11) | −0.0054 (11) | 0.0047 (10) |
Zn1—N1 | 1.963 (2) | C10—H10 | 0.9300 |
Zn1—N4 | 1.981 (2) | C11—C12 | 1.404 (3) |
Zn1—N9 | 2.0118 (19) | C11—H11 | 0.9300 |
Zn1—N7 | 2.018 (2) | C12—C17 | 1.418 (3) |
C1—N7 | 1.313 (3) | C12—C13 | 1.430 (3) |
C1—C2 | 1.415 (3) | C13—C14 | 1.370 (3) |
C1—H1 | 0.9300 | C13—N10 | 1.381 (3) |
C2—C3 | 1.402 (3) | C14—C15 | 1.392 (4) |
C2—C7 | 1.413 (3) | C14—H14 | 0.9300 |
C3—C4 | 1.370 (4) | C15—C16 | 1.358 (4) |
C3—H3 | 0.9300 | C15—H15 | 0.9300 |
C4—C5 | 1.391 (4) | C16—C17 | 1.408 (3) |
C4—H4 | 0.9300 | C16—H16 | 0.9300 |
C5—C6 | 1.368 (3) | C17—C18 | 1.409 (3) |
C5—H5 | 0.9300 | C18—N9 | 1.315 (3) |
C6—N8 | 1.362 (3) | C18—H18 | 0.9300 |
C6—C7 | 1.442 (3) | N1—N2 | 1.175 (3) |
C7—C8 | 1.401 (3) | N2—N3 | 1.139 (3) |
C8—C9 | 1.351 (3) | N4—N5 | 1.193 (3) |
C8—H8 | 0.9300 | N5—N6 | 1.137 (3) |
C9—N7 | 1.369 (3) | N8—H8A | 0.8600 |
C9—H9 | 0.9300 | N8—H8B | 0.8600 |
C10—C11 | 1.356 (3) | N10—H10A | 0.8600 |
C10—N9 | 1.364 (3) | N10—H10B | 0.8600 |
N1—Zn1—N4 | 112.41 (11) | C12—C11—H11 | 119.8 |
N1—Zn1—N9 | 109.61 (9) | C11—C12—C17 | 117.1 (2) |
N4—Zn1—N9 | 103.52 (9) | C11—C12—C13 | 124.2 (2) |
N1—Zn1—N7 | 111.81 (9) | C17—C12—C13 | 118.6 (2) |
N4—Zn1—N7 | 107.58 (9) | C14—C13—N10 | 121.3 (2) |
N9—Zn1—N7 | 111.63 (8) | C14—C13—C12 | 118.2 (2) |
N7—C1—C2 | 123.7 (2) | N10—C13—C12 | 120.3 (2) |
N7—C1—H1 | 118.2 | C13—C14—C15 | 122.2 (2) |
C2—C1—H1 | 118.2 | C13—C14—H14 | 118.9 |
C3—C2—C7 | 121.6 (2) | C15—C14—H14 | 118.9 |
C3—C2—C1 | 120.9 (2) | C16—C15—C14 | 121.3 (2) |
C7—C2—C1 | 117.5 (2) | C16—C15—H15 | 119.3 |
C4—C3—C2 | 118.8 (3) | C14—C15—H15 | 119.3 |
C4—C3—H3 | 120.6 | C15—C16—C17 | 118.6 (2) |
C2—C3—H3 | 120.6 | C15—C16—H16 | 120.7 |
C3—C4—C5 | 120.7 (3) | C17—C16—H16 | 120.7 |
C3—C4—H4 | 119.6 | C16—C17—C18 | 121.3 (2) |
C5—C4—H4 | 119.6 | C16—C17—C12 | 121.0 (2) |
C6—C5—C4 | 122.5 (3) | C18—C17—C12 | 117.7 (2) |
C6—C5—H5 | 118.7 | N9—C18—C17 | 124.1 (2) |
C4—C5—H5 | 118.7 | N9—C18—H18 | 118.0 |
N8—C6—C5 | 121.9 (2) | C17—C18—H18 | 118.0 |
N8—C6—C7 | 119.8 (2) | N2—N1—Zn1 | 123.62 (19) |
C5—C6—C7 | 118.4 (2) | N3—N2—N1 | 176.3 (3) |
C8—C7—C2 | 117.7 (2) | N5—N4—Zn1 | 120.44 (19) |
C8—C7—C6 | 124.3 (2) | N6—N5—N4 | 177.9 (3) |
C2—C7—C6 | 118.0 (2) | C1—N7—C9 | 118.0 (2) |
C9—C8—C7 | 120.3 (2) | C1—N7—Zn1 | 123.09 (17) |
C9—C8—H8 | 119.8 | C9—N7—Zn1 | 118.89 (16) |
C7—C8—H8 | 119.8 | C6—N8—H8A | 120.0 |
C8—C9—N7 | 122.8 (2) | C6—N8—H8B | 120.0 |
C8—C9—H9 | 118.6 | H8A—N8—H8B | 120.0 |
N7—C9—H9 | 118.6 | C18—N9—C10 | 117.7 (2) |
C11—C10—N9 | 122.9 (2) | C18—N9—Zn1 | 119.19 (16) |
C11—C10—H10 | 118.5 | C10—N9—Zn1 | 123.08 (15) |
N9—C10—H10 | 118.5 | C13—N10—H10A | 120.0 |
C10—C11—C12 | 120.5 (2) | C13—N10—H10B | 120.0 |
C10—C11—H11 | 119.8 | H10A—N10—H10B | 120.0 |
D—H···A | D—H | H···A | D···A | D—H···A |
N10—H10B···N1i | 0.86 | 2.46 | 3.225 (3) | 148 |
N10—H10A···N4ii | 0.86 | 2.36 | 3.182 (3) | 160 |
N8—H8B···N10iii | 0.86 | 2.50 | 3.294 (3) | 154 |
N8—H8A···N3iv | 0.86 | 2.40 | 3.155 (4) | 147 |
Symmetry codes: (i) −x+3/2, y+1/2, z; (ii) x−1/2, −y+1/2, −z+1; (iii) x+1/2, y, −z+3/2; (iv) −x+2, −y, −z+2. |
Experimental details
Crystal data | |
Chemical formula | [Zn(N3)2(C9H8N2)2] |
Mr | 437.78 |
Crystal system, space group | Orthorhombic, Pbca |
Temperature (K) | 273 |
a, b, c (Å) | 14.4330 (4), 16.0837 (4), 16.4677 (5) |
V (Å3) | 3822.75 (18) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 1.31 |
Crystal size (mm) | 0.20 × 0.20 × 0.10 |
Data collection | |
Diffractometer | Bruker SMART CCD |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.779, 0.880 |
No. of measured, independent and observed [I > \2s(I)] reflections | 22267, 3338, 2560 |
Rint | 0.036 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.029, 0.077, 1.02 |
No. of reflections | 3338 |
No. of parameters | 262 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.27, −0.28 |
Computer programs: SMART (Bruker, 2000), SAINT (Bruker, 2000), SAINT, SHELXS97 (Sheldrick, 1997), SHELXL97 (Sheldrick, 1997), SHELXTL (Sheldrick, 2000), SHELXTL.
Zn1—N1 | 1.963 (2) | Zn1—N9 | 2.0118 (19) |
Zn1—N4 | 1.981 (2) | Zn1—N7 | 2.018 (2) |
N2—N1—Zn1 | 123.62 (19) | N5—N4—Zn1 | 120.44 (19) |
D—H···A | D—H | H···A | D···A | D—H···A |
N10—H10B···N1i | 0.86 | 2.46 | 3.225 (3) | 148 |
N10—H10A···N4ii | 0.86 | 2.36 | 3.182 (3) | 160 |
N8—H8B···N10iii | 0.86 | 2.50 | 3.294 (3) | 154 |
N8—H8A···N3iv | 0.86 | 2.40 | 3.155 (4) | 147 |
Symmetry codes: (i) −x+3/2, y+1/2, z; (ii) x−1/2, −y+1/2, −z+1; (iii) x+1/2, y, −z+3/2; (iv) −x+2, −y, −z+2. |
Intense attention has been received to azide complexes due to their diverse structural topologies from discrete molecules to three-dimensional networks and their potential applications in functional materials (Robin & Fromm, 2006; Yaghi et al., 2003). The azido group can act as a monodentate ligand as well as bridging ligand which adopting end-on or end-to-end bridging modes to generate many complexes with interesting structures (Liu et al., 2004; Gao et al., 2006). Here we report a new azide complex using 5-aminoisoquinoline as co-ligand, Zn(C9H8N2)2(N3)2 (I). To our knowledge, no other structurally characterized example of a 5-aminoisoquinoline complex has been documented.
As shown in Figure 1, the Zn(II) atom of (I) is coordinated tetrahedrally by four nitrogen atoms, of which two N-donor atoms are from azide groups and the others are from 5-aminoisoquinoline ligands (Table 1). The Zn—N—N bond angles in (I) compare well to equivalent values in related structures (Li et al., 2006; Miao et al., 2006). The 5-aminoisoquinoline aromatic planes are nearly perpendicular to one another with a dihedral angle of 82.106(x)°. A network of weak N—H···N hydrogen bonds (Table 2) completes the structure (Fig. 2).