| Literature DB >> 29250375 |
Tristen E Moyaert1, Christina Paul1, Weibin Chen1, Amy A Sarjeant2, Louise N Dawe1.
Abstract
A copper(II) complex of the non-symmetric bidentate ligand 2-{[6-(di-methyl-amino)-pyrimidin-4-yl]sulfan-yl}pyrimidine-4,6-di-amine (L1) is reported. The single-crystal X-ray structure of aqua-[aqua/chlorido-(0.49/0.51)](2-{[6-(di-methyl-amino)-pyrimidin-4-yl]sulfan-yl}pyrimidine-4,6-di-amine)-copper(II) 0.49-chloride 1.51-hydrate, [CuCl1.51(C10H13N7S)(H2O)1.49]Cl0.49·1.51H2O or [(L1)Cl1.51(H2O)1.49Cu]0.49Cl·1.51H2O, exhibits distorted square-pyramidal geometry around the metal centre, with disorder in the axial position, occupied by chloride or water. The six-membered metal-chelate ring is in a boat conformation, and short inter-molecular S⋯S inter-actions are observed. In addition to its capacity for bidentate metal coordination, the ligand has the ability to engage in further supra-molecular inter-actions as both a hydrogen-bond donor and acceptor, and multiple inter-actions with lattice solvent water mol-ecules are present in the reported structure.Entities:
Keywords: copper(II); crystal structure; disorder; non-symmetric sulfanyl ligand
Year: 2017 PMID: 29250375 PMCID: PMC5730312 DOI: 10.1107/S205698901701338X
Source DB: PubMed Journal: Acta Crystallogr E Crystallogr Commun
Figure 1Boat-shaped chelate ring for bidentate coordination of thio-bis-(pyridin-2-yl) or bis-(pyrimidin-2-yl) ligands.
Figure 2Asymmetric unit for [(C10H13N7S)Cl1.51(H2O)1.49Cu]0.49Cl·1.51H2O, with 50% displacement ellipsoids. (a) Disordered atoms with 0.51-occupancy; (b) disordered atoms with 0.49-occupancy. All atoms in (a) and (b) are identical, except those labelled in (b). Hydrogen bonds are represented by dashed lines.
Selected geometric parameters (Å, °)
| Cu1—Cl1 | 2.2689 (7) | Cu1—N4 | 1.996 (2) |
| Cu1—Cl2 | 2.5273 (19) | S1—C4 | 1.777 (2) |
| Cu1—O1 | 2.0158 (19) | S1—C5 | 1.774 (3) |
| Cu1—O2 | 2.229 (6) | N1—C4 | 1.332 (3) |
| Cu1—N1 | 2.034 (2) | N4—C5 | 1.353 (3) |
| Cl1—Cu1—Cl2 | 92.89 (5) | N1—Cu1—O2 | 101.55 (18) |
| O1—Cu1—Cl1 | 91.94 (6) | N4—Cu1—Cl1 | 171.10 (6) |
| O1—Cu1—Cl2 | 92.69 (7) | N4—Cu1—Cl2 | 95.20 (8) |
| O1—Cu1—O2 | 100.64 (18) | N4—Cu1—O1 | 83.98 (8) |
| O1—Cu1—N1 | 157.01 (8) | N4—Cu1—O2 | 95.5 (2) |
| O2—Cu1—Cl1 | 93.1 (2) | N4—Cu1—N1 | 87.99 (8) |
| N1—Cu1—Cl1 | 92.81 (6) | C5—S1—C4 | 104.53 (12) |
| N1—Cu1—Cl2 | 109.51 (8) |
Hydrogen-bond geometry (Å, °)
|
|
| H⋯ |
|
|
|---|---|---|---|---|
| O1—H1 | 0.92 (1) | 1.99 (2) | 2.897 (3) | 170 (3) |
| O1—H1 | 0.91 (2) | 1.82 (6) | 2.71 (6) | 167 (4) |
| O1—H1 | 0.91 (2) | 1.80 (6) | 2.69 (6) | 162 (4) |
| O3—H3 | 0.92 | 2.28 | 3.200 (7) | 176 |
| O3—H3 | 0.93 | 2.17 | 2.94 (6) | 139 |
| O4—H4 | 0.91 | 2.25 | 3.07 (6) | 150 |
| O2—H2 | 0.91 | 2.33 | 3.177 (7) | 154 |
| O5—H5 | 0.93 | 2.02 | 2.83 (6) | 145 |
| N5—H5 | 0.84 (3) | 2.46 (3) | 3.295 (3) | 172 (3) |
| N5—H5 | 0.84 (3) | 2.07 (3) | 2.903 (7) | 167 (3) |
| N5—H5 | 0.79 (3) | 2.56 (4) | 3.353 (3) | 173 (3) |
| N6—H6 | 0.80 (4) | 2.41 (4) | 3.187 (4) | 165 (3) |
| N6—H6 | 0.80 (4) | 2.32 (4) | 3.094 (8) | 163 (3) |
Symmetry codes: (i) ; (ii) ; (iii) .
Figure 3Packed unit cell for [(L1)Cl1.51(H2O)1.49Cu]0.49Cl·1.51H2O. Only atoms in the major occupancy component are shown. All solvent water molecules and hydrogen atoms have been omitted for clarity.
Experimental details
| Crystal data | |
| Chemical formula | [CuCl1.51(C10H13N7S)(H2O)1.49]·Cl0.49·1.51H2O |
|
| 451.82 |
| Crystal system, space group | Monoclinic, |
| Temperature (K) | 110 |
|
| 11.42069 (19), 7.23911 (12), 21.6990 (3) |
| β (°) | 103.1543 (16) |
|
| 1746.91 (5) |
|
| 4 |
| Radiation type | Cu |
| μ (mm−1) | 5.94 |
| Crystal size (mm) | 0.27 × 0.19 × 0.17 |
| Data collection | |
| Diffractometer | Bruker APEXII CCD with |
| Absorption correction | Multi-scan ( |
|
| 0.034, 0.115 |
| No. of measured, independent and observed [ | 22331, 3000, 2523 |
|
| 0.051 |
| (sin θ/λ)max (Å−1) | 0.594 |
| Refinement | |
|
| 0.030, 0.079, 1.04 |
| No. of reflections | 3000 |
| No. of parameters | 261 |
| No. of restraints | 47 |
| H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
| Δρmax, Δρmin (e Å−3) | 0.32, −0.32 |
Computer programs: APEX2 (Bruker, 2012 ▸), CrysAlis PRO (Rigaku OD, 2015 ▸), SHELXT (Sheldrick, 2015a ▸), SHELXL2016 (Sheldrick, 2015b ▸) and OLEX2 (Dolomanov et al., 2009 ▸).
| [CuCl1.51(C10H13N7S)(H2O)1.49]·0.49Cl·1.51H2O | |
| Monoclinic, | Cu |
| Cell parameters from 13698 reflections | |
| θ = 4.0–66.3° | |
| µ = 5.94 mm−1 | |
| β = 103.1543 (16)° | |
| Prism, green | |
| 0.27 × 0.19 × 0.17 mm |
| Bruker APEXII CCD with CrysAlis PRO imported SAXI images diffractometer | 3000 independent reflections |
| Radiation source: fine-focus sealed X-ray tube, Enhance (Cu) X-ray Source | 2523 reflections with |
| Graphite monochromator | |
| ω and φ scans | θmax = 66.4°, θmin = 4.0° |
| Absorption correction: multi-scan (CrysAlis PRO; Rigaku Oxford Diffraction, 2015) | |
| 22331 measured reflections |
| Refinement on | 47 restraints |
| Least-squares matrix: full | Hydrogen site location: mixed |
| H atoms treated by a mixture of independent and constrained refinement | |
| (Δ/σ)max = 0.001 | |
| 3000 reflections | Δρmax = 0.32 e Å−3 |
| 261 parameters | Δρmin = −0.32 e Å−3 |
| Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes. |
| Occ. (<1) | |||||
| Cu1 | 0.65886 (3) | 0.87641 (5) | 0.36726 (2) | 0.02056 (12) | |
| Cl1 | 0.59471 (5) | 0.68609 (9) | 0.43587 (3) | 0.02412 (16) | |
| Cl2 | 0.81961 (17) | 1.0193 (3) | 0.45364 (9) | 0.0250 (6) | 0.511 (5) |
| Cl3 | 0.9316 (3) | 0.7674 (6) | 0.55061 (13) | 0.0648 (12) | 0.489 (5) |
| S1 | 0.47778 (6) | 0.94220 (9) | 0.22968 (3) | 0.02244 (16) | |
| O1 | 0.77219 (16) | 0.6829 (3) | 0.34783 (8) | 0.0256 (4) | |
| H1A | 0.743 (3) | 0.635 (4) | 0.3084 (9) | 0.051 (11)* | |
| H1B | 0.790 (3) | 0.586 (4) | 0.3750 (15) | 0.062 (12)* | |
| O3 | 0.9002 (6) | 0.6924 (9) | 0.5536 (4) | 0.0305 (15) | 0.511 (5) |
| H3A | 0.873556 | 0.784224 | 0.524170 | 0.046* | 0.511 (5) |
| H3B | 0.982596 | 0.704284 | 0.569168 | 0.046* | 0.511 (5) |
| O4 | 1.148 (5) | 0.571 (8) | 0.560 (3) | 0.056 (3) | 0.511 (5) |
| H4A | 1.164621 | 0.489914 | 0.531128 | 0.084* | 0.511 (5) |
| H4B | 1.218311 | 0.634714 | 0.578705 | 0.084* | 0.511 (5) |
| O2 | 0.7814 (6) | 1.0316 (10) | 0.4446 (3) | 0.0250 (6) | 0.489 (5) |
| H2A | 0.816574 | 1.128467 | 0.429387 | 0.038* | 0.489 (5) |
| H2B | 0.842833 | 0.962117 | 0.467637 | 0.038* | 0.489 (5) |
| O5 | 1.141 (5) | 0.553 (9) | 0.557 (3) | 0.056 (3) | 0.489 (5) |
| H5C | 1.094042 | 0.658743 | 0.549583 | 0.084* | 0.489 (5) |
| H5D | 1.164982 | 0.487073 | 0.526489 | 0.084* | 0.489 (5) |
| N1 | 0.50737 (19) | 1.0333 (3) | 0.35292 (9) | 0.0214 (5) | |
| N2 | 0.31504 (19) | 1.0711 (3) | 0.28275 (10) | 0.0229 (5) | |
| N3 | 0.86159 (19) | 1.1243 (3) | 0.25035 (10) | 0.0238 (5) | |
| N4 | 0.70468 (19) | 1.0147 (3) | 0.29669 (9) | 0.0213 (5) | |
| N5 | 0.5433 (2) | 1.1471 (4) | 0.45509 (11) | 0.0286 (5) | |
| H5A | 0.614 (3) | 1.106 (5) | 0.4577 (15) | 0.034* | |
| H5B | 0.517 (3) | 1.185 (5) | 0.4834 (16) | 0.034* | |
| N6 | 0.1509 (2) | 1.1695 (4) | 0.32017 (14) | 0.0321 (6) | |
| H6A | 0.122 (3) | 1.202 (5) | 0.3488 (17) | 0.033 (9)* | |
| H6B | 0.109 (3) | 1.134 (5) | 0.2867 (17) | 0.037 (10)* | |
| N7 | 0.8262 (2) | 1.1817 (3) | 0.14302 (10) | 0.0266 (5) | |
| C1 | 0.4646 (2) | 1.1146 (4) | 0.40076 (12) | 0.0232 (6) | |
| C2 | 0.3434 (2) | 1.1595 (4) | 0.39165 (12) | 0.0250 (6) | |
| H2 | 0.312207 | 1.208633 | 0.425222 | 0.030* | |
| C3 | 0.2696 (2) | 1.1307 (4) | 0.33244 (13) | 0.0246 (6) | |
| C4 | 0.4299 (2) | 1.0264 (3) | 0.29687 (11) | 0.0204 (5) | |
| C5 | 0.6270 (2) | 1.0255 (3) | 0.23952 (11) | 0.0205 (5) | |
| C6 | 0.6605 (2) | 1.0850 (3) | 0.18649 (11) | 0.0203 (5) | |
| H6 | 0.604065 | 1.095192 | 0.147050 | 0.024* | |
| C7 | 0.7828 (2) | 1.1307 (4) | 0.19266 (12) | 0.0229 (6) | |
| C8 | 0.8173 (2) | 1.0684 (4) | 0.29833 (12) | 0.0235 (6) | |
| H8 | 0.871669 | 1.066177 | 0.338604 | 0.028* | |
| C9 | 0.7483 (3) | 1.1897 (4) | 0.07954 (13) | 0.0342 (7) | |
| H9A | 0.729605 | 1.063940 | 0.063603 | 0.051* | |
| H9B | 0.789517 | 1.256260 | 0.051290 | 0.051* | |
| H9C | 0.673663 | 1.254206 | 0.081154 | 0.051* | |
| C10 | 0.9543 (3) | 1.2111 (5) | 0.14952 (14) | 0.0360 (7) | |
| H10A | 0.984405 | 1.295187 | 0.184969 | 0.054* | |
| H10B | 0.968239 | 1.265239 | 0.110432 | 0.054* | |
| H10C | 0.996500 | 1.092607 | 0.157550 | 0.054* |
| Cu1 | 0.0206 (2) | 0.0275 (2) | 0.0147 (2) | 0.00178 (16) | 0.00640 (14) | 0.00253 (14) |
| Cl1 | 0.0240 (3) | 0.0325 (3) | 0.0171 (3) | 0.0027 (3) | 0.0072 (2) | 0.0045 (2) |
| Cl2 | 0.0180 (12) | 0.0367 (7) | 0.0183 (8) | 0.0039 (8) | −0.0002 (7) | 0.0004 (5) |
| Cl3 | 0.055 (2) | 0.110 (3) | 0.0285 (11) | 0.0397 (19) | 0.0078 (11) | −0.0013 (16) |
| S1 | 0.0219 (3) | 0.0293 (3) | 0.0168 (3) | −0.0034 (3) | 0.0060 (2) | −0.0018 (2) |
| O1 | 0.0215 (10) | 0.0351 (11) | 0.0208 (10) | 0.0028 (8) | 0.0059 (8) | 0.0012 (8) |
| O3 | 0.021 (3) | 0.038 (3) | 0.035 (3) | 0.007 (2) | 0.011 (2) | 0.012 (2) |
| O4 | 0.080 (5) | 0.054 (8) | 0.034 (4) | 0.022 (4) | 0.013 (3) | 0.009 (4) |
| O2 | 0.0180 (12) | 0.0367 (7) | 0.0183 (8) | 0.0039 (8) | −0.0002 (7) | 0.0004 (5) |
| O5 | 0.080 (5) | 0.054 (8) | 0.034 (4) | 0.022 (4) | 0.013 (3) | 0.009 (4) |
| N1 | 0.0239 (11) | 0.0268 (12) | 0.0149 (10) | 0.0019 (9) | 0.0075 (9) | 0.0032 (9) |
| N2 | 0.0216 (11) | 0.0266 (12) | 0.0209 (11) | −0.0009 (9) | 0.0059 (9) | 0.0051 (9) |
| N3 | 0.0212 (11) | 0.0319 (12) | 0.0188 (11) | −0.0002 (10) | 0.0055 (9) | 0.0019 (9) |
| N4 | 0.0212 (11) | 0.0276 (12) | 0.0156 (10) | 0.0006 (9) | 0.0051 (8) | −0.0001 (8) |
| N5 | 0.0288 (13) | 0.0421 (15) | 0.0162 (11) | 0.0084 (11) | 0.0080 (10) | −0.0024 (10) |
| N6 | 0.0233 (13) | 0.0439 (16) | 0.0306 (15) | 0.0030 (11) | 0.0092 (12) | 0.0048 (12) |
| N7 | 0.0251 (12) | 0.0394 (14) | 0.0175 (11) | −0.0014 (10) | 0.0092 (9) | 0.0033 (9) |
| C1 | 0.0276 (14) | 0.0244 (14) | 0.0199 (13) | 0.0024 (11) | 0.0100 (11) | 0.0068 (10) |
| C2 | 0.0285 (15) | 0.0282 (14) | 0.0213 (13) | 0.0046 (11) | 0.0117 (11) | 0.0054 (10) |
| C3 | 0.0253 (14) | 0.0234 (14) | 0.0277 (14) | 0.0016 (11) | 0.0113 (11) | 0.0101 (11) |
| C4 | 0.0236 (14) | 0.0200 (13) | 0.0191 (12) | −0.0006 (11) | 0.0083 (10) | 0.0044 (10) |
| C5 | 0.0222 (13) | 0.0215 (13) | 0.0189 (12) | 0.0023 (10) | 0.0068 (10) | −0.0024 (10) |
| C6 | 0.0222 (13) | 0.0251 (14) | 0.0144 (12) | 0.0013 (11) | 0.0057 (10) | 0.0001 (10) |
| C7 | 0.0275 (14) | 0.0234 (13) | 0.0196 (13) | 0.0005 (11) | 0.0091 (11) | −0.0029 (10) |
| C8 | 0.0238 (14) | 0.0292 (14) | 0.0174 (12) | 0.0023 (11) | 0.0047 (10) | 0.0013 (10) |
| C9 | 0.0341 (16) | 0.0502 (18) | 0.0193 (14) | −0.0019 (14) | 0.0079 (12) | 0.0053 (12) |
| C10 | 0.0254 (15) | 0.057 (2) | 0.0291 (15) | −0.0059 (14) | 0.0138 (12) | 0.0002 (14) |
| Cu1—Cl1 | 2.2689 (7) | N4—C5 | 1.353 (3) |
| Cu1—Cl2 | 2.5273 (19) | N4—C8 | 1.336 (3) |
| Cu1—O1 | 2.0158 (19) | N5—H5A | 0.84 (3) |
| Cu1—O2 | 2.229 (6) | N5—H5B | 0.79 (3) |
| Cu1—N1 | 2.034 (2) | N5—C1 | 1.331 (4) |
| Cu1—N4 | 1.996 (2) | N6—H6A | 0.80 (4) |
| S1—C4 | 1.777 (2) | N6—H6B | 0.81 (4) |
| S1—C5 | 1.774 (3) | N6—C3 | 1.351 (4) |
| O1—H1A | 0.915 (14) | N7—C7 | 1.337 (3) |
| O1—H1B | 0.911 (15) | N7—C9 | 1.461 (3) |
| O3—H3A | 0.9233 | N7—C10 | 1.452 (3) |
| O3—H3B | 0.9290 | C1—C2 | 1.392 (4) |
| O4—H4A | 0.9144 | C2—H2 | 0.9500 |
| O4—H4B | 0.9323 | C2—C3 | 1.383 (4) |
| O2—H2A | 0.9063 | C5—C6 | 1.363 (4) |
| O2—H2B | 0.9141 | C6—H6 | 0.9500 |
| O5—H5C | 0.9293 | C6—C7 | 1.411 (4) |
| O5—H5D | 0.9107 | C8—H8 | 0.9500 |
| N1—C1 | 1.376 (3) | C9—H9A | 0.9800 |
| N1—C4 | 1.332 (3) | C9—H9B | 0.9800 |
| N2—C3 | 1.368 (4) | C9—H9C | 0.9800 |
| N2—C4 | 1.318 (3) | C10—H10A | 0.9800 |
| N3—C7 | 1.366 (3) | C10—H10B | 0.9800 |
| N3—C8 | 1.320 (3) | C10—H10C | 0.9800 |
| Cl1—Cu1—Cl2 | 92.89 (5) | C7—N7—C10 | 120.8 (2) |
| O1—Cu1—Cl1 | 91.94 (6) | C10—N7—C9 | 118.0 (2) |
| O1—Cu1—Cl2 | 92.69 (7) | N1—C1—C2 | 120.3 (2) |
| O1—Cu1—O2 | 100.64 (18) | N5—C1—N1 | 117.4 (2) |
| O1—Cu1—N1 | 157.01 (8) | N5—C1—C2 | 122.3 (2) |
| O2—Cu1—Cl1 | 93.1 (2) | C1—C2—H2 | 120.9 |
| N1—Cu1—Cl1 | 92.81 (6) | C3—C2—C1 | 118.2 (2) |
| N1—Cu1—Cl2 | 109.51 (8) | C3—C2—H2 | 120.9 |
| N1—Cu1—O2 | 101.55 (18) | N2—C3—C2 | 121.3 (2) |
| N4—Cu1—Cl1 | 171.10 (6) | N6—C3—N2 | 117.0 (3) |
| N4—Cu1—Cl2 | 95.20 (8) | N6—C3—C2 | 121.6 (3) |
| N4—Cu1—O1 | 83.98 (8) | N1—C4—S1 | 119.87 (19) |
| N4—Cu1—O2 | 95.5 (2) | N2—C4—S1 | 111.66 (18) |
| N4—Cu1—N1 | 87.99 (8) | N2—C4—N1 | 128.4 (2) |
| C5—S1—C4 | 104.53 (12) | N4—C5—S1 | 120.15 (18) |
| Cu1—O1—H1A | 110 (2) | N4—C5—C6 | 122.7 (2) |
| Cu1—O1—H1B | 118 (3) | C6—C5—S1 | 116.92 (19) |
| H1A—O1—H1B | 107 (3) | C5—C6—H6 | 121.4 |
| H3A—O3—H3B | 109.4 | C5—C6—C7 | 117.1 (2) |
| H4A—O4—H4B | 108.7 | C7—C6—H6 | 121.4 |
| Cu1—O2—H2A | 111.7 | N3—C7—C6 | 120.7 (2) |
| Cu1—O2—H2B | 114.0 | N7—C7—N3 | 117.4 (2) |
| H2A—O2—H2B | 106.1 | N7—C7—C6 | 122.0 (2) |
| H5C—O5—H5D | 123.9 | N3—C8—N4 | 127.4 (2) |
| C1—N1—Cu1 | 124.00 (17) | N3—C8—H8 | 116.3 |
| C4—N1—Cu1 | 118.91 (17) | N4—C8—H8 | 116.3 |
| C4—N1—C1 | 115.4 (2) | N7—C9—H9A | 109.5 |
| C4—N2—C3 | 115.5 (2) | N7—C9—H9B | 109.5 |
| C8—N3—C7 | 116.2 (2) | N7—C9—H9C | 109.5 |
| C5—N4—Cu1 | 120.02 (17) | H9A—C9—H9B | 109.5 |
| C8—N4—Cu1 | 122.97 (17) | H9A—C9—H9C | 109.5 |
| C8—N4—C5 | 115.7 (2) | H9B—C9—H9C | 109.5 |
| H5A—N5—H5B | 126 (3) | N7—C10—H10A | 109.5 |
| C1—N5—H5A | 116 (2) | N7—C10—H10B | 109.5 |
| C1—N5—H5B | 116 (2) | N7—C10—H10C | 109.5 |
| H6A—N6—H6B | 122 (4) | H10A—C10—H10B | 109.5 |
| C3—N6—H6A | 119 (2) | H10A—C10—H10C | 109.5 |
| C3—N6—H6B | 118 (2) | H10B—C10—H10C | 109.5 |
| C7—N7—C9 | 120.8 (2) |
| H··· | ||||
| O1—H1 | 0.92 (1) | 2.83 (3) | 3.439 (2) | 125 (3) |
| O1—H1 | 0.92 (1) | 1.99 (2) | 2.897 (3) | 170 (3) |
| O1—H1 | 0.91 (2) | 1.82 (6) | 2.71 (6) | 167 (4) |
| O1—H1 | 0.91 (2) | 1.80 (6) | 2.69 (6) | 162 (4) |
| O3—H3 | 0.92 | 2.28 | 3.200 (7) | 176 |
| O3—H3 | 0.93 | 2.17 | 2.94 (6) | 139 |
| O4—H4 | 0.91 | 2.97 | 3.46 (6) | 116 |
| O4—H4 | 0.91 | 2.25 | 3.07 (6) | 150 |
| O4—H4 | 0.93 | 2.61 | 3.01 (6) | 107 |
| O2—H2 | 0.91 | 2.36 | 3.13 (6) | 144 |
| O2—H2 | 0.91 | 2.33 | 3.177 (7) | 154 |
| O5—H5 | 0.93 | 2.02 | 2.83 (6) | 145 |
| O5—H5 | 0.93 | 2.64 | 3.13 (6) | 114 |
| O5—H5 | 0.91 | 2.96 | 3.45 (6) | 116 |
| O5—H5 | 0.91 | 2.56 | 3.27 (6) | 135 |
| N5—H5 | 0.84 (3) | 3.08 (3) | 3.430 (3) | 108 (2) |
| N5—H5 | 0.84 (3) | 2.46 (3) | 3.295 (3) | 172 (3) |
| N5—H5 | 0.84 (3) | 2.07 (3) | 2.903 (7) | 167 (3) |
| N5—H5 | 0.79 (3) | 2.56 (4) | 3.353 (3) | 173 (3) |
| N6—H6 | 0.80 (4) | 2.41 (4) | 3.187 (4) | 165 (3) |
| N6—H6 | 0.80 (4) | 2.32 (4) | 3.094 (8) | 163 (3) |
| N6—H6 | 0.81 (4) | 2.76 (4) | 3.323 (3) | 128 (3) |