In the crystal structure of 1,1′-(butane-1,4-diyl)bis(5-methyl-6-methylthio-4,5-dihydro-1H-pyrazolo[3,4-d]pyrimidin-4-one),C18H22N8O2S2, (6), the pyrazolo[3,4-d]pyrimidine rings do not show any inter- or intramolecular stacking due to aromatic π–π interactions. There is a crystallographic inversion centre at the midpoint of the central C—C bond of the chain linking the two ring systems.
Supporting information
CCDC reference: 193783
Key indicators
- Single-crystal X-ray study
- T = 293 K
- Mean (C-C) = 0.003 Å
- R factor = 0.036
- wR factor = 0.101
- Data-to-parameter ratio = 14.2
checkCIF results
No syntax errors found
ADDSYM reports no extra symmetry
Data collection: XSCANS (Siemens, 1996); cell refinement: XSCANS; data reduction: XSCANS; program(s) used to solve structure: SHELXTL-NT (Bruker, 1997); program(s) used to refine structure: SHELXTL-NT; molecular graphics: SHELXTL-NT; software used to prepare material for publication: SHELXTL-NT.
1,1'-(butane-1,4-diyl)bis(5-methyl-6-methylthio-4,5-dihydro-1
H-pyrazolo[3,4-
d] pyrimidin-4-one
top
Crystal data top
C18H22N8O2S2 | F(000) = 234 |
Mr = 446.56 | Dx = 1.455 Mg m−3 |
Triclinic, P1 | Melting point: 222 K |
a = 7.433 (1) Å | Mo Kα radiation, λ = 0.71073 Å |
b = 8.117 (1) Å | Cell parameters from 38 reflections |
c = 9.646 (1) Å | θ = 4.9–18.9° |
α = 71.43 (1)° | µ = 0.30 mm−1 |
β = 72.43 (1)° | T = 293 K |
γ = 71.36 (1)° | Block, colourless |
V = 509.6 (1) Å3 | 0.3 × 0.25 × 0.18 mm |
Z = 1 | |
Data collection top
Bruker P4 diffractometer | Rint = 0.018 |
Radiation source: fine-focus sealed tube | θmax = 26.0°, θmin = 2.3° |
Graphite monochromator | h = −8→1 |
θ–2θ scans | k = −9→9 |
2453 measured reflections | l = −11→11 |
1966 independent reflections | 3 standard reflections every 97 reflections |
1699 reflections with I > 2σ(I) | intensity decay: none |
Refinement top
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)] = 0.036 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.101 | H-atom parameters constrained |
S = 1.05 | w = 1/[σ2(Fo2) + (0.0492P)2 + 0.1328P] where P = (Fo2 + 2Fc2)/3 |
1966 reflections | (Δ/σ)max < 0.001 |
138 parameters | Δρmax = 0.23 e Å−3 |
0 restraints | Δρmin = −0.23 e Å−3 |
Special details top
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. |
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top | x | y | z | Uiso*/Ueq | |
S1 | 0.25707 (8) | 0.92495 (7) | −0.17008 (5) | 0.05177 (18) | |
N1 | 0.2633 (2) | 0.6990 (2) | 0.38002 (16) | 0.0445 (4) | |
N2 | 0.2621 (3) | 0.7713 (2) | 0.49063 (18) | 0.0561 (4) | |
C3 | 0.2490 (3) | 0.9433 (3) | 0.4284 (2) | 0.0557 (5) | |
H3 | 0.2443 | 1.0257 | 0.4787 | 0.067* | |
C4 | 0.2429 (3) | 0.9868 (3) | 0.2767 (2) | 0.0456 (4) | |
C5 | 0.2297 (3) | 1.1457 (3) | 0.1569 (2) | 0.0477 (4) | |
N6 | 0.2383 (2) | 1.1086 (2) | 0.02036 (17) | 0.0446 (4) | |
C7 | 0.2516 (2) | 0.9401 (2) | 0.00845 (19) | 0.0401 (4) | |
N8 | 0.2591 (2) | 0.79550 (19) | 0.11835 (15) | 0.0408 (3) | |
C9 | 0.2538 (2) | 0.8258 (2) | 0.25010 (19) | 0.0397 (4) | |
O10 | 0.2135 (3) | 1.29784 (19) | 0.16165 (18) | 0.0672 (4) | |
C11 | 0.2237 (4) | 1.2625 (3) | −0.1109 (2) | 0.0604 (6) | |
H11A | 0.3199 | 1.2308 | −0.1966 | 0.091* | |
H11B | 0.2455 | 1.3624 | −0.0911 | 0.091* | |
H11C | 0.0963 | 1.2947 | −0.1307 | 0.091* | |
C12 | 0.2964 (4) | 0.6883 (3) | −0.1386 (2) | 0.0595 (5) | |
H12A | 0.4234 | 0.6291 | −0.1184 | 0.089* | |
H12B | 0.2874 | 0.6619 | −0.2261 | 0.089* | |
H12C | 0.1994 | 0.6467 | −0.0543 | 0.089* | |
C13 | 0.2705 (3) | 0.5089 (2) | 0.4123 (2) | 0.0478 (4) | |
H13A | 0.3869 | 0.4380 | 0.4488 | 0.057* | |
H13B | 0.2787 | 0.4795 | 0.3203 | 0.057* | |
C14 | 0.0931 (3) | 0.4597 (2) | 0.52814 (19) | 0.0462 (4) | |
H14A | 0.1151 | 0.3302 | 0.5579 | 0.055* | |
H14B | 0.0778 | 0.5001 | 0.6164 | 0.055* | |
Atomic displacement parameters (Å2) top | U11 | U22 | U33 | U12 | U13 | U23 |
S1 | 0.0661 (3) | 0.0571 (3) | 0.0340 (2) | −0.0204 (2) | −0.0121 (2) | −0.0077 (2) |
N1 | 0.0526 (9) | 0.0480 (9) | 0.0340 (7) | −0.0136 (7) | −0.0112 (6) | −0.0088 (6) |
N2 | 0.0721 (11) | 0.0632 (11) | 0.0383 (8) | −0.0163 (9) | −0.0187 (8) | −0.0139 (7) |
C3 | 0.0722 (14) | 0.0594 (12) | 0.0468 (11) | −0.0177 (10) | −0.0194 (10) | −0.0209 (9) |
C4 | 0.0497 (10) | 0.0494 (10) | 0.0440 (10) | −0.0157 (8) | −0.0129 (8) | −0.0142 (8) |
C5 | 0.0521 (11) | 0.0467 (10) | 0.0502 (10) | −0.0171 (8) | −0.0133 (8) | −0.0131 (8) |
N6 | 0.0523 (9) | 0.0427 (8) | 0.0409 (8) | −0.0178 (7) | −0.0129 (7) | −0.0046 (6) |
C7 | 0.0412 (9) | 0.0461 (9) | 0.0355 (8) | −0.0150 (7) | −0.0080 (7) | −0.0097 (7) |
N8 | 0.0479 (8) | 0.0439 (8) | 0.0325 (7) | −0.0152 (6) | −0.0077 (6) | −0.0091 (6) |
C9 | 0.0389 (9) | 0.0459 (9) | 0.0355 (8) | −0.0122 (7) | −0.0086 (7) | −0.0097 (7) |
O10 | 0.0952 (12) | 0.0481 (8) | 0.0700 (10) | −0.0245 (8) | −0.0249 (9) | −0.0172 (7) |
C11 | 0.0805 (15) | 0.0477 (11) | 0.0511 (12) | −0.0219 (10) | −0.0196 (11) | 0.0011 (9) |
C12 | 0.0804 (15) | 0.0599 (12) | 0.0426 (10) | −0.0178 (11) | −0.0094 (10) | −0.0219 (9) |
C13 | 0.0512 (11) | 0.0437 (10) | 0.0428 (10) | −0.0052 (8) | −0.0128 (8) | −0.0073 (8) |
C14 | 0.0593 (11) | 0.0403 (9) | 0.0349 (9) | −0.0098 (8) | −0.0154 (8) | −0.0013 (7) |
Geometric parameters (Å, º) top
S1—C7 | 1.7527 (17) | C7—N8 | 1.306 (2) |
S1—C12 | 1.786 (2) | N8—C9 | 1.356 (2) |
N1—C9 | 1.349 (2) | C11—H11A | 0.96 |
N1—N2 | 1.368 (2) | C11—H11B | 0.96 |
N1—C13 | 1.460 (2) | C11—H11C | 0.96 |
N2—C3 | 1.317 (3) | C12—H12A | 0.96 |
C3—C4 | 1.403 (3) | C12—H12B | 0.96 |
C3—H3 | 0.93 | C12—H12C | 0.96 |
C4—C9 | 1.383 (3) | C13—C14 | 1.520 (3) |
C4—C5 | 1.431 (3) | C13—H13A | 0.97 |
C5—O10 | 1.217 (2) | C13—H13B | 0.97 |
C5—N6 | 1.420 (2) | C14—C14i | 1.512 (4) |
N6—C7 | 1.378 (2) | C14—H14A | 0.97 |
N6—C11 | 1.471 (2) | C14—H14B | 0.97 |
| | | |
C7—S1—C12 | 100.72 (9) | N6—C11—H11A | 109.5 |
C9—N1—N2 | 110.67 (15) | N6—C11—H11B | 109.5 |
C9—N1—C13 | 128.98 (15) | H11A—C11—H11B | 109.5 |
N2—N1—C13 | 120.34 (15) | N6—C11—H11C | 109.5 |
C3—N2—N1 | 105.79 (15) | H11A—C11—H11C | 109.5 |
N2—C3—C4 | 111.49 (17) | H11B—C11—H11C | 109.5 |
N2—C3—H3 | 124.3 | S1—C12—H12A | 109.5 |
C4—C3—H3 | 124.3 | S1—C12—H12B | 109.5 |
C9—C4—C3 | 104.53 (17) | H12A—C12—H12B | 109.5 |
C9—C4—C5 | 119.25 (17) | S1—C12—H12C | 109.5 |
C3—C4—C5 | 136.22 (18) | H12A—C12—H12C | 109.5 |
O10—C5—N6 | 120.50 (18) | H12B—C12—H12C | 109.5 |
O10—C5—C4 | 127.84 (19) | N1—C13—C14 | 112.31 (15) |
N6—C5—C4 | 111.66 (16) | N1—C13—H13A | 109.1 |
C7—N6—C5 | 123.29 (15) | C14—C13—H13A | 109.1 |
C7—N6—C11 | 120.05 (16) | N1—C13—H13B | 109.1 |
C5—N6—C11 | 116.62 (16) | C14—C13—H13B | 109.1 |
N8—C7—N6 | 125.23 (16) | H13A—C13—H13B | 107.9 |
N8—C7—S1 | 119.01 (13) | C14i—C14—C13 | 113.29 (18) |
N6—C7—S1 | 115.77 (13) | C14i—C14—H14A | 108.9 |
C7—N8—C9 | 113.00 (15) | C13—C14—H14A | 108.9 |
N1—C9—N8 | 124.95 (16) | C14i—C14—H14B | 108.9 |
N1—C9—C4 | 107.50 (16) | C13—C14—H14B | 108.9 |
N8—C9—C4 | 127.53 (16) | H14A—C14—H14B | 107.7 |
| | | |
C9—N1—N2—C3 | 0.9 (2) | C12—S1—C7—N8 | −5.32 (17) |
C13—N1—N2—C3 | −178.07 (17) | C12—S1—C7—N6 | 175.01 (14) |
N1—N2—C3—C4 | −0.5 (2) | N6—C7—N8—C9 | −0.4 (3) |
N2—C3—C4—C9 | −0.1 (2) | S1—C7—N8—C9 | 179.97 (12) |
N2—C3—C4—C5 | −179.9 (2) | N2—N1—C9—N8 | 177.59 (16) |
C9—C4—C5—O10 | 177.73 (19) | C13—N1—C9—N8 | −3.5 (3) |
C3—C4—C5—O10 | −2.5 (4) | N2—N1—C9—C4 | −1.0 (2) |
C9—C4—C5—N6 | −2.5 (3) | C13—N1—C9—C4 | 177.87 (16) |
C3—C4—C5—N6 | 177.3 (2) | C7—N8—C9—N1 | −178.69 (16) |
O10—C5—N6—C7 | −178.31 (17) | C7—N8—C9—C4 | −0.4 (3) |
C4—C5—N6—C7 | 1.9 (3) | C3—C4—C9—N1 | 0.7 (2) |
O10—C5—N6—C11 | −0.9 (3) | C5—C4—C9—N1 | −179.48 (16) |
C4—C5—N6—C11 | 179.30 (16) | C3—C4—C9—N8 | −177.87 (18) |
C5—N6—C7—N8 | −0.5 (3) | C5—C4—C9—N8 | 2.0 (3) |
C11—N6—C7—N8 | −177.80 (18) | C9—N1—C13—C14 | −116.3 (2) |
C5—N6—C7—S1 | 179.18 (14) | N2—N1—C13—C14 | 62.5 (2) |
C11—N6—C7—S1 | 1.8 (2) | N1—C13—C14—C14i | 68.2 (2) |
Symmetry code: (i) −x, −y+1, −z+1. |