Supporting information
Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536807026748/at2312sup1.cif | |
Structure factor file (CIF format) https://doi.org/10.1107/S1600536807026748/at2312Isup2.hkl |
CCDC reference: 654889
Key indicators
- Single-crystal X-ray study
- T = 294 K
- Mean (C-C) = 0.003 Å
- R factor = 0.049
- wR factor = 0.117
- Data-to-parameter ratio = 15.5
checkCIF/PLATON results
No syntax errors found
Alert level C PLAT026_ALERT_3_C Ratio Observed / Unique Reflections too Low .... 45 Perc. PLAT066_ALERT_1_C Predicted and Reported Transmissions Identical . ? PLAT414_ALERT_2_C Short Intra D-H..H-X H2A .. H8C .. 1.91 Ang.
Alert level G PLAT860_ALERT_3_G Note: Number of Least-Squares Restraints ....... 1
0 ALERT level A = In general: serious problem 0 ALERT level B = Potentially serious problem 3 ALERT level C = Check and explain 1 ALERT level G = General alerts; check 1 ALERT type 1 CIF construction/syntax error, inconsistent or missing data 1 ALERT type 2 Indicator that the structure model may be wrong or deficient 2 ALERT type 3 Indicator that the structure quality may be low 0 ALERT type 4 Improvement, methodology, query or suggestion 0 ALERT type 5 Informative message, check
For related literature, see: Cimerman et al. (1997); Sutherland & Hoy (1968); Tucker et al. (1975).
A mixture of the hypnone (0.1 mol), and acetohydrazide (0.1 mol) was stirred in refluxing ethanol (30 ml) for 5 h to afford the title compound (0.087 mol, yield 87%). Single crystals suitable for X-ray measurements were obtained by recrystallization from ethanol at room temperature.
The H atom bound to the N2 atom were found from a difference Fourier map and refined freely. The other H atoms were fixed geometrically and allowed to ride on their attached atoms, with C—H = 0.93–0.96 Å, and with Uiso = 1.2(C) or 1.5Ueq(Cmethyl).
As part of our search for new schiff base compounds we synthesized the title compound (I), and we report its structure here.
The molecules are linked together to form two dimer by N21—H2A···O1i and weak C—H···Oi hydrogen bonds [symmetry code: (i) - x + 3, - y + 1, - z + 1] (Table 2 and Fig. 2). The structure is stabilized by weak-interactions between the dimers and intarmolecular C8—H8C···N2 hydrogen bonding interactions.
For related literature, see: Cimerman et al. (1997); Sutherland & Hoy (1968); Tucker et al. (1975).
Data collection: SMART (Bruker, 1997); cell refinement: SMART; data reduction: SAINT (Bruker, 1997); program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: SHELXTL (Bruker, 1997); software used to prepare material for publication: SHELXTL.
C10H12N2O | Z = 4 |
Mr = 176.22 | F(000) = 376 |
Monoclinic, P21/c | Dx = 1.229 Mg m−3 |
Hall symbol: -P 2ybc | Mo Kα radiation, λ = 0.71073 Å |
a = 5.3681 (18) Å | θ = 2.2–26.3° |
b = 9.361 (3) Å | µ = 0.08 mm−1 |
c = 19.033 (6) Å | T = 294 K |
β = 95.496 (6)° | Block, colourless |
V = 952.0 (5) Å3 | 0.26 × 0.10 × 0.10 mm |
Bruker SMART CCD area-detector diffractometer | 882 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.070 |
Graphite monochromator | θmax = 26.3°, θmin = 2.2° |
φ and ω scans | h = −6→6 |
5285 measured reflections | k = −9→11 |
1940 independent reflections | l = −23→19 |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.049 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.117 | w = 1/[σ2(Fo2) + (0.0397P)2] where P = (Fo2 + 2Fc2)/3 |
S = 1.03 | (Δ/σ)max < 0.001 |
1940 reflections | Δρmax = 0.19 e Å−3 |
125 parameters | Δρmin = −0.14 e Å−3 |
1 restraint | Extinction correction: SHELXL97, Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.067 (6) |
C10H12N2O | V = 952.0 (5) Å3 |
Mr = 176.22 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 5.3681 (18) Å | µ = 0.08 mm−1 |
b = 9.361 (3) Å | T = 294 K |
c = 19.033 (6) Å | 0.26 × 0.10 × 0.10 mm |
β = 95.496 (6)° |
Bruker SMART CCD area-detector diffractometer | 882 reflections with I > 2σ(I) |
5285 measured reflections | Rint = 0.070 |
1940 independent reflections |
R[F2 > 2σ(F2)] = 0.049 | 1 restraint |
wR(F2) = 0.117 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.03 | Δρmax = 0.19 e Å−3 |
1940 reflections | Δρmin = −0.14 e Å−3 |
125 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 | ||
O1 | 1.4564 (3) | 0.56158 (18) | 0.58573 (8) | 0.0711 (6) | |
N1 | 1.0181 (3) | 0.72134 (19) | 0.46283 (10) | 0.0492 (5) | |
N2 | 1.2145 (4) | 0.6349 (2) | 0.48995 (10) | 0.0527 (6) | |
C1 | 0.5972 (4) | 0.8765 (2) | 0.41812 (12) | 0.0505 (7) | |
H1 | 0.6218 | 0.8495 | 0.4653 | 0.061* | |
C2 | 0.4048 (5) | 0.9687 (3) | 0.39673 (12) | 0.0586 (7) | |
H2 | 0.3014 | 1.0030 | 0.4294 | 0.070* | |
C3 | 0.3650 (5) | 1.0105 (3) | 0.32713 (14) | 0.0616 (8) | |
H3 | 0.2363 | 1.0736 | 0.3128 | 0.074* | |
C4 | 0.5168 (5) | 0.9580 (3) | 0.27914 (13) | 0.0611 (7) | |
H4 | 0.4898 | 0.9851 | 0.2320 | 0.073* | |
C5 | 0.7111 (4) | 0.8644 (2) | 0.30053 (12) | 0.0560 (7) | |
H5 | 0.8125 | 0.8294 | 0.2675 | 0.067* | |
C6 | 0.7554 (4) | 0.8228 (2) | 0.37083 (11) | 0.0431 (6) | |
C7 | 0.9639 (4) | 0.7243 (2) | 0.39541 (12) | 0.0463 (6) | |
C8 | 1.0931 (5) | 0.6416 (2) | 0.34212 (12) | 0.0623 (8) | |
H8A | 1.2002 | 0.7043 | 0.3188 | 0.093* | |
H8B | 0.9704 | 0.6006 | 0.3080 | 0.093* | |
H8C | 1.1915 | 0.5668 | 0.3655 | 0.093* | |
C9 | 1.2788 (5) | 0.6354 (3) | 0.56074 (13) | 0.0528 (7) | |
C10 | 1.1281 (5) | 0.7261 (3) | 0.60558 (12) | 0.0659 (8) | |
H10A | 1.1863 | 0.7125 | 0.6544 | 0.099* | |
H10B | 0.9550 | 0.6994 | 0.5979 | 0.099* | |
H10C | 1.1462 | 0.8248 | 0.5932 | 0.099* | |
H2A | 1.302 (4) | 0.576 (2) | 0.4637 (10) | 0.070 (9)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0738 (13) | 0.0854 (13) | 0.0519 (11) | 0.0266 (11) | −0.0058 (10) | 0.0042 (9) |
N1 | 0.0445 (12) | 0.0578 (12) | 0.0446 (12) | −0.0008 (10) | −0.0001 (10) | 0.0073 (10) |
N2 | 0.0549 (14) | 0.0599 (14) | 0.0423 (13) | 0.0097 (12) | −0.0002 (11) | 0.0043 (11) |
C1 | 0.0533 (16) | 0.0593 (15) | 0.0381 (14) | −0.0005 (13) | 0.0000 (12) | 0.0051 (12) |
C2 | 0.0571 (17) | 0.0710 (18) | 0.0472 (16) | 0.0068 (15) | 0.0029 (13) | −0.0075 (13) |
C3 | 0.0572 (18) | 0.0659 (18) | 0.0598 (18) | 0.0079 (14) | −0.0053 (15) | 0.0019 (14) |
C4 | 0.0628 (19) | 0.0726 (18) | 0.0464 (16) | −0.0014 (15) | −0.0031 (15) | 0.0140 (14) |
C5 | 0.0569 (17) | 0.0689 (17) | 0.0421 (15) | −0.0012 (14) | 0.0039 (12) | 0.0026 (13) |
C6 | 0.0434 (14) | 0.0492 (15) | 0.0362 (13) | −0.0071 (12) | 0.0011 (11) | 0.0000 (11) |
C7 | 0.0466 (15) | 0.0484 (14) | 0.0433 (14) | −0.0056 (12) | 0.0016 (12) | −0.0015 (12) |
C8 | 0.0690 (18) | 0.0666 (16) | 0.0499 (15) | 0.0078 (14) | −0.0017 (13) | −0.0038 (13) |
C9 | 0.0566 (17) | 0.0555 (16) | 0.0460 (16) | −0.0005 (14) | 0.0032 (13) | 0.0029 (13) |
C10 | 0.0755 (19) | 0.0724 (18) | 0.0489 (15) | 0.0095 (15) | 0.0013 (14) | −0.0001 (13) |
O1—C9 | 1.235 (3) | C4—H4 | 0.9300 |
N1—C7 | 1.289 (2) | C5—C6 | 1.392 (3) |
N1—N2 | 1.389 (2) | C5—H5 | 0.9300 |
N2—C9 | 1.358 (3) | C6—C7 | 1.490 (3) |
N2—H2A | 0.904 (10) | C7—C8 | 1.498 (3) |
C1—C2 | 1.378 (3) | C8—H8A | 0.9600 |
C1—C6 | 1.389 (3) | C8—H8B | 0.9600 |
C1—H1 | 0.9300 | C8—H8C | 0.9600 |
C2—C3 | 1.378 (3) | C9—C10 | 1.496 (3) |
C2—H2 | 0.9300 | C10—H10A | 0.9600 |
C3—C4 | 1.372 (3) | C10—H10B | 0.9600 |
C3—H3 | 0.9300 | C10—H10C | 0.9600 |
C4—C5 | 1.393 (3) | ||
C7—N1—N2 | 118.3 (2) | C1—C6—C7 | 120.5 (2) |
C9—N2—N1 | 118.6 (2) | C5—C6—C7 | 121.9 (2) |
C9—N2—H2A | 117.1 (14) | N1—C7—C6 | 114.7 (2) |
N1—N2—H2A | 124.3 (14) | N1—C7—C8 | 126.0 (2) |
C2—C1—C6 | 121.5 (2) | C6—C7—C8 | 119.32 (19) |
C2—C1—H1 | 119.2 | C7—C8—H8A | 109.5 |
C6—C1—H1 | 119.2 | C7—C8—H8B | 109.5 |
C1—C2—C3 | 120.3 (2) | H8A—C8—H8B | 109.5 |
C1—C2—H2 | 119.8 | C7—C8—H8C | 109.5 |
C3—C2—H2 | 119.8 | H8A—C8—H8C | 109.5 |
C4—C3—C2 | 119.4 (2) | H8B—C8—H8C | 109.5 |
C4—C3—H3 | 120.3 | O1—C9—N2 | 119.6 (2) |
C2—C3—H3 | 120.3 | O1—C9—C10 | 122.5 (2) |
C3—C4—C5 | 120.4 (2) | N2—C9—C10 | 117.9 (2) |
C3—C4—H4 | 119.8 | C9—C10—H10A | 109.5 |
C5—C4—H4 | 119.8 | C9—C10—H10B | 109.5 |
C6—C5—C4 | 120.8 (2) | H10A—C10—H10B | 109.5 |
C6—C5—H5 | 119.6 | C9—C10—H10C | 109.5 |
C4—C5—H5 | 119.6 | H10A—C10—H10C | 109.5 |
C1—C6—C5 | 117.6 (2) | H10B—C10—H10C | 109.5 |
C7—N1—N2—C9 | 177.5 (2) | N2—N1—C7—C6 | −178.45 (18) |
C6—C1—C2—C3 | −0.1 (3) | N2—N1—C7—C8 | 0.4 (3) |
C1—C2—C3—C4 | 0.7 (3) | C1—C6—C7—N1 | −15.2 (3) |
C2—C3—C4—C5 | −0.6 (4) | C5—C6—C7—N1 | 164.71 (19) |
C3—C4—C5—C6 | −0.2 (3) | C1—C6—C7—C8 | 165.8 (2) |
C2—C1—C6—C5 | −0.6 (3) | C5—C6—C7—C8 | −14.2 (3) |
C2—C1—C6—C7 | 179.33 (19) | N1—N2—C9—O1 | −178.5 (2) |
C4—C5—C6—C1 | 0.8 (3) | N1—N2—C9—C10 | 1.9 (3) |
C4—C5—C6—C7 | −179.2 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2A···O1i | 0.91 (2) | 2.11 (2) | 3.011 (3) | 172 (2) |
C8—H8C···N2 | 0.96 | 2.44 | 2.827 (3) | 103 |
C8—H8C···O1i | 0.96 | 2.35 | 3.273 (3) | 160 |
Symmetry code: (i) −x+3, −y+1, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C10H12N2O |
Mr | 176.22 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 294 |
a, b, c (Å) | 5.3681 (18), 9.361 (3), 19.033 (6) |
β (°) | 95.496 (6) |
V (Å3) | 952.0 (5) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.08 |
Crystal size (mm) | 0.26 × 0.10 × 0.10 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector |
Absorption correction | – |
No. of measured, independent and observed [I > 2σ(I)] reflections | 5285, 1940, 882 |
Rint | 0.070 |
(sin θ/λ)max (Å−1) | 0.624 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.049, 0.117, 1.03 |
No. of reflections | 1940 |
No. of parameters | 125 |
No. of restraints | 1 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.19, −0.14 |
Computer programs: SMART (Bruker, 1997), SMART, SAINT (Bruker, 1997), SHELXS97 (Sheldrick, 1997), SHELXL97 (Sheldrick, 1997), SHELXTL (Bruker, 1997), SHELXTL.
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2A···O1i | 0.91 (2) | 2.11 (2) | 3.011 (3) | 172.2 (18) |
C8—H8C···N2 | 0.96 | 2.44 | 2.827 (3) | 103 |
C8—H8C···O1i | 0.96 | 2.35 | 3.273 (3) | 160 |
Symmetry code: (i) −x+3, −y+1, −z+1. |
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As part of our search for new schiff base compounds we synthesized the title compound (I), and we report its structure here.
The molecules are linked together to form two dimer by N21—H2A···O1i and weak C—H···Oi hydrogen bonds [symmetry code: (i) - x + 3, - y + 1, - z + 1] (Table 2 and Fig. 2). The structure is stabilized by weak-interactions between the dimers and intarmolecular C8—H8C···N2 hydrogen bonding interactions.