Crystal structure of N-[(8E)-12-methyl-14-phenyl-10,13,14,16-tetra-aza-tetra-cyclo-[7.7.0.0(2,7).0(11,15)]hexa-deca-1(16),2,4,6,9,11(15),12-heptaen-8-yl-idene]hydroxyl-amine 1,4-dioxane hemisolvate.

In the title solvate, C19H13N5O·0.5C4H8O2, the main mol-ecule is almost planar (r.m.s. deviation for the non-H atoms = 0.066 Å). The hydroxyl-amine group is disordered over two orientations in a 0.761 (4):0.239 (4) ratio. The complete dioxane solvent mol-ecule is generated by a crystallographic inversion centre. In the crystal, both disorder components of the hydroxyl-amine group form O-H⋯N hydrogen bonds to the same N-atom acceptor, thereby generating [010] chains. The chains encompass [010] channels occupied by the solvent mol-ecules. Aromatic π-π stacking is also observed [shortest centroid-centroid separation = 3.3394 (19) Å].

Related literature

For a related structure see: Mague et al. (2014 ▸). For background to the biological properties of pyrazino­pyroles or pyrazino­pyrazoles see: Nyeki et al. (2002 ▸); Askew et al. (1997 ▸); Wehner et al. (1998 ▸); Zimmerman (1995 ▸).

Experimental

Crystal data

C19H13N5O·0.5C4H8O2

M = 371.40

Monoclinic,

a = 15.8019 (4) Å

b = 5.5675 (1) Å

c = 20.4756 (5) Å

β = 102.093 (2)°

V = 1761.41 (7) Å3

Z = 4

Cu Kα radiation

μ = 0.77 mm−1

T = 150 K

0.15 × 0.07 × 0.04 mm

Data collection

Bruker D8 VENTURE PHOTON 100 CMOS diffractometer

Absorption correction: multi-scan (SADABS; Bruker, 2014 ▸) T min = 0.85, T max = 0.97

12942 measured reflections

3122 independent reflections

1934 reflections with I > 2σ(I)

R int = 0.066

Refinement

R[F 2 > 2σ(F 2)] = 0.060

wR(F 2) = 0.166

S = 1.05

3122 reflections

261 parameters

2 restraints

H-atom parameters constrained

Δρmax = 0.49 e Å−3

Δρmin = −0.21 e Å−3

Data collection: APEX2 (Bruker, 2014 ▸); cell refinement: SAINT (Bruker, 2014 ▸); data reduction: SAINT; program(s) used to solve structure: SHELXT (Sheldrick, 2008 ▸); program(s) used to refine structure: SHELXL2014 (Sheldrick, 2008 ▸); molecular graphics: DIAMOND (Brandenburg & Putz, 2012 ▸); software used to prepare material for publication: SHELXTL (Sheldrick, 2008 ▸).

Crystal structure: contains datablock(s) global, I. DOI: 10.1107/S2056989014027285/hb7340sup1.cif

Structure factors: contains datablock(s) I. DOI: 10.1107/S2056989014027285/hb7340Isup2.hkl

Click here for additional data file.

Supporting information file. DOI: 10.1107/S2056989014027285/hb7340Isup3.cml

Click here for additional data file.

. DOI: 10.1107/S2056989014027285/hb7340fig1.tif

The title mol­ecule showing 50% probability ellipsoids. Only the major componenet of the disordered hydroxyl­amine substituent is shown.

Click here for additional data file.

. DOI: 10.1107/S2056989014027285/hb7340fig2.tif

Packing showing the π-π inter­actions as green dotted lines.

Click here for additional data file.

b via . DOI: 10.1107/S2056989014027285/hb7340fig3.tif

Packing viewed down the b axis showing the formation of one column via O—H⋯N hydrogen bonds (red dotted lines).

CCDC reference: 1039120

Additional supporting information: crystallographic information; 3D view; checkCIF report

C19H13N5O·0.5C4H8O2	F(000) = 776
Mr = 371.40	Dx = 1.401 Mg m−3
Monoclinic, P21/n	Cu Kα radiation, λ = 1.54178 Å
a = 15.8019 (4) Å	Cell parameters from 5735 reflections
b = 5.5675 (1) Å	θ = 3.2–67.0°
c = 20.4756 (5) Å	µ = 0.77 mm−1
β = 102.093 (2)°	T = 150 K
V = 1761.41 (7) Å3	Column, light yellow
Z = 4	0.15 × 0.07 × 0.04 mm

Bruker D8 VENTURE PHOTON 100 CMOS diffractometer	3122 independent reflections
Radiation source: INCOATEC IµS micro-focus source	1934 reflections with I > 2σ(I)
Mirror monochromator	Rint = 0.066
Detector resolution: 10.4167 pixels mm-1	θmax = 67.1°, θmin = 3.2°
ω scans	h = −18→18
Absorption correction: multi-scan (SADABS; Bruker, 2014)	k = −6→6
Tmin = 0.85, Tmax = 0.97	l = −21→23
12942 measured reflections

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)] = 0.060	Hydrogen site location: mixed
wR(F2) = 0.166	H-atom parameters constrained
S = 1.05	w = 1/[σ2(Fo2) + (0.0629P)2 + 1.2077P] where P = (Fo2 + 2Fc2)/3
3122 reflections	(Δ/σ)max < 0.001
261 parameters	Δρmax = 0.49 e Å−3
2 restraints	Δρmin = −0.21 e Å−3

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 takeninto account individually in the estimation of e.s.d.'s in distances, anglesand torsion angles; correlations between e.s.d.'s in cell parameters are onlyused 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 andgoodness of fit S are based on F2, conventional R-factors R are basedon F, with F set to zero for negative F2. The threshold expression ofF2 > σ(F2) is used only for calculating R-factors(gt) etc. and isnot relevant to the choice of reflections for refinement. R-factors basedon F2 are statistically about twice as large as those based on F, and R-factors based on ALL data will be even larger. H-atoms attached to carbonwere placed in calculated positions (C—H = 0.95 - 0.98 Å) while thatattached to oxygen was placed in a location derived from a differencemap and its parameters adjusted to give O—H = 0.84 Å. All wereincluded as riding contributions with isotropic displacementparameters 1.2 - 1.5 times those of the attached atoms. The {N—OH} unitis disordered over two resolved sites in a 3:1 ratio and was refinedsubject to restraints that the geometries of the two components becomparable. The molecule of lattice dioxane located on a center of symmetryappeared to be slightly disordered on the basis of the size and shape ofits displacement ellipsoids but attempts to refine it with a split atommodel were unsuccessful.

	x	y	z	Uiso*/Ueq	Occ. (<1)
O1	0.31941 (17)	0.8942 (5)	0.31844 (14)	0.0526 (9)	0.761 (4)
H1	0.2653	0.8868	0.3133	0.063*	0.761 (4)
N5	0.3255 (3)	0.7078 (7)	0.27450 (18)	0.0477 (10)	0.761 (4)
O1A	0.2787 (7)	0.6744 (19)	0.2677 (5)	0.0526 (9)	0.239 (4)
H1A	0.2308	0.7294	0.2723	0.063*	0.239 (4)
N5A	0.3523 (7)	0.811 (3)	0.2922 (7)	0.0477 (10)	0.239 (4)
N1	0.50054 (14)	0.0011 (5)	0.10956 (11)	0.0441 (6)
N2	0.42463 (15)	−0.1296 (5)	0.08969 (12)	0.0483 (7)
N3	0.54532 (15)	0.3519 (5)	0.17927 (11)	0.0436 (6)
N4	0.36329 (15)	0.3403 (5)	0.18808 (12)	0.0479 (7)
C1	0.57561 (18)	−0.0748 (6)	0.08673 (14)	0.0434 (7)
C2	0.65086 (19)	0.0591 (6)	0.10022 (16)	0.0525 (8)
H2	0.6541	0.2027	0.1257	0.063*
C3	0.7218 (2)	−0.0197 (6)	0.07592 (17)	0.0568 (9)
H3	0.7737	0.0718	0.0849	0.068*
C4	0.7184 (2)	−0.2271 (6)	0.03920 (15)	0.0529 (9)
H4	0.7674	−0.2792	0.0229	0.063*
C5	0.6431 (2)	−0.3581 (6)	0.02643 (16)	0.0558 (9)
H5	0.6399	−0.5020	0.0011	0.067*
C6	0.5719 (2)	−0.2820 (6)	0.05014 (15)	0.0526 (8)
H6	0.5201	−0.3738	0.0410	0.063*
C7	0.36423 (19)	−0.0231 (6)	0.11490 (14)	0.0478 (8)
C8	0.27394 (18)	−0.1199 (6)	0.10347 (16)	0.0564 (9)
H8A	0.2341	−0.0060	0.0763	0.085*
H8B	0.2573	−0.1429	0.1465	0.085*
H8C	0.2713	−0.2741	0.0801	0.085*
C9	0.39917 (18)	0.1795 (6)	0.15255 (14)	0.0457 (8)
C10	0.48730 (18)	0.1895 (6)	0.14854 (14)	0.0435 (7)
C11	0.50897 (18)	0.5059 (6)	0.21488 (14)	0.0436 (7)
C12	0.41977 (18)	0.4993 (6)	0.21947 (14)	0.0467 (8)
C13	0.40452 (19)	0.6952 (6)	0.26329 (15)	0.0501 (8)
C14	0.4877 (2)	0.8210 (6)	0.28446 (14)	0.0492 (8)
C15	0.55051 (18)	0.7031 (6)	0.25596 (14)	0.0455 (8)
C16	0.6360 (2)	0.7815 (6)	0.26910 (16)	0.0531 (8)
H16	0.6783	0.7027	0.2500	0.064*
C17	0.6576 (2)	0.9791 (6)	0.31112 (16)	0.0573 (9)
H17	0.7157	1.0349	0.3212	0.069*
C18	0.5955 (2)	1.0949 (6)	0.33833 (16)	0.0595 (9)
H18	0.6117	1.2305	0.3663	0.071*
C19	0.5100 (2)	1.0176 (6)	0.32565 (16)	0.0560 (9)
H19	0.4681	1.0978	0.3448	0.067*
C20	0.4575 (3)	0.6668 (10)	0.4576 (3)	0.1110 (18)
H20A	0.4427	0.8360	0.4454	0.133*
H20B	0.4296	0.5635	0.4198	0.133*
O6	0.42711 (19)	0.6056 (7)	0.51479 (14)	0.1018 (11)
C22	0.4493 (3)	0.3649 (12)	0.5297 (3)	0.155 (3)
H22A	0.4217	0.2617	0.4919	0.186*
H22B	0.4275	0.3149	0.5696	0.186*

	U11	U22	U33	U12	U13	U23
O1	0.0353 (15)	0.068 (2)	0.0564 (18)	0.0043 (13)	0.0138 (13)	−0.0102 (15)
N5	0.042 (3)	0.062 (3)	0.039 (2)	0.007 (2)	0.009 (2)	−0.0014 (18)
O1A	0.0353 (15)	0.068 (2)	0.0564 (18)	0.0043 (13)	0.0138 (13)	−0.0102 (15)
N5A	0.042 (3)	0.062 (3)	0.039 (2)	0.007 (2)	0.009 (2)	−0.0014 (18)
N1	0.0379 (13)	0.0535 (16)	0.0418 (14)	−0.0011 (12)	0.0104 (11)	0.0027 (13)
N2	0.0416 (14)	0.0578 (17)	0.0450 (15)	−0.0042 (13)	0.0081 (11)	0.0065 (13)
N3	0.0394 (13)	0.0542 (17)	0.0378 (13)	0.0035 (12)	0.0095 (11)	0.0052 (12)
N4	0.0387 (14)	0.0641 (18)	0.0424 (14)	0.0025 (13)	0.0122 (11)	0.0115 (13)
C1	0.0427 (17)	0.051 (2)	0.0376 (16)	0.0041 (15)	0.0102 (13)	0.0083 (15)
C2	0.0440 (18)	0.057 (2)	0.058 (2)	−0.0012 (16)	0.0163 (15)	−0.0074 (17)
C3	0.0435 (18)	0.066 (2)	0.062 (2)	−0.0022 (17)	0.0132 (16)	−0.0082 (19)
C4	0.0480 (19)	0.063 (2)	0.0496 (19)	0.0088 (17)	0.0157 (15)	0.0043 (17)
C5	0.060 (2)	0.056 (2)	0.055 (2)	−0.0002 (17)	0.0187 (16)	−0.0035 (17)
C6	0.0488 (19)	0.059 (2)	0.0521 (19)	−0.0069 (16)	0.0157 (15)	−0.0022 (17)
C7	0.0431 (17)	0.063 (2)	0.0383 (17)	−0.0018 (16)	0.0094 (13)	0.0092 (16)
C8	0.0398 (17)	0.073 (2)	0.056 (2)	−0.0058 (16)	0.0100 (15)	0.0081 (18)
C9	0.0394 (16)	0.060 (2)	0.0392 (17)	0.0029 (15)	0.0112 (13)	0.0092 (16)
C10	0.0408 (16)	0.054 (2)	0.0361 (16)	0.0024 (15)	0.0092 (13)	0.0091 (15)
C11	0.0417 (16)	0.054 (2)	0.0365 (16)	0.0077 (15)	0.0113 (13)	0.0096 (15)
C12	0.0387 (17)	0.063 (2)	0.0408 (17)	0.0066 (16)	0.0130 (13)	0.0126 (16)
C13	0.0441 (18)	0.067 (2)	0.0418 (17)	0.0122 (16)	0.0145 (14)	0.0101 (16)
C14	0.0556 (19)	0.058 (2)	0.0350 (16)	0.0144 (17)	0.0121 (14)	0.0073 (16)
C15	0.0418 (17)	0.055 (2)	0.0402 (17)	0.0032 (15)	0.0096 (13)	0.0062 (15)
C16	0.0503 (19)	0.061 (2)	0.0486 (19)	0.0069 (17)	0.0123 (15)	0.0064 (17)
C17	0.054 (2)	0.065 (2)	0.051 (2)	−0.0013 (18)	0.0082 (16)	0.0026 (18)
C18	0.071 (2)	0.061 (2)	0.0463 (19)	0.0031 (19)	0.0110 (17)	−0.0026 (17)
C19	0.061 (2)	0.062 (2)	0.0458 (19)	0.0103 (18)	0.0144 (16)	0.0056 (17)
C20	0.078 (3)	0.147 (5)	0.113 (4)	0.030 (3)	0.032 (3)	0.062 (4)
O6	0.089 (2)	0.151 (3)	0.0728 (18)	0.054 (2)	0.0329 (16)	0.009 (2)
C22	0.082 (4)	0.200 (7)	0.191 (6)	0.047 (4)	0.051 (4)	0.130 (6)

O1—N5	1.390 (4)	C8—H8A	0.9800
O1—H1	0.8400	C8—H8B	0.9800
N5—C13	1.318 (5)	C8—H8C	0.9800
O1A—N5A	1.392 (12)	C9—C10	1.413 (4)
O1A—H1A	0.8402	C11—C12	1.433 (4)
N5A—C13	1.286 (12)	C11—C15	1.453 (4)
N1—C10	1.360 (4)	C12—C13	1.464 (4)
N1—N2	1.389 (3)	C13—C14	1.472 (4)
N1—C1	1.427 (3)	C14—C19	1.382 (4)
N2—C7	1.317 (4)	C14—C15	1.414 (4)
N3—C11	1.331 (4)	C15—C16	1.391 (4)
N3—C10	1.346 (4)	C16—C17	1.394 (5)
N4—C12	1.324 (4)	C16—H16	0.9500
N4—C9	1.351 (4)	C17—C18	1.385 (4)
C1—C6	1.370 (4)	C17—H17	0.9500
C1—C2	1.382 (4)	C18—C19	1.389 (5)
C2—C3	1.389 (4)	C18—H18	0.9500
C2—H2	0.9500	C19—H19	0.9500
C3—C4	1.373 (5)	C20—O6	1.398 (5)
C3—H3	0.9500	C20—C22i	1.452 (6)
C4—C5	1.374 (4)	C20—H20A	0.9900
C4—H4	0.9500	C20—H20B	0.9900
C5—C6	1.382 (4)	O6—C22	1.403 (6)
C5—H5	0.9500	C22—C20i	1.452 (6)
C6—H6	0.9500	C22—H22A	0.9900
C7—C9	1.412 (4)	C22—H22B	0.9900
C7—C8	1.497 (4)
N5—O1—H1	95.1	N3—C11—C12	124.3 (3)
C13—N5—O1	110.4 (4)	N3—C11—C15	127.5 (3)
N5A—O1A—H1A	117.7	C12—C11—C15	108.2 (3)
C13—N5A—O1A	97.3 (9)	N4—C12—C11	123.9 (3)
C10—N1—N2	110.3 (2)	N4—C12—C13	127.9 (3)
C10—N1—C1	131.4 (3)	C11—C12—C13	108.2 (3)
N2—N1—C1	118.4 (2)	N5A—C13—C12	149.3 (6)
C7—N2—N1	107.5 (3)	N5—C13—C12	115.5 (3)
C11—N3—C10	111.0 (2)	N5A—C13—C14	104.2 (6)
C12—N4—C9	112.8 (2)	N5—C13—C14	138.0 (3)
C6—C1—C2	120.0 (3)	C12—C13—C14	106.5 (2)
C6—C1—N1	119.0 (3)	C19—C14—C15	120.5 (3)
C2—C1—N1	120.9 (3)	C19—C14—C13	130.9 (3)
C1—C2—C3	118.9 (3)	C15—C14—C13	108.6 (3)
C1—C2—H2	120.6	C16—C15—C14	120.8 (3)
C3—C2—H2	120.6	C16—C15—C11	130.6 (3)
C4—C3—C2	121.4 (3)	C14—C15—C11	108.6 (3)
C4—C3—H3	119.3	C15—C16—C17	118.0 (3)
C2—C3—H3	119.3	C15—C16—H16	121.0
C3—C4—C5	118.9 (3)	C17—C16—H16	121.0
C3—C4—H4	120.6	C18—C17—C16	120.8 (3)
C5—C4—H4	120.6	C18—C17—H17	119.6
C4—C5—C6	120.5 (3)	C16—C17—H17	119.6
C4—C5—H5	119.8	C17—C18—C19	121.6 (3)
C6—C5—H5	119.8	C17—C18—H18	119.2
C1—C6—C5	120.4 (3)	C19—C18—H18	119.2
C1—C6—H6	119.8	C14—C19—C18	118.3 (3)
C5—C6—H6	119.8	C14—C19—H19	120.9
N2—C7—C9	109.9 (3)	C18—C19—H19	120.9
N2—C7—C8	121.4 (3)	O6—C20—C22i	109.5 (4)
C9—C7—C8	128.6 (3)	O6—C20—H20A	109.8
C7—C8—H8A	109.5	C22i—C20—H20A	109.8
C7—C8—H8B	109.5	O6—C20—H20B	109.8
H8A—C8—H8B	109.5	C22i—C20—H20B	109.8
C7—C8—H8C	109.5	H20A—C20—H20B	108.2
H8A—C8—H8C	109.5	C20—O6—C22	107.6 (4)
H8B—C8—H8C	109.5	O6—C22—C20i	110.7 (5)
N4—C9—C7	131.5 (3)	O6—C22—H22A	109.5
N4—C9—C10	122.4 (3)	C20i—C22—H22A	109.5
C7—C9—C10	106.1 (3)	O6—C22—H22B	109.5
N3—C10—N1	128.2 (3)	C20i—C22—H22B	109.5
N3—C10—C9	125.6 (3)	H22A—C22—H22B	108.1
N1—C10—C9	106.2 (3)
C10—N1—N2—C7	0.9 (3)	C15—C11—C12—N4	−179.8 (3)
C1—N1—N2—C7	−178.2 (2)	N3—C11—C12—C13	179.6 (3)
C10—N1—C1—C6	176.7 (3)	C15—C11—C12—C13	0.5 (3)
N2—N1—C1—C6	−4.5 (4)	O1A—N5A—C13—C12	0 (2)
C10—N1—C1—C2	−4.3 (5)	O1A—N5A—C13—C14	179.8 (8)
N2—N1—C1—C2	174.6 (3)	O1—N5—C13—C12	177.9 (3)
C6—C1—C2—C3	0.2 (5)	O1—N5—C13—C14	0.6 (6)
N1—C1—C2—C3	−178.8 (3)	N4—C12—C13—N5A	0.6 (15)
C1—C2—C3—C4	−0.2 (5)	C11—C12—C13—N5A	−179.8 (14)
C2—C3—C4—C5	0.1 (5)	N4—C12—C13—N5	2.7 (5)
C3—C4—C5—C6	0.1 (5)	C11—C12—C13—N5	−177.7 (3)
C2—C1—C6—C5	−0.1 (5)	N4—C12—C13—C14	−179.2 (3)
N1—C1—C6—C5	179.0 (3)	C11—C12—C13—C14	0.4 (3)
C4—C5—C6—C1	0.0 (5)	N5A—C13—C14—C19	0.2 (8)
N1—N2—C7—C9	−0.5 (3)	N5—C13—C14—C19	−2.6 (7)
N1—N2—C7—C8	−179.4 (3)	C12—C13—C14—C19	−180.0 (3)
C12—N4—C9—C7	176.7 (3)	N5A—C13—C14—C15	178.9 (7)
C12—N4—C9—C10	−1.9 (4)	N5—C13—C14—C15	176.2 (4)
N2—C7—C9—N4	−178.8 (3)	C12—C13—C14—C15	−1.2 (3)
C8—C7—C9—N4	0.0 (5)	C19—C14—C15—C16	0.4 (4)
N2—C7—C9—C10	−0.1 (3)	C13—C14—C15—C16	−178.5 (3)
C8—C7—C9—C10	178.8 (3)	C19—C14—C15—C11	−179.5 (3)
C11—N3—C10—N1	−178.0 (3)	C13—C14—C15—C11	1.6 (3)
C11—N3—C10—C9	0.1 (4)	N3—C11—C15—C16	−0.3 (5)
N2—N1—C10—N3	177.4 (3)	C12—C11—C15—C16	178.8 (3)
C1—N1—C10—N3	−3.6 (5)	N3—C11—C15—C14	179.6 (3)
N2—N1—C10—C9	−1.0 (3)	C12—C11—C15—C14	−1.3 (3)
C1—N1—C10—C9	178.0 (3)	C14—C15—C16—C17	0.0 (4)
N4—C9—C10—N3	1.1 (5)	C11—C15—C16—C17	179.9 (3)
C7—C9—C10—N3	−177.8 (3)	C15—C16—C17—C18	−0.7 (5)
N4—C9—C10—N1	179.5 (3)	C16—C17—C18—C19	0.8 (5)
C7—C9—C10—N1	0.6 (3)	C15—C14—C19—C18	−0.2 (4)
C10—N3—C11—C12	−0.2 (4)	C13—C14—C19—C18	178.4 (3)
C10—N3—C11—C15	178.7 (3)	C17—C18—C19—C14	−0.4 (5)
C9—N4—C12—C11	1.8 (4)	C22i—C20—O6—C22	−59.7 (7)
C9—N4—C12—C13	−178.7 (3)	C20—O6—C22—C20i	60.4 (7)
N3—C11—C12—N4	−0.8 (5)

D—H···A	D—H	H···A	D···A	D—H···A
O1—H1···N4ii	0.84	2.04	2.878 (3)	172
O1a—H1a···N4ii	0.84	1.94	2.749 (5)	162

Table 1

Hydrogen-bond geometry (, )

DHA	DH	HA	D A	DHA
O1H1N4i	0.84	2.04	2.878(3)	172
O1aH1aN4i	0.84	1.94	2.749(5)	162

Symmetry code: (i) .