6-Bromo-4-(2-cyclo­hexyl­idenehydrazin-1-yl­idene)-1-methyl-2,2-dioxo-3,4-dihydro-1H-2λ6,1-benzothia­zine

Shafiq, M.; Khan, I.U.; Zia-ur-Rehman, M.; Arshad, M.N.; Safder, M.; Haider, Z.

doi:10.1107/S1600536812025123

organic compounds

CRYSTALLOGRAPHIC
COMMUNICATIONS

ISSN: 2056-9890

Volume 68| Part 7| July 2012| Pages o2088-o2089

https://doi.org/10.1107/S1600536812025123

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6-Bromo-4-(2-cyclohexylidenehydrazin-1-ylidene)-1-methyl-2,2-dioxo-3,4-dihydro-1H-2λ⁶,1-benzothiazine

Muhammad Shafiq,^a ^* Islam Ullah Khan,^b Muhammad Zia-ur-Rehman,^c Muhammad Nadeem Arshad,^d Muhammad Safder ^a and Zeeshan Haider ^b

^aDepartment of Chemistry, Government College University, Faisalabad 38040, Pakistan, ^bMaterials Chemistry Laboratory, Department of Chemistry, GC University, Lahore 54000, Pakistan, ^cApplied Chemistry Research Centre, PCSIR Laboratories Complex, Ferozpure Road, Lahore 54600, Pakistan, and ^dDepartment of Chemistry, University of Gujrat, Gujrat 50781, Pakistan
^*Correspondence e-mail: hafizshafique@hotmail.com

(Received 26 May 2012; accepted 2 June 2012; online 13 June 2012)

The asymmetric unit of the title compound, C₁₅H₁₈BrN₃O₂S, contains two independent molecules in both of which the (thiazine)C=N—N double bond exhibits an E conformation. The cyclohexyl rings adopt chair conformations while the thiazine rings are in sofa conformations. The mean planes of these rings are oriented at dihedral angles of 64.43 (13) and 28.6 (2)° in the two independent molecules while the aromatic and thiazine rings are twisted by dihedral angles of 8.73 (8) and 13.07 (2)°, respectively. In the crystal, C—H⋯O and C—H⋯Br interactions connect molecules into chains propagating along the a axis.

Related literature

For the synthesis of benzothiazines and their derivatives, see: Arshad et al. (2010 ); Shafiq et al. (2011a ,b ). For their biological activity, see: Zia-ur-Rehman et al. (2009). For related structures, see: Shafiq et al. (2011c ,d ). For puckering parameters, see: Cremer & Pople (1975 ).

Experimental

Crystal data

C₁₅H₁₈BrN₃O₂S
M_r = 384.29
Triclinic, $[P \overline 1]$
a = 9.9357 (2) Å
b = 11.2614 (3) Å
c = 15.8263 (3) Å
α = 110.625 (1)°
β = 91.525 (3)°
γ = 102.879 (4)°
V = 1604.85 (7) Å³
Z = 4
Mo Kα radiation
μ = 2.70 mm⁻¹
T = 296 K
0.25 × 0.21 × 0.13 mm

Data collection

Bruker KAPPA APEXII CCD diffractometer
Absorption correction: multi-scan (SADABS; Bruker, 2007 ) T_min = 0.552, T_max = 0.720
28996 measured reflections
7939 independent reflections
4380 reflections with I > 2σ(I)
R_int = 0.083

Refinement

R[F² > 2σ(F²)] = 0.049
wR(F²) = 0.125
S = 0.90
7939 reflections
399 parameters
H-atom parameters constrained
Δρ_max = 0.64 e Å⁻³
Δρ_min = −0.82 e Å⁻³

Table 1
Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
C25—H25A⋯Br2ⁱ	0.97	2.84	3.752 (4)	157
C8—H8A⋯Br1ⁱⁱ	0.97	3.21	4.081 (3)	151
C18—H18⋯O1ⁱⁱⁱ	0.93	2.59	3.332 (4)	137
Symmetry codes: (i) x-1, y, z; (ii) -x+1, -y+1, -z+1; (iii) -x+2, -y+1, -z+1.

Data collection: APEX2 (Bruker, 2007); cell refinement: SAINT (Bruker, 2007); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009 ); software used to prepare material for publication: WinGX (Farrugia, 1999 ) and PLATON.

Supporting information

Crystal structure: contains datablocks I, global. DOI: https://doi.org/10.1107/S1600536812025123/im2384sup1.cif

Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536812025123/im2384Isup2.hkl

Supporting information file. DOI: https://doi.org/10.1107/S1600536812025123/im2384Isup3.cml

checkCIF report

Comment top

In perpetuation of our research regarding the synthesis of benzothiazines (Shafiq et al., 2011a), (Arshad et al., 2010), their derivatives (Shafiq et al., 2011b) and biological evaluations (Zia-ur-Rehman et al., 2009) we herein report the structural analysis of the title compound.

The present structure is closely related to 6-bromo-4-hydrazinylidene-1-methyl-3H-2λ⁶,1-benzothiazine-2,2-dione (Shafiq et al., 2011c) and 6-bromo-1-methyl-4-[2- (4-methylbenzylidene) hydrazinylidene]-3H-2λ⁶,1-benzothiazine-2,2-dione (Shafiq et al., 2011d). The crystal structure comprises of two independent molecules A (C1—C15) and B (C16—C30) per asymmetric unit. The cyclohexyl moieties adopt chair conformations with r. m. s. deviations of 0.228 (3)° and 0.223 (4)° while sofa conformations are observed for the thiazine rings with r. m. s. deviavtions of 0.235 (2)° and 0.236 (2)° in A and B, respectively (Fig. 1). The point of difference between the two molecules is the dihedral angles between the fused aromatic and thiazine rings which are 8.73 (8)° and 13.07 (2)°. Moreover, cyclohexyl rings are oriented at dihedral angles of 64.43 (13)° and 28.64 (20)° with respect to thiazine rings in molecules A and B, respectively (Fig. 2). Both thiazine rings show different total ring puckering amplitude values as QT = 0.576 Å with (θ) = 50.8 (3)° and (π) = 353.7 (4)° for molecule A and QT = 0.578 Å with (θ) = 122.6 (3)° and (π) = 186.2 (4)° for molecule B (Cremer & Pople, 1975). The molecules do not show any classical hydrogen bonding although weak intermolecular interactions of the C—H···O and C—H···Br type have been observed (Table. 1, Fig. 3).

Related literature top

For the synthesis of benzothiazines and their derivatives, see: Arshad et al. (2010); Shafiq et al. (2011a,b). For their biological activity, see: Zia-ur-Rehman et al. (2009). For related structures, see: Shafiq et al. (2011c,d). For puckering parameters, see: Cremer & Pople (1975).

Experimental top

In the synthesis of title compound, 6-Bromo-4-hydrazinylidene-1- methyl-3H-2λ⁶,1-benzothiazine-2,2-dione (Shafiq et al., 2011c) was subjected to react with cyclohexanone according to a literature procedure (yield: 56.7%, Shafiq et al., 2011b). The product obtained was then recrystallized from ethyl acetate by slow evaporation of the solvent to obtain suitable crystals for diffraction studies.

Structure description top

For the synthesis of benzothiazines and their derivatives, see: Arshad et al. (2010); Shafiq et al. (2011a,b). For their biological activity, see: Zia-ur-Rehman et al. (2009). For related structures, see: Shafiq et al. (2011c,d). For puckering parameters, see: Cremer & Pople (1975).

Computing details top

Data collection: APEX2 (Bruker, 2007); cell refinement: SAINT (Bruker, 2007); data reduction: SAINT (Bruker, 2007); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: WinGX (Farrugia, 1999) and PLATON (Spek, 2009).

Figures top

	Fig. 1. Molecular structure of (I) with thermal allipsoids drawn at the 40% probability level.
	Fig. 2. Perspective view showing the difference in dihedral angles between cyclohexyl rings with thiazine rings in both molecules.
	Fig. 3. Unit cell packing showing weak interactions of hydrogen bonds using dashed lines.

6-Bromo-4-(2-cyclohexylidenehydrazin-1-ylidene)-1-methyl-2,2-dioxo- 3,4-dihydro-1H-2λ⁶,1-benzothiazine top

Crystal data top

C₁₅H₁₈BrN₃O₂S	Z = 4
M_r = 384.29	F(000) = 784
Triclinic, P1	D_x = 1.591 Mg m⁻³
Hall symbol: -P 1	Mo Kα radiation, λ = 0.71073 Å
a = 9.9357 (2) Å	Cell parameters from 8531 reflections
b = 11.2614 (3) Å	θ = 2.6–24.9°
c = 15.8263 (3) Å	µ = 2.70 mm⁻¹
α = 110.625 (1)°	T = 296 K
β = 91.525 (3)°	Block, light yellow
γ = 102.879 (4)°	0.25 × 0.21 × 0.13 mm
V = 1604.85 (7) Å³

Data collection top

Bruker KAPPA APEXII CCD diffractometer	7939 independent reflections
Radiation source: fine-focus sealed tube	4380 reflections with I > 2σ(I)
Graphite monochromator	R_int = 0.083
φ and ω scans	θ_max = 28.3°, θ_min = 2.5°
Absorption correction: multi-scan (SADABS; Bruker, 2007)	h = −13→13
T_min = 0.552, T_max = 0.720	k = −14→15
28996 measured reflections	l = −21→20

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)] = 0.049	Hydrogen site location: inferred from neighbouring sites
wR(F²) = 0.125	H-atom parameters constrained
S = 0.90	w = 1/[σ²(F_o²) + (0.0673P)²] where P = (F_o² + 2F_c²)/3
7939 reflections	(Δ/σ)_max = 0.001
399 parameters	Δρ_max = 0.64 e Å⁻³
0 restraints	Δρ_min = −0.82 e Å⁻³

Crystal data top

C₁₅H₁₈BrN₃O₂S	γ = 102.879 (4)°
M_r = 384.29	V = 1604.85 (7) Å³
Triclinic, P1	Z = 4
a = 9.9357 (2) Å	Mo Kα radiation
b = 11.2614 (3) Å	µ = 2.70 mm⁻¹
c = 15.8263 (3) Å	T = 296 K
α = 110.625 (1)°	0.25 × 0.21 × 0.13 mm
β = 91.525 (3)°

Data collection top

Bruker KAPPA APEXII CCD diffractometer	7939 independent reflections
Absorption correction: multi-scan (SADABS; Bruker, 2007)	4380 reflections with I > 2σ(I)
T_min = 0.552, T_max = 0.720	R_int = 0.083
28996 measured reflections

Refinement top

R[F² > 2σ(F²)] = 0.049	0 restraints
wR(F²) = 0.125	H-atom parameters constrained
S = 0.90	Δρ_max = 0.64 e Å⁻³
7939 reflections	Δρ_min = −0.82 e Å⁻³
399 parameters

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	U_iso*/U_eq
Br1	0.15281 (3)	0.37923 (4)	0.62774 (3)	0.06860 (15)
Br2	0.91986 (3)	0.07710 (3)	0.13278 (3)	0.06029 (14)
S1	0.87214 (8)	0.61054 (8)	0.64609 (6)	0.0502 (2)
S2	0.35514 (8)	0.29988 (8)	0.04039 (6)	0.0484 (2)
O1	0.8657 (2)	0.5997 (2)	0.73305 (15)	0.0632 (6)
O2	0.9971 (2)	0.6817 (2)	0.62658 (19)	0.0695 (7)
O3	0.3870 (2)	0.2295 (2)	−0.04815 (15)	0.0605 (6)
O4	0.2674 (2)	0.3874 (2)	0.04923 (19)	0.0701 (7)
N1	0.7451 (3)	0.6722 (3)	0.62437 (18)	0.0496 (7)
N2	0.6362 (3)	0.2653 (3)	0.55860 (18)	0.0500 (7)
N3	0.7411 (3)	0.1977 (3)	0.53974 (19)	0.0553 (7)
N4	0.4992 (3)	0.3844 (2)	0.1089 (2)	0.0530 (7)
N5	0.3694 (3)	0.0088 (3)	0.11621 (19)	0.0500 (7)
N6	0.2248 (3)	−0.0462 (3)	0.1053 (2)	0.0602 (8)
C1	0.6078 (3)	0.6025 (3)	0.62716 (19)	0.0390 (7)
C2	0.5052 (3)	0.6705 (3)	0.6535 (2)	0.0463 (8)
H2	0.5286	0.7612	0.6714	0.056*
C3	0.3695 (3)	0.6060 (3)	0.6537 (2)	0.0479 (8)
H3	0.3018	0.6522	0.6710	0.058*
C4	0.3370 (3)	0.4723 (3)	0.6278 (2)	0.0438 (7)
C5	0.4364 (3)	0.4031 (3)	0.6025 (2)	0.0424 (7)
H5	0.4120	0.3126	0.5862	0.051*
C6	0.5730 (3)	0.4666 (3)	0.60093 (18)	0.0365 (7)
C7	0.6755 (3)	0.3872 (3)	0.57341 (18)	0.0401 (7)
C8	0.8190 (3)	0.4518 (3)	0.5629 (2)	0.0483 (8)
H8A	0.8209	0.4565	0.5029	0.058*
H8B	0.8826	0.4005	0.5690	0.058*
C9	0.7090 (3)	0.0879 (3)	0.4734 (2)	0.0500 (8)
C10	0.8150 (4)	0.0082 (4)	0.4558 (3)	0.0683 (10)
H10A	0.8998	0.0582	0.4962	0.082*
H10B	0.7803	−0.0707	0.4685	0.082*
C11	0.8463 (4)	−0.0284 (4)	0.3592 (3)	0.0821 (13)
H11A	0.9064	−0.0882	0.3477	0.099*
H11B	0.8957	0.0496	0.3496	0.099*
C12	0.7159 (5)	−0.0924 (4)	0.2927 (3)	0.0837 (13)
H12A	0.6692	−0.1738	0.2989	0.100*
H12B	0.7399	−0.1124	0.2311	0.100*
C13	0.6195 (5)	−0.0004 (4)	0.3113 (3)	0.0828 (12)
H13A	0.6654	0.0797	0.3031	0.099*
H13B	0.5360	−0.0414	0.2684	0.099*
C14	0.5809 (4)	0.0316 (4)	0.4074 (3)	0.0654 (10)
H14A	0.5237	0.0939	0.4196	0.078*
H14B	0.5276	−0.0474	0.4140	0.078*
C15	0.7765 (4)	0.8096 (4)	0.6379 (3)	0.0755 (12)
H15A	0.7728	0.8600	0.7006	0.113*
H15B	0.7097	0.8245	0.6004	0.113*
H15C	0.8680	0.8356	0.6219	0.113*
C16	0.5950 (3)	0.3106 (3)	0.1156 (2)	0.0401 (7)
C17	0.7380 (3)	0.3686 (3)	0.1268 (2)	0.0498 (8)
H17	0.7686	0.4541	0.1290	0.060*
C18	0.8332 (3)	0.3004 (3)	0.1347 (2)	0.0500 (8)
H18	0.9280	0.3397	0.1434	0.060*
C19	0.7868 (3)	0.1732 (3)	0.1296 (2)	0.0430 (7)
C20	0.6479 (3)	0.1149 (3)	0.11944 (18)	0.0388 (7)
H20	0.6187	0.0288	0.1161	0.047*
C21	0.5492 (3)	0.1845 (3)	0.11393 (18)	0.0367 (7)
C22	0.4002 (3)	0.1204 (3)	0.10748 (19)	0.0382 (7)
C23	0.2919 (3)	0.1877 (3)	0.0914 (2)	0.0475 (8)
H23A	0.2612	0.2328	0.1490	0.057*
H23B	0.2121	0.1223	0.0529	0.057*
C24	0.1940 (3)	−0.1601 (4)	0.1095 (3)	0.0572 (9)
C25	0.0414 (4)	−0.2278 (4)	0.0967 (3)	0.0832 (14)
H25A	−0.0134	−0.1680	0.0931	0.100*
H25B	0.0201	−0.3028	0.0399	0.100*
C26	0.0037 (5)	−0.2716 (5)	0.1723 (4)	0.1089 (18)
H26A	−0.0917	−0.3237	0.1587	0.131*
H26B	0.0096	−0.1956	0.2272	0.131*
C27	0.0976 (5)	−0.3516 (5)	0.1886 (4)	0.1043 (17)
H27A	0.0738	−0.3734	0.2413	0.125*
H27B	0.0838	−0.4328	0.1365	0.125*
C28	0.2471 (4)	−0.2771 (5)	0.2039 (3)	0.0858 (13)
H28A	0.2620	−0.1995	0.2588	0.103*
H28B	0.3056	−0.3312	0.2126	0.103*
C29	0.2878 (4)	−0.2377 (4)	0.1263 (3)	0.0639 (10)
H29A	0.2817	−0.3150	0.0723	0.077*
H29B	0.3831	−0.1856	0.1397	0.077*
C30	0.5410 (5)	0.5235 (3)	0.1337 (3)	0.0853 (14)
H30A	0.5847	0.5634	0.1952	0.128*
H30B	0.4609	0.5560	0.1286	0.128*
H30C	0.6055	0.5445	0.0939	0.128*

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
Br1	0.0334 (2)	0.0842 (3)	0.0951 (3)	0.01748 (19)	0.01696 (18)	0.0388 (2)
Br2	0.03317 (19)	0.0630 (2)	0.0787 (3)	0.01020 (16)	−0.00475 (16)	0.02066 (19)
S1	0.0331 (4)	0.0531 (5)	0.0562 (5)	0.0042 (4)	−0.0052 (4)	0.0148 (4)
S2	0.0372 (4)	0.0466 (5)	0.0631 (5)	0.0076 (4)	−0.0008 (4)	0.0244 (4)
O1	0.0537 (15)	0.0742 (16)	0.0523 (14)	0.0061 (13)	−0.0159 (11)	0.0196 (12)
O2	0.0376 (14)	0.0679 (16)	0.095 (2)	−0.0009 (12)	0.0068 (13)	0.0282 (14)
O3	0.0568 (15)	0.0702 (15)	0.0562 (14)	0.0085 (12)	−0.0007 (11)	0.0302 (12)
O4	0.0488 (15)	0.0611 (15)	0.109 (2)	0.0164 (12)	−0.0021 (14)	0.0413 (15)
N1	0.0383 (15)	0.0487 (16)	0.0631 (17)	0.0087 (13)	0.0031 (13)	0.0237 (13)
N2	0.0390 (15)	0.0467 (16)	0.0614 (17)	0.0168 (13)	0.0036 (13)	0.0128 (13)
N3	0.0438 (16)	0.0534 (17)	0.0643 (18)	0.0243 (14)	0.0001 (13)	0.0093 (15)
N4	0.0394 (16)	0.0354 (15)	0.0760 (19)	0.0021 (12)	−0.0052 (14)	0.0161 (13)
N5	0.0254 (13)	0.0530 (17)	0.0722 (19)	−0.0032 (12)	0.0004 (12)	0.0320 (15)
N6	0.0285 (15)	0.0593 (19)	0.098 (2)	−0.0002 (13)	0.0013 (14)	0.0416 (18)
C1	0.0361 (17)	0.0449 (18)	0.0365 (16)	0.0088 (14)	−0.0001 (12)	0.0166 (13)
C2	0.050 (2)	0.0460 (18)	0.0438 (17)	0.0181 (16)	0.0061 (15)	0.0143 (14)
C3	0.0431 (19)	0.059 (2)	0.0473 (18)	0.0260 (17)	0.0089 (14)	0.0182 (16)
C4	0.0361 (17)	0.057 (2)	0.0405 (16)	0.0123 (15)	0.0063 (13)	0.0201 (15)
C5	0.0359 (17)	0.0468 (18)	0.0452 (17)	0.0126 (14)	0.0050 (13)	0.0163 (14)
C6	0.0322 (16)	0.0442 (17)	0.0320 (14)	0.0127 (13)	0.0006 (12)	0.0111 (13)
C7	0.0315 (16)	0.051 (2)	0.0338 (15)	0.0125 (14)	−0.0008 (12)	0.0095 (14)
C8	0.0338 (17)	0.0529 (19)	0.0552 (19)	0.0145 (15)	0.0023 (14)	0.0143 (16)
C9	0.050 (2)	0.053 (2)	0.0495 (19)	0.0191 (17)	0.0053 (15)	0.0184 (17)
C10	0.067 (3)	0.062 (2)	0.077 (3)	0.034 (2)	0.002 (2)	0.0162 (19)
C11	0.072 (3)	0.079 (3)	0.096 (3)	0.031 (2)	0.028 (3)	0.023 (3)
C12	0.110 (4)	0.079 (3)	0.054 (2)	0.024 (3)	0.027 (2)	0.013 (2)
C13	0.081 (3)	0.093 (3)	0.060 (3)	0.013 (3)	−0.009 (2)	0.017 (2)
C14	0.049 (2)	0.069 (2)	0.071 (2)	0.0138 (19)	0.0004 (18)	0.0177 (19)
C15	0.058 (2)	0.063 (3)	0.112 (3)	0.008 (2)	0.010 (2)	0.044 (2)
C16	0.0337 (16)	0.0363 (17)	0.0435 (17)	0.0012 (14)	−0.0001 (13)	0.0114 (13)
C17	0.0394 (18)	0.0411 (18)	0.061 (2)	−0.0049 (15)	−0.0010 (15)	0.0181 (16)
C18	0.0311 (17)	0.054 (2)	0.054 (2)	−0.0029 (15)	−0.0071 (14)	0.0152 (16)
C19	0.0295 (16)	0.0491 (19)	0.0459 (17)	0.0037 (14)	0.0015 (13)	0.0160 (14)
C20	0.0325 (16)	0.0373 (16)	0.0390 (16)	0.0012 (13)	0.0010 (12)	0.0098 (13)
C21	0.0257 (15)	0.0414 (17)	0.0351 (15)	−0.0005 (13)	0.0011 (12)	0.0100 (13)
C22	0.0294 (15)	0.0422 (18)	0.0399 (16)	0.0022 (13)	0.0032 (12)	0.0156 (13)
C23	0.0316 (17)	0.0493 (19)	0.062 (2)	0.0033 (14)	0.0055 (15)	0.0249 (16)
C24	0.0360 (19)	0.061 (2)	0.080 (2)	−0.0020 (17)	0.0003 (17)	0.042 (2)
C25	0.038 (2)	0.074 (3)	0.145 (4)	−0.0092 (19)	0.003 (2)	0.063 (3)
C26	0.067 (3)	0.098 (4)	0.181 (5)	0.020 (3)	0.065 (3)	0.071 (4)
C27	0.083 (3)	0.110 (4)	0.165 (5)	0.033 (3)	0.058 (3)	0.097 (4)
C28	0.075 (3)	0.109 (3)	0.109 (4)	0.037 (3)	0.030 (3)	0.073 (3)
C29	0.048 (2)	0.070 (2)	0.074 (2)	0.0146 (19)	0.0162 (18)	0.027 (2)
C30	0.091 (3)	0.041 (2)	0.110 (3)	0.010 (2)	−0.036 (3)	0.018 (2)

Geometric parameters (Å, º) top

Br1—C4	1.895 (3)	C12—H12A	0.9700
Br2—C19	1.896 (3)	C12—H12B	0.9700
S1—O2	1.425 (2)	C13—C14	1.516 (5)
S1—O1	1.426 (2)	C13—H13A	0.9700
S1—N1	1.652 (3)	C13—H13B	0.9700
S1—C8	1.758 (3)	C14—H14A	0.9700
S2—O4	1.429 (2)	C14—H14B	0.9700
S2—O3	1.430 (2)	C15—H15A	0.9600
S2—N4	1.647 (3)	C15—H15B	0.9600
S2—C23	1.742 (3)	C15—H15C	0.9600
N1—C1	1.425 (4)	C16—C21	1.382 (4)
N1—C15	1.444 (4)	C16—C17	1.403 (4)
N2—C7	1.273 (4)	C17—C18	1.374 (4)
N2—N3	1.403 (3)	C17—H17	0.9300
N3—C9	1.275 (4)	C18—C19	1.376 (4)
N4—C16	1.420 (4)	C18—H18	0.9300
N4—C30	1.432 (4)	C19—C20	1.368 (4)
N5—C22	1.283 (4)	C20—C21	1.404 (4)
N5—N6	1.411 (3)	C20—H20	0.9300
N6—C24	1.276 (4)	C21—C22	1.479 (4)
C1—C6	1.394 (4)	C22—C23	1.510 (4)
C1—C2	1.395 (4)	C23—H23A	0.9700
C2—C3	1.382 (4)	C23—H23B	0.9700
C2—H2	0.9300	C24—C29	1.489 (5)
C3—C4	1.371 (4)	C24—C25	1.510 (5)
C3—H3	0.9300	C25—C26	1.474 (6)
C4—C5	1.374 (4)	C25—H25A	0.9700
C5—C6	1.392 (4)	C25—H25B	0.9700
C5—H5	0.9300	C26—C27	1.509 (6)
C6—C7	1.477 (4)	C26—H26A	0.9700
C7—C8	1.491 (4)	C26—H26B	0.9700
C8—H8A	0.9700	C27—C28	1.500 (6)
C8—H8B	0.9700	C27—H27A	0.9700
C9—C14	1.488 (5)	C27—H27B	0.9700
C9—C10	1.502 (4)	C28—C29	1.483 (5)
C10—C11	1.498 (5)	C28—H28A	0.9700
C10—H10A	0.9700	C28—H28B	0.9700
C10—H10B	0.9700	C29—H29A	0.9700
C11—C12	1.510 (6)	C29—H29B	0.9700
C11—H11A	0.9700	C30—H30A	0.9600
C11—H11B	0.9700	C30—H30B	0.9600
C12—C13	1.523 (6)	C30—H30C	0.9600

O2—S1—O1	119.64 (16)	C9—C14—H14A	109.7
O2—S1—N1	107.23 (15)	C13—C14—H14A	109.7
O1—S1—N1	110.06 (14)	C9—C14—H14B	109.7
O2—S1—C8	110.50 (16)	C13—C14—H14B	109.7
O1—S1—C8	107.92 (15)	H14A—C14—H14B	108.2
N1—S1—C8	99.65 (15)	N1—C15—H15A	109.5
O4—S2—O3	118.78 (15)	N1—C15—H15B	109.5
O4—S2—N4	107.06 (15)	H15A—C15—H15B	109.5
O3—S2—N4	110.31 (14)	N1—C15—H15C	109.5
O4—S2—C23	110.93 (15)	H15A—C15—H15C	109.5
O3—S2—C23	108.25 (15)	H15B—C15—H15C	109.5
N4—S2—C23	99.86 (15)	C21—C16—C17	119.9 (3)
C1—N1—C15	121.1 (3)	C21—C16—N4	120.9 (3)
C1—N1—S1	116.1 (2)	C17—C16—N4	119.2 (3)
C15—N1—S1	118.5 (2)	C18—C17—C16	120.6 (3)
C7—N2—N3	115.1 (3)	C18—C17—H17	119.7
C9—N3—N2	115.5 (3)	C16—C17—H17	119.7
C16—N4—C30	121.9 (3)	C17—C18—C19	119.2 (3)
C16—N4—S2	115.3 (2)	C17—C18—H18	120.4
C30—N4—S2	119.6 (2)	C19—C18—H18	120.4
C22—N5—N6	113.0 (3)	C20—C19—C18	121.3 (3)
C24—N6—N5	113.2 (3)	C20—C19—Br2	120.2 (2)
C6—C1—C2	119.3 (3)	C18—C19—Br2	118.5 (2)
C6—C1—N1	121.0 (3)	C19—C20—C21	120.3 (3)
C2—C1—N1	119.6 (3)	C19—C20—H20	119.9
C3—C2—C1	121.4 (3)	C21—C20—H20	119.9
C3—C2—H2	119.3	C16—C21—C20	118.7 (3)
C1—C2—H2	119.3	C16—C21—C22	122.6 (3)
C4—C3—C2	118.6 (3)	C20—C21—C22	118.7 (3)
C4—C3—H3	120.7	N5—C22—C21	117.5 (3)
C2—C3—H3	120.7	N5—C22—C23	123.1 (3)
C3—C4—C5	121.2 (3)	C21—C22—C23	119.5 (3)
C3—C4—Br1	120.3 (2)	C22—C23—S2	112.2 (2)
C5—C4—Br1	118.6 (2)	C22—C23—H23A	109.2
C4—C5—C6	120.9 (3)	S2—C23—H23A	109.2
C4—C5—H5	119.6	C22—C23—H23B	109.2
C6—C5—H5	119.6	S2—C23—H23B	109.2
C5—C6—C1	118.6 (3)	H23A—C23—H23B	107.9
C5—C6—C7	118.5 (3)	N6—C24—C29	129.2 (3)
C1—C6—C7	122.9 (3)	N6—C24—C25	116.9 (3)
N2—C7—C6	117.9 (3)	C29—C24—C25	114.0 (3)
N2—C7—C8	122.9 (3)	C26—C25—C24	111.2 (4)
C6—C7—C8	119.2 (3)	C26—C25—H25A	109.4
C7—C8—S1	110.1 (2)	C24—C25—H25A	109.4
C7—C8—H8A	109.6	C26—C25—H25B	109.4
S1—C8—H8A	109.6	C24—C25—H25B	109.4
C7—C8—H8B	109.6	H25A—C25—H25B	108.0
S1—C8—H8B	109.6	C25—C26—C27	111.9 (3)
H8A—C8—H8B	108.2	C25—C26—H26A	109.2
N3—C9—C14	127.6 (3)	C27—C26—H26A	109.2
N3—C9—C10	116.9 (3)	C25—C26—H26B	109.2
C14—C9—C10	115.4 (3)	C27—C26—H26B	109.2
C11—C10—C9	110.9 (3)	H26A—C26—H26B	107.9
C11—C10—H10A	109.5	C28—C27—C26	110.7 (4)
C9—C10—H10A	109.5	C28—C27—H27A	109.5
C11—C10—H10B	109.5	C26—C27—H27A	109.5
C9—C10—H10B	109.5	C28—C27—H27B	109.5
H10A—C10—H10B	108.0	C26—C27—H27B	109.5
C10—C11—C12	112.1 (3)	H27A—C27—H27B	108.1
C10—C11—H11A	109.2	C29—C28—C27	111.8 (4)
C12—C11—H11A	109.2	C29—C28—H28A	109.3
C10—C11—H11B	109.2	C27—C28—H28A	109.3
C12—C11—H11B	109.2	C29—C28—H28B	109.3
H11A—C11—H11B	107.9	C27—C28—H28B	109.3
C11—C12—C13	109.6 (3)	H28A—C28—H28B	107.9
C11—C12—H12A	109.7	C28—C29—C24	109.7 (3)
C13—C12—H12A	109.7	C28—C29—H29A	109.7
C11—C12—H12B	109.7	C24—C29—H29A	109.7
C13—C12—H12B	109.7	C28—C29—H29B	109.7
H12A—C12—H12B	108.2	C24—C29—H29B	109.7
C14—C13—C12	110.3 (3)	H29A—C29—H29B	108.2
C14—C13—H13A	109.6	N4—C30—H30A	109.5
C12—C13—H13A	109.6	N4—C30—H30B	109.5
C14—C13—H13B	109.6	H30A—C30—H30B	109.5
C12—C13—H13B	109.6	N4—C30—H30C	109.5
H13A—C13—H13B	108.1	H30A—C30—H30C	109.5
C9—C14—C13	109.9 (3)	H30B—C30—H30C	109.5

O2—S1—N1—C1	171.4 (2)	C14—C9—C10—C11	50.5 (5)
O1—S1—N1—C1	−57.0 (3)	C9—C10—C11—C12	−52.2 (5)
C8—S1—N1—C1	56.3 (2)	C10—C11—C12—C13	57.8 (5)
O2—S1—N1—C15	−31.5 (3)	C11—C12—C13—C14	−59.5 (5)
O1—S1—N1—C15	100.1 (3)	N3—C9—C14—C13	123.9 (4)
C8—S1—N1—C15	−146.7 (3)	C10—C9—C14—C13	−52.7 (4)
C7—N2—N3—C9	−135.3 (3)	C12—C13—C14—C9	56.2 (5)
O4—S2—N4—C16	174.6 (2)	C30—N4—C16—C21	163.4 (3)
O3—S2—N4—C16	−54.8 (3)	S2—N4—C16—C21	−36.6 (4)
C23—S2—N4—C16	59.0 (3)	C30—N4—C16—C17	−14.6 (5)
O4—S2—N4—C30	−24.9 (4)	S2—N4—C16—C17	145.4 (3)
O3—S2—N4—C30	105.7 (3)	C21—C16—C17—C18	1.1 (5)
C23—S2—N4—C30	−140.5 (3)	N4—C16—C17—C18	179.2 (3)
C22—N5—N6—C24	176.7 (3)	C16—C17—C18—C19	1.3 (5)
C15—N1—C1—C6	170.4 (3)	C17—C18—C19—C20	−1.8 (5)
S1—N1—C1—C6	−33.2 (4)	C17—C18—C19—Br2	176.0 (2)
C15—N1—C1—C2	−7.4 (4)	C18—C19—C20—C21	0.0 (4)
S1—N1—C1—C2	149.0 (2)	Br2—C19—C20—C21	−177.8 (2)
C6—C1—C2—C3	−0.4 (4)	C17—C16—C21—C20	−2.9 (4)
N1—C1—C2—C3	177.4 (3)	N4—C16—C21—C20	179.1 (3)
C1—C2—C3—C4	0.5 (4)	C17—C16—C21—C22	176.5 (3)
C2—C3—C4—C5	0.2 (4)	N4—C16—C21—C22	−1.5 (4)
C2—C3—C4—Br1	179.5 (2)	C19—C20—C21—C16	2.4 (4)
C3—C4—C5—C6	−1.0 (5)	C19—C20—C21—C22	−177.0 (2)
Br1—C4—C5—C6	179.7 (2)	N6—N5—C22—C21	−177.6 (2)
C4—C5—C6—C1	1.1 (4)	N6—N5—C22—C23	2.6 (4)
C4—C5—C6—C7	179.8 (3)	C16—C21—C22—N5	−172.7 (3)
C2—C1—C6—C5	−0.4 (4)	C20—C21—C22—N5	6.7 (4)
N1—C1—C6—C5	−178.2 (3)	C16—C21—C22—C23	7.1 (4)
C2—C1—C6—C7	−179.0 (3)	C20—C21—C22—C23	−173.5 (3)
N1—C1—C6—C7	3.1 (4)	N5—C22—C23—S2	−157.0 (3)
N3—N2—C7—C6	−175.2 (2)	C21—C22—C23—S2	23.1 (3)
N3—N2—C7—C8	5.6 (4)	O4—S2—C23—C22	−163.5 (2)
C5—C6—C7—N2	−4.9 (4)	O3—S2—C23—C22	64.5 (3)
C1—C6—C7—N2	173.8 (3)	N4—S2—C23—C22	−50.9 (3)
C5—C6—C7—C8	174.3 (3)	N5—N6—C24—C29	1.8 (5)
C1—C6—C7—C8	−7.0 (4)	N5—N6—C24—C25	−178.8 (3)
N2—C7—C8—S1	−144.3 (3)	N6—C24—C25—C26	−127.0 (4)
C6—C7—C8—S1	36.6 (3)	C29—C24—C25—C26	52.5 (5)
O2—S1—C8—C7	−169.1 (2)	C24—C25—C26—C27	−52.1 (6)
O1—S1—C8—C7	58.4 (3)	C25—C26—C27—C28	55.2 (6)
N1—S1—C8—C7	−56.5 (2)	C26—C27—C28—C29	−57.4 (6)
N2—N3—C9—C14	8.1 (5)	C27—C28—C29—C24	56.2 (5)
N2—N3—C9—C10	−175.5 (3)	N6—C24—C29—C28	125.5 (4)
N3—C9—C10—C11	−126.4 (4)	C25—C24—C29—C28	−53.9 (5)

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
C25—H25A···Br2ⁱ	0.97	2.84	3.752 (4)	157
C8—H8A···Br1ⁱⁱ	0.97	3.21	4.081 (3)	151
C18—H18···O1ⁱⁱⁱ	0.93	2.59	3.332 (4)	137

Symmetry codes: (i) x−1, y, z; (ii) −x+1, −y+1, −z+1; (iii) −x+2, −y+1, −z+1.

Experimental details

Crystal data
Chemical formula	C₁₅H₁₈BrN₃O₂S
M_r	384.29
Crystal system, space group	Triclinic, P1
Temperature (K)	296
a, b, c (Å)	9.9357 (2), 11.2614 (3), 15.8263 (3)
α, β, γ (°)	110.625 (1), 91.525 (3), 102.879 (4)
V (Å³)	1604.85 (7)
Z	4
Radiation type	Mo Kα
µ (mm⁻¹)	2.70
Crystal size (mm)	0.25 × 0.21 × 0.13

Data collection
Diffractometer	Bruker KAPPA APEXII CCD
Absorption correction	Multi-scan (SADABS; Bruker, 2007)
T_min, T_max	0.552, 0.720
No. of measured, independent and observed [I > 2σ(I)] reflections	28996, 7939, 4380
R_int	0.083
(sin θ/λ)_max (Å⁻¹)	0.668

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.049, 0.125, 0.90
No. of reflections	7939
No. of parameters	399
H-atom treatment	H-atom parameters constrained
Δρ_max, Δρ_min (e Å⁻³)	0.64, −0.82

Computer programs: APEX2 (Bruker, 2007), SAINT (Bruker, 2007), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), WinGX (Farrugia, 1999) and PLATON (Spek, 2009).

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
C25—H25A···Br2ⁱ	0.97	2.84	3.752 (4)	156.8
C8—H8A···Br1ⁱⁱ	0.97	3.21	4.081 (3)	151.0
C18—H18···O1ⁱⁱⁱ	0.93	2.59	3.332 (4)	136.9

Symmetry codes: (i) x−1, y, z; (ii) −x+1, −y+1, −z+1; (iii) −x+2, −y+1, −z+1.

Acknowledgements

MS acknowledges the Higher Education Commission of Pakistan for supporting funds, GC University Lahore, Pakistan for laboratory facilities and Dr Michael Harmata (University of Missouri, USA) for guidance during his PhD studies.

References

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