organic compounds
N-[1-(5-Acetamido-3-acetyl-2-methyl-2,3-dihydro-1,3,4-thiadiazol-2-yl)-2-phenylethyl]acetamide
aDepartment of Physics, Urumu Dhanalakshmi College, Tiruchirappalli, Tamilnadu 620 019, India, bDepartment of Physics, Periyar EVR College, Tiruchirappalli, Tamilnadu 620 023, India, cSchool of Chemistry, Bharathidasan University, Tiruchirappalli, Tamilnadu, India, dDepartment of Physics, Vivekananda College (Autonomous), Chennai, Tamilnadu, India, and eOrganic Chemistry Division, CLRI, Chennai 600 020, Tamilnadu, India
*Correspondence e-mail: sakthi2udc@yahoo.com
In the title compound, C17H22N4O3S, the dihedral angle between the planes of the thiadiazole and phenyl rings is 63.47 (7)°. The dihedral angle between the thiadiazole ring and the acetamide side chain is 7.72 (9)°. Molecules related by a 21 screw axis along the a axis are linked by intermolecular N—H⋯O hydrogen bonds generating a supramolecular chain.
Related literature
For related literature, see: Allen et al. (1987); Bhat et al. (1967); Castro et al. (1996); Nakagawa et al. (1996); Tehranchian et al. (2005); Wang et al. (1999, 2004).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2004); cell APEX2 and SAINT-NT (Bruker, 2004); data reduction: SAINT-NT and XPREP (Bruker, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: PLATON (Spek, 2003).
Supporting information
https://doi.org/10.1107/S1600536807064823/gd2020sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536807064823/gd2020Isup2.hkl
A mixture of powdered thiosemicarbazone (3.0 mmol, acetic hydride(0.5 ml) and pyridine(2.5 ml) was taken in a round bottom flask and heated on a water bath for 3hrs. The reaction mixture was evaporated under reduced pressure and diluted in methanol. The viscous liquid obtained was allowed to stand overnight. The colour less precipitate formed was seperated by filteration and crystalized in methanol.
All the hydrogen atoms were geometrically fixed and allowed to ride on their parent atoms with C—H = 0.86 - 0.97 Å, and Uiso = 1.5eq(C) for methyl H atoms and 1.2Ueq(C) for other H atoms.
Comment Thiadiazoles and their derivatives represent a group of compounds possessing a wide spectrum of biological activities such as hypoglycemic, antitubercular, antifungal and antibacterial properties (Bhat et al., 1967).
1,3,4-Thiadiazole derivatives are known to display a broad spectrum of pesticidal activity (Nakagawa et al., 1996; Castro & Ball, 1996 Wang et al., 1999, 2004).
Thiadiazole derivatives are known to exhibit high antibacterial activity against Staphylococcus aureus (Tehranchaian et al., 2005).
In the title compound (I), the thiadiazole ring adopts an mild envelop conformation with atom C11 at the flap position. C11 deviates from the mean planes through the other four atoms by 0.085 Å.
The molecular structure of (I) is shown in Fig 1. and selected geometric parameters are listed in Table 1. The bond lengths for C—S, C=N and N—N are within normal ranges (Allen et al., 1987). All the bondlengths and angles in (I) are as expected (Table 1). The dihedral angle between 1,3,4 thiadiazole ring and the phenyl ring is 63.47°. The dihedral angle between thiadiazole ring and the acetamide side chain(N4/C16/O3/C17) is 7.72°.
The molecules related by 21 screw along a axis (Fig 2)are linked by intermolecular N—H..O hydrogen bond (Table 1) generating a supramolecular chain.
For related literature, see: Allen et al. (1987); Bhat et al. (1967); Castro et al. (1996); Nakagawa et al. (1996); Tehranchaian et al. (2005); Wang et al. (1999, 2004).
Data collection: APEX2 (Bruker,2004); cell
APEX2 and SAINT-NT (Bruker,2004); data reduction: SAINT-NT and XPREP (Bruker,2004); program(s) used to solve structure: SHELXS97( Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: ORTEP-32 in WinGX (Farrugia, 1999); software used to prepare material for publication: PLATON (Spek, 2003).C17H22N4O3S | F(000) = 1536 |
Mr = 362.46 | Dx = 1.310 Mg m−3 |
Orthorhombic, Pbca | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ac 2ab | Cell parameters from 9035 reflections |
a = 18.3623 (9) Å | θ = 2.2–26.3° |
b = 14.1565 (7) Å | µ = 0.20 mm−1 |
c = 14.1386 (7) Å | T = 293 K |
V = 3675.3 (3) Å3 | Block, colourless |
Z = 8 | 0.26 × 0.22 × 0.18 mm |
Bruker AXS (Kappa Apex2) diffractometer | 5439 independent reflections |
Radiation source: fine focus sealed tube | 3358 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.051 |
ω and φ scan | θmax = 30.2°, θmin = 2.2° |
Absorption correction: multi-scan (SADABS; Bruker, 2004) | h = −25→25 |
Tmin = 0.949, Tmax = 0.965 | k = −19→19 |
81394 measured reflections | l = −19→19 |
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)] = 0.047 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.142 | H-atom parameters constrained |
S = 1.08 | w = 1/[σ2(Fo2) + (0.051P)2 + 1.6574P] where P = (Fo2 + 2Fc2)/3 |
5439 reflections | (Δ/σ)max = 0.001 |
230 parameters | Δρmax = 0.29 e Å−3 |
0 restraints | Δρmin = −0.27 e Å−3 |
C17H22N4O3S | V = 3675.3 (3) Å3 |
Mr = 362.46 | Z = 8 |
Orthorhombic, Pbca | Mo Kα radiation |
a = 18.3623 (9) Å | µ = 0.20 mm−1 |
b = 14.1565 (7) Å | T = 293 K |
c = 14.1386 (7) Å | 0.26 × 0.22 × 0.18 mm |
Bruker AXS (Kappa Apex2) diffractometer | 5439 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2004) | 3358 reflections with I > 2σ(I) |
Tmin = 0.949, Tmax = 0.965 | Rint = 0.051 |
81394 measured reflections |
R[F2 > 2σ(F2)] = 0.047 | 0 restraints |
wR(F2) = 0.142 | H-atom parameters constrained |
S = 1.08 | Δρmax = 0.29 e Å−3 |
5439 reflections | Δρmin = −0.27 e Å−3 |
230 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 | ||
S1 | 0.04506 (3) | 0.14250 (4) | 0.37866 (4) | 0.0480 (2) | |
O1 | 0.26773 (7) | 0.31882 (13) | 0.50299 (11) | 0.0618 (6) | |
O2 | 0.11963 (8) | 0.15943 (13) | 0.68677 (12) | 0.0696 (6) | |
O3 | −0.06481 (10) | 0.11352 (16) | 0.25369 (12) | 0.0888 (8) | |
N1 | 0.16783 (7) | 0.29087 (11) | 0.41582 (11) | 0.0401 (5) | |
N2 | 0.04313 (8) | 0.14086 (11) | 0.56343 (11) | 0.0422 (5) | |
N3 | −0.02981 (8) | 0.13470 (11) | 0.53490 (11) | 0.0401 (5) | |
N4 | −0.10278 (8) | 0.13086 (11) | 0.40394 (11) | 0.0421 (5) | |
C1 | 0.09604 (11) | 0.50438 (15) | 0.46158 (15) | 0.0524 (7) | |
C2 | 0.12526 (14) | 0.59118 (18) | 0.4846 (2) | 0.0698 (9) | |
C3 | 0.14873 (14) | 0.6084 (2) | 0.5741 (3) | 0.0777 (12) | |
C4 | 0.14151 (15) | 0.5396 (2) | 0.6414 (2) | 0.0784 (10) | |
C5 | 0.11216 (12) | 0.45324 (18) | 0.61921 (15) | 0.0582 (8) | |
C6 | 0.08915 (9) | 0.43394 (13) | 0.52857 (12) | 0.0388 (5) | |
C7 | 0.05980 (10) | 0.33795 (14) | 0.50539 (14) | 0.0432 (6) | |
C8 | 0.12175 (9) | 0.26612 (13) | 0.49578 (13) | 0.0379 (5) | |
C9 | 0.23630 (9) | 0.32101 (14) | 0.42653 (14) | 0.0437 (6) | |
C10 | 0.27272 (13) | 0.35813 (19) | 0.33969 (17) | 0.0669 (9) | |
C11 | 0.09697 (9) | 0.16235 (13) | 0.48823 (14) | 0.0413 (6) | |
C12 | 0.16144 (11) | 0.09402 (16) | 0.49016 (19) | 0.0620 (8) | |
C13 | 0.05799 (11) | 0.14390 (15) | 0.65799 (15) | 0.0495 (6) | |
C14 | −0.00481 (13) | 0.1274 (2) | 0.72238 (15) | 0.0648 (9) | |
C15 | −0.03488 (9) | 0.13573 (12) | 0.44545 (13) | 0.0364 (5) | |
C16 | −0.11462 (12) | 0.11840 (17) | 0.30958 (15) | 0.0548 (7) | |
C17 | −0.19294 (14) | 0.1094 (2) | 0.28282 (19) | 0.0813 (10) | |
H1 | 0.08074 | 0.49312 | 0.39990 | 0.0629* | |
H1A | 0.14921 | 0.29688 | 0.36249 | 0.0481* | |
H2 | 0.12890 | 0.63805 | 0.43878 | 0.0836* | |
H3 | 0.16948 | 0.66629 | 0.58949 | 0.0933* | |
H4 | 0.15670 | 0.55149 | 0.70300 | 0.0939* | |
H4A | −0.14116 | 0.13831 | 0.43907 | 0.0506* | |
H5 | 0.10777 | 0.40730 | 0.66588 | 0.0698* | |
H7A | 0.02674 | 0.31781 | 0.55496 | 0.0519* | |
H7B | 0.03266 | 0.34086 | 0.44660 | 0.0519* | |
H8 | 0.15177 | 0.27133 | 0.55285 | 0.0454* | |
H10A | 0.31957 | 0.32885 | 0.33275 | 0.1004* | |
H10B | 0.24330 | 0.34413 | 0.28534 | 0.1004* | |
H10C | 0.27870 | 0.42528 | 0.34516 | 0.1004* | |
H12A | 0.18898 | 0.10360 | 0.54708 | 0.0929* | |
H12B | 0.14379 | 0.03021 | 0.48833 | 0.0929* | |
H12C | 0.19204 | 0.10534 | 0.43629 | 0.0929* | |
H14A | 0.01262 | 0.11865 | 0.78579 | 0.0971* | |
H14B | −0.03685 | 0.18095 | 0.72041 | 0.0971* | |
H14C | −0.03073 | 0.07196 | 0.70249 | 0.0971* | |
H17A | −0.19782 | 0.11564 | 0.21550 | 0.1219* | |
H17B | −0.21082 | 0.04870 | 0.30220 | 0.1219* | |
H17C | −0.22058 | 0.15813 | 0.31353 | 0.1219* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0386 (2) | 0.0586 (3) | 0.0467 (3) | −0.0125 (2) | 0.0111 (2) | −0.0109 (2) |
O1 | 0.0318 (7) | 0.0912 (12) | 0.0624 (9) | −0.0136 (7) | −0.0069 (6) | 0.0129 (8) |
O2 | 0.0470 (8) | 0.0966 (13) | 0.0652 (10) | −0.0142 (8) | −0.0205 (7) | 0.0162 (9) |
O3 | 0.0711 (12) | 0.1449 (19) | 0.0504 (9) | −0.0258 (12) | 0.0057 (9) | −0.0311 (11) |
N1 | 0.0303 (7) | 0.0464 (9) | 0.0436 (8) | −0.0057 (6) | 0.0018 (6) | 0.0007 (7) |
N2 | 0.0281 (7) | 0.0531 (9) | 0.0454 (8) | −0.0080 (6) | −0.0011 (6) | 0.0075 (7) |
N3 | 0.0283 (7) | 0.0488 (9) | 0.0433 (8) | −0.0062 (6) | −0.0009 (6) | 0.0066 (7) |
N4 | 0.0320 (7) | 0.0535 (10) | 0.0409 (8) | −0.0048 (6) | 0.0004 (6) | 0.0000 (7) |
C1 | 0.0518 (11) | 0.0518 (12) | 0.0536 (12) | 0.0004 (9) | −0.0013 (9) | 0.0028 (10) |
C2 | 0.0607 (14) | 0.0488 (14) | 0.100 (2) | −0.0011 (11) | 0.0159 (13) | 0.0056 (13) |
C3 | 0.0532 (14) | 0.0568 (16) | 0.123 (3) | −0.0071 (11) | 0.0119 (15) | −0.0369 (17) |
C4 | 0.0715 (16) | 0.091 (2) | 0.0726 (17) | 0.0014 (14) | −0.0091 (13) | −0.0444 (16) |
C5 | 0.0665 (14) | 0.0674 (15) | 0.0406 (10) | 0.0033 (11) | 0.0007 (10) | −0.0107 (10) |
C6 | 0.0299 (8) | 0.0450 (10) | 0.0414 (9) | 0.0017 (7) | 0.0022 (7) | −0.0062 (8) |
C7 | 0.0293 (8) | 0.0481 (11) | 0.0523 (11) | −0.0021 (7) | 0.0007 (7) | −0.0030 (8) |
C8 | 0.0255 (7) | 0.0434 (10) | 0.0447 (9) | −0.0043 (7) | 0.0017 (7) | 0.0002 (8) |
C9 | 0.0323 (9) | 0.0447 (11) | 0.0540 (11) | −0.0037 (7) | 0.0041 (8) | 0.0032 (9) |
C10 | 0.0530 (13) | 0.0831 (18) | 0.0647 (14) | −0.0196 (12) | 0.0135 (11) | 0.0139 (12) |
C11 | 0.0282 (8) | 0.0451 (11) | 0.0507 (10) | −0.0038 (7) | 0.0041 (7) | 0.0027 (8) |
C12 | 0.0401 (11) | 0.0489 (13) | 0.0969 (18) | 0.0046 (9) | 0.0076 (11) | 0.0088 (12) |
C13 | 0.0444 (10) | 0.0548 (12) | 0.0492 (11) | −0.0061 (9) | −0.0091 (8) | 0.0102 (9) |
C14 | 0.0582 (13) | 0.0940 (19) | 0.0421 (11) | −0.0131 (12) | −0.0022 (10) | 0.0073 (11) |
C15 | 0.0322 (8) | 0.0364 (9) | 0.0406 (9) | −0.0064 (7) | 0.0033 (7) | −0.0010 (7) |
C16 | 0.0531 (12) | 0.0622 (14) | 0.0490 (11) | −0.0143 (10) | −0.0069 (9) | −0.0075 (10) |
C17 | 0.0591 (14) | 0.119 (2) | 0.0658 (16) | −0.0205 (15) | −0.0220 (12) | −0.0029 (15) |
S1—C11 | 1.841 (2) | C9—C10 | 1.494 (3) |
S1—C15 | 1.7480 (18) | C11—C12 | 1.529 (3) |
O1—C9 | 1.226 (2) | C13—C14 | 1.488 (3) |
O2—C13 | 1.223 (3) | C16—C17 | 1.493 (3) |
O3—C16 | 1.211 (3) | C1—H1 | 0.9300 |
N1—C8 | 1.455 (2) | C2—H2 | 0.9300 |
N1—C9 | 1.336 (2) | C3—H3 | 0.9300 |
N2—N3 | 1.402 (2) | C4—H4 | 0.9300 |
N2—C11 | 1.483 (2) | C5—H5 | 0.9300 |
N2—C13 | 1.365 (3) | C7—H7A | 0.9700 |
N3—C15 | 1.268 (2) | C7—H7B | 0.9700 |
N4—C15 | 1.380 (2) | C8—H8 | 0.9800 |
N4—C16 | 1.363 (3) | C10—H10A | 0.9600 |
N1—H1A | 0.8300 | C10—H10B | 0.9600 |
N4—H4A | 0.8700 | C10—H10C | 0.9600 |
C1—C6 | 1.381 (3) | C12—H12A | 0.9600 |
C1—C2 | 1.380 (3) | C12—H12B | 0.9600 |
C2—C3 | 1.359 (5) | C12—H12C | 0.9600 |
C3—C4 | 1.368 (5) | C14—H14A | 0.9600 |
C4—C5 | 1.372 (4) | C14—H14B | 0.9600 |
C5—C6 | 1.377 (3) | C14—H14C | 0.9600 |
C6—C7 | 1.498 (3) | C17—H17A | 0.9600 |
C7—C8 | 1.532 (3) | C17—H17B | 0.9600 |
C8—C11 | 1.542 (3) | C17—H17C | 0.9600 |
S1···O3 | 2.7130 (19) | C10···H4x | 2.6600 |
S1···N1 | 3.1257 (15) | C13···H7A | 2.9200 |
S1···N3 | 2.6042 (16) | C13···H8 | 2.9000 |
S1···H1A | 2.9100 | C13···H12A | 2.9300 |
S1···H7B | 2.9800 | H1···H7B | 2.4200 |
O1···N4i | 2.809 (2) | H1···O3xiii | 2.7800 |
O1···C17i | 3.275 (3) | H1···H14Axiv | 2.5800 |
O2···C12 | 3.029 (3) | H1A···S1 | 2.9100 |
O2···C8 | 3.094 (3) | H1A···H7B | 2.5300 |
O3···S1 | 2.7130 (19) | H1A···H10B | 2.1500 |
O1···H17Ci | 2.6200 | H1A···O2xiv | 2.6200 |
O1···H4Ai | 1.9600 | H2···H17Axiii | 2.5400 |
O1···H8 | 2.3400 | H3···O1xii | 2.7400 |
O1···H3ii | 2.7400 | H4···C10ix | 2.6600 |
O2···H8 | 2.5400 | H4···H10Aix | 2.5300 |
O2···H1Aiii | 2.6200 | H4···H10Cix | 2.3600 |
O2···H10Biii | 2.6600 | H4A···H17C | 2.3100 |
O2···H12A | 2.4800 | H4A···O1v | 1.9600 |
O3···H1iv | 2.7800 | H4A···C9v | 3.0000 |
N1···S1 | 3.1257 (15) | H4A···H12Bvi | 2.6000 |
N1···C1 | 3.360 (3) | H5···H7A | 2.5100 |
N2···S1 | 2.6127 (17) | H7A···N2 | 2.5300 |
N3···S1 | 2.6042 (16) | H7A···N3 | 2.8100 |
N3···C7 | 3.341 (2) | H7A···C13 | 2.9200 |
N4···O1v | 2.809 (2) | H7A···H5 | 2.5100 |
N1···H12C | 2.6800 | H7B···S1 | 2.9800 |
N2···H7A | 2.5300 | H7B···H1 | 2.4200 |
N3···H14B | 2.7100 | H7B···H1A | 2.5300 |
N3···H14C | 2.5300 | H7B···H14Axiv | 2.3700 |
N3···H7A | 2.8100 | H8···O1 | 2.3400 |
N4···H12Bvi | 2.8400 | H8···O2 | 2.5400 |
C1···N1 | 3.360 (3) | H8···C5 | 2.8400 |
C1···C6vii | 3.514 (3) | H8···C13 | 2.9000 |
C2···C7vii | 3.546 (3) | H8···H12A | 2.4700 |
C4···C14viii | 3.399 (4) | H10A···H4x | 2.5300 |
C4···C10ix | 3.527 (4) | H10B···H1A | 2.1500 |
C6···C1vii | 3.514 (3) | H10B···O2xiv | 2.6600 |
C6···C9 | 3.455 (2) | H10C···H4x | 2.3600 |
C7···C13 | 3.493 (3) | H12A···O2 | 2.4800 |
C7···C2vii | 3.546 (3) | H12A···C13 | 2.9300 |
C7···N3 | 3.341 (2) | H12A···H8 | 2.4700 |
C7···C15 | 3.455 (3) | H12A···C3ii | 3.0100 |
C8···O2 | 3.094 (3) | H12B···N4vi | 2.8400 |
C9···C6 | 3.455 (2) | H12B···H4Avi | 2.6000 |
C10···C4x | 3.527 (4) | H12C···N1 | 2.6800 |
C12···O2 | 3.029 (3) | H14A···H1iii | 2.5800 |
C13···C7 | 3.493 (3) | H14A···H7Biii | 2.3700 |
C14···C4xi | 3.399 (4) | H14B···N3 | 2.7100 |
C15···C7 | 3.455 (3) | H14C···N3 | 2.5300 |
C17···O1v | 3.275 (3) | H14C···C4xi | 3.0400 |
C3···H12Axii | 3.0100 | H17A···H2iv | 2.5400 |
C4···H14Cviii | 3.0400 | H17B···C4v | 3.0900 |
C4···H17Bi | 3.0900 | H17C···H4A | 2.3100 |
C5···H8 | 2.8400 | H17C···O1v | 2.6200 |
C9···H4Ai | 3.0000 | ||
C11—S1—C15 | 89.35 (8) | C6—C1—H1 | 119.00 |
C8—N1—C9 | 122.41 (15) | C1—C2—H2 | 120.00 |
N3—N2—C11 | 116.32 (14) | C3—C2—H2 | 120.00 |
N3—N2—C13 | 118.35 (15) | C2—C3—H3 | 120.00 |
C11—N2—C13 | 124.21 (15) | C4—C3—H3 | 120.00 |
N2—N3—C15 | 110.88 (14) | C3—C4—H4 | 120.00 |
C15—N4—C16 | 124.53 (16) | C5—C4—H4 | 120.00 |
C9—N1—H1A | 117.00 | C4—C5—H5 | 120.00 |
C8—N1—H1A | 119.00 | C6—C5—H5 | 120.00 |
C16—N4—H4A | 116.00 | C6—C7—H7A | 109.00 |
C15—N4—H4A | 119.00 | C6—C7—H7B | 109.00 |
C2—C1—C6 | 121.1 (2) | C8—C7—H7A | 109.00 |
C1—C2—C3 | 120.2 (2) | C8—C7—H7B | 109.00 |
C2—C3—C4 | 119.3 (3) | H7A—C7—H7B | 108.00 |
C3—C4—C5 | 120.9 (3) | N1—C8—H8 | 107.00 |
C4—C5—C6 | 120.7 (2) | C7—C8—H8 | 107.00 |
C1—C6—C7 | 122.54 (17) | C11—C8—H8 | 107.00 |
C5—C6—C7 | 119.61 (18) | C9—C10—H10A | 109.00 |
C1—C6—C5 | 117.84 (19) | C9—C10—H10B | 109.00 |
C6—C7—C8 | 110.76 (15) | C9—C10—H10C | 109.00 |
N1—C8—C7 | 109.93 (15) | H10A—C10—H10B | 109.00 |
N1—C8—C11 | 110.33 (15) | H10A—C10—H10C | 109.00 |
C7—C8—C11 | 114.81 (14) | H10B—C10—H10C | 109.00 |
O1—C9—C10 | 121.54 (17) | C11—C12—H12A | 109.00 |
N1—C9—C10 | 116.13 (17) | C11—C12—H12B | 109.00 |
O1—C9—N1 | 122.33 (18) | C11—C12—H12C | 109.00 |
N2—C11—C12 | 111.93 (16) | H12A—C12—H12B | 109.00 |
C8—C11—C12 | 111.91 (15) | H12A—C12—H12C | 109.00 |
S1—C11—C8 | 110.89 (13) | H12B—C12—H12C | 109.00 |
S1—C11—C12 | 108.63 (15) | C13—C14—H14A | 109.00 |
S1—C11—N2 | 103.11 (11) | C13—C14—H14B | 109.00 |
N2—C11—C8 | 110.03 (15) | C13—C14—H14C | 109.00 |
O2—C13—N2 | 121.11 (19) | H14A—C14—H14B | 109.00 |
O2—C13—C14 | 122.8 (2) | H14A—C14—H14C | 109.00 |
N2—C13—C14 | 116.07 (17) | H14B—C14—H14C | 109.00 |
S1—C15—N3 | 118.54 (13) | C16—C17—H17A | 109.00 |
S1—C15—N4 | 122.13 (14) | C16—C17—H17B | 109.00 |
N3—C15—N4 | 119.34 (16) | C16—C17—H17C | 109.00 |
O3—C16—C17 | 123.9 (2) | H17A—C17—H17B | 109.00 |
N4—C16—C17 | 114.38 (19) | H17A—C17—H17C | 109.00 |
O3—C16—N4 | 121.7 (2) | H17B—C17—H17C | 109.00 |
C2—C1—H1 | 119.00 | ||
C15—S1—C11—N2 | 11.14 (12) | C16—N4—C15—S1 | 9.0 (3) |
C15—S1—C11—C8 | −106.59 (13) | C16—N4—C15—N3 | −170.58 (19) |
C15—S1—C11—C12 | 130.03 (14) | C15—N4—C16—O3 | −2.4 (3) |
C11—S1—C15—N3 | −7.87 (16) | C15—N4—C16—C17 | 176.33 (19) |
C11—S1—C15—N4 | 172.58 (15) | C6—C1—C2—C3 | 0.8 (4) |
C9—N1—C8—C7 | 111.74 (19) | C2—C1—C6—C5 | 0.2 (3) |
C9—N1—C8—C11 | −120.66 (18) | C2—C1—C6—C7 | −178.1 (2) |
C8—N1—C9—O1 | 9.2 (3) | C1—C2—C3—C4 | −1.5 (4) |
C8—N1—C9—C10 | −170.62 (18) | C2—C3—C4—C5 | 1.2 (4) |
C11—N2—N3—C15 | 9.4 (2) | C3—C4—C5—C6 | −0.1 (4) |
C13—N2—N3—C15 | 177.80 (17) | C4—C5—C6—C1 | −0.6 (3) |
N3—N2—C11—S1 | −13.94 (17) | C4—C5—C6—C7 | 177.8 (2) |
N3—N2—C11—C8 | 104.40 (17) | C1—C6—C7—C8 | 101.7 (2) |
N3—N2—C11—C12 | −130.51 (17) | C5—C6—C7—C8 | −76.6 (2) |
C13—N2—C11—S1 | 178.39 (15) | C6—C7—C8—N1 | −64.50 (19) |
C13—N2—C11—C8 | −63.3 (2) | C6—C7—C8—C11 | 170.43 (15) |
C13—N2—C11—C12 | 61.8 (2) | N1—C8—C11—S1 | −59.86 (16) |
N3—N2—C13—O2 | −172.06 (19) | N1—C8—C11—N2 | −173.28 (13) |
N3—N2—C13—C14 | 7.9 (3) | N1—C8—C11—C12 | 61.6 (2) |
C11—N2—C13—O2 | −4.6 (3) | C7—C8—C11—S1 | 65.02 (18) |
C11—N2—C13—C14 | 175.33 (19) | C7—C8—C11—N2 | −48.4 (2) |
N2—N3—C15—S1 | 0.9 (2) | C7—C8—C11—C12 | −173.52 (17) |
N2—N3—C15—N4 | −179.59 (15) |
Symmetry codes: (i) x+1/2, −y+1/2, −z+1; (ii) −x+1/2, y−1/2, z; (iii) x, −y+1/2, z+1/2; (iv) −x, y−1/2, −z+1/2; (v) x−1/2, −y+1/2, −z+1; (vi) −x, −y, −z+1; (vii) −x, −y+1, −z+1; (viii) −x, y+1/2, −z+3/2; (ix) −x+1/2, −y+1, z+1/2; (x) −x+1/2, −y+1, z−1/2; (xi) −x, y−1/2, −z+3/2; (xii) −x+1/2, y+1/2, z; (xiii) −x, y+1/2, −z+1/2; (xiv) x, −y+1/2, z−1/2. |
D—H···A | D—H | H···A | D···A | D—H···A |
N4—H4A···O1v | 0.8700 | 1.9600 | 2.809 (2) | 166.00 |
Symmetry code: (v) x−1/2, −y+1/2, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C17H22N4O3S |
Mr | 362.46 |
Crystal system, space group | Orthorhombic, Pbca |
Temperature (K) | 293 |
a, b, c (Å) | 18.3623 (9), 14.1565 (7), 14.1386 (7) |
V (Å3) | 3675.3 (3) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 0.20 |
Crystal size (mm) | 0.26 × 0.22 × 0.18 |
Data collection | |
Diffractometer | Bruker AXS (Kappa Apex2) diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2004) |
Tmin, Tmax | 0.949, 0.965 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 81394, 5439, 3358 |
Rint | 0.051 |
(sin θ/λ)max (Å−1) | 0.708 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.047, 0.142, 1.08 |
No. of reflections | 5439 |
No. of parameters | 230 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.29, −0.27 |
Computer programs: APEX2 (Bruker,2004), APEX2 and SAINT-NT (Bruker,2004), SAINT-NT and XPREP (Bruker,2004), SHELXS97( Sheldrick, 1997), SHELXL97 (Sheldrick, 1997), ORTEP-32 in WinGX (Farrugia, 1999), PLATON (Spek, 2003).
D—H···A | D—H | H···A | D···A | D—H···A |
N4—H4A···O1i | 0.8700 | 1.9600 | 2.809 (2) | 166.00 |
Symmetry code: (i) x−1/2, −y+1/2, −z+1. |
Acknowledgements
The data set was collected at SAIF (IIT, Chennai), a facility funded by the Department of Science and Technology (New Delhi), India.
References
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Comment Thiadiazoles and their derivatives represent a group of compounds possessing a wide spectrum of biological activities such as hypoglycemic, antitubercular, antifungal and antibacterial properties (Bhat et al., 1967).
1,3,4-Thiadiazole derivatives are known to display a broad spectrum of pesticidal activity (Nakagawa et al., 1996; Castro & Ball, 1996 Wang et al., 1999, 2004).
Thiadiazole derivatives are known to exhibit high antibacterial activity against Staphylococcus aureus (Tehranchaian et al., 2005).
In the title compound (I), the thiadiazole ring adopts an mild envelop conformation with atom C11 at the flap position. C11 deviates from the mean planes through the other four atoms by 0.085 Å.
The molecular structure of (I) is shown in Fig 1. and selected geometric parameters are listed in Table 1. The bond lengths for C—S, C=N and N—N are within normal ranges (Allen et al., 1987). All the bondlengths and angles in (I) are as expected (Table 1). The dihedral angle between 1,3,4 thiadiazole ring and the phenyl ring is 63.47°. The dihedral angle between thiadiazole ring and the acetamide side chain(N4/C16/O3/C17) is 7.72°.
The molecules related by 21 screw along a axis (Fig 2)are linked by intermolecular N—H..O hydrogen bond (Table 1) generating a supramolecular chain.