organic compounds
6-Chloro-3-[(dimethylamino)methylidene]thiochroman-4-one
aDepartment of Chemistry, Karnatak University, Dharwad 580 003, India, and bDepartment of Studies in Chemistry, Bangalore University, Bangalore 560 001, Karnataka, India
*Correspondence e-mail: dr_imk@yahoo.com
The 12H12ClNOS, contains three independent molecules, with the thiochroman ring adopting a sofa conformation in each one. The features C—H⋯O interactions; one of the O atoms accepts three such bonds. Together, the hydrogen bonds give rise to a molecular tape propagating in [010].
of the title compound, CRelated literature
For general background and the antifungal activity of thiochromans, see: Wang et al. (2010); Sosnovskikh (2003). For the of a related compound, see: Butt et al. (1988).
Experimental
Crystal data
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Data collection: SMART (Bruker, 1998); cell SAINT-Plus (Bruker, 1998); data reduction: SAINT-Plus; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 2012) and CAMERON (Watkin et al., 1996); software used to prepare material for publication: WinGX (Farrugia, 2012).
Supporting information
10.1107/S1600536813024550/pv2641sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536813024550/pv2641Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536813024550/pv2641Isup3.cml
A mixture of 6-chloro -thiochroman-4-one (0.01 mol) and dimethylformamide-dimethylacetal (DMF-DMA) (2 mL) was heated under reflux for 10 h. The reaction mixture was triturated with ethanol to give a solid product that was collected by filtration and crystallized from ethanol to give the title compound as deep yellow crystals, melting point 379–381 K. Yield 78%.
The H atoms were placed at calculated positions in the riding model approximation with C—H = 0.97° A, 0.93 Å and 0.96 Å for aromatic, heterocyclic and methyl H-atoms respectively, with Uiso(H) = 1.5Ueq(C) for methyl H atoms and Uiso(H) = 1.2Ueq(N/C). Since the crystals contained racemic twins, an
could not be established and therefore, 2865 Friedel pairs of reflections were merged.Data collection: SMART (Bruker, 1998); cell
SAINT-Plus (Bruker, 1998); data reduction: SAINT-Plus (Bruker, 1998); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 2012) and CAMERON (Watkin et al., 1996); software used to prepare material for publication: WinGX (Farrugia, 2012).Fig. 1. ORTEP (Farrugia, 2012) diagram of the three independent molecules present in the asymmetric unit of the title compound, showing 50% probability displacement ellipsoids and the atom-numbering scheme. | |
Fig. 2. A unit cell packing of the title compound showing intermolecular interactions with dotted lines. H-atoms not involved in hydrogen bonding have been excluded. |
C12H12ClNOS | F(000) = 792 |
Mr = 253.74 | Dx = 1.418 Mg m−3 |
Monoclinic, P21 | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: P 2yb | Cell parameters from 6540 reflections |
a = 11.0031 (3) Å | θ = 1.6–26.1° |
b = 12.5937 (3) Å | µ = 0.47 mm−1 |
c = 13.0787 (3) Å | T = 296 K |
β = 100.255 (2)° | Block, yellow |
V = 1783.36 (8) Å3 | 0.18 × 0.16 × 0.16 mm |
Z = 6 |
Bruker SMART APEX CCD detector diffractometer | 6540 independent reflections |
Radiation source: fine-focus sealed tube | 5418 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.023 |
ω scans | θmax = 26.1°, θmin = 1.6° |
Absorption correction: multi-scan (SADABS; Bruker, 1998) | h = −13→11 |
Tmin = 0.920, Tmax = 0.928 | k = −15→15 |
13306 measured reflections | l = −15→16 |
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)] = 0.039 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.087 | H-atom parameters constrained |
S = 1.01 | w = 1/[σ2(Fo2) + (0.0363P)2 + 0.3396P] where P = (Fo2 + 2Fc2)/3 |
6540 reflections | (Δ/σ)max = 0.001 |
440 parameters | Δρmax = 0.20 e Å−3 |
1 restraint | Δρmin = −0.32 e Å−3 |
C12H12ClNOS | V = 1783.36 (8) Å3 |
Mr = 253.74 | Z = 6 |
Monoclinic, P21 | Mo Kα radiation |
a = 11.0031 (3) Å | µ = 0.47 mm−1 |
b = 12.5937 (3) Å | T = 296 K |
c = 13.0787 (3) Å | 0.18 × 0.16 × 0.16 mm |
β = 100.255 (2)° |
Bruker SMART APEX CCD detector diffractometer | 6540 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 1998) | 5418 reflections with I > 2σ(I) |
Tmin = 0.920, Tmax = 0.928 | Rint = 0.023 |
13306 measured reflections |
R[F2 > 2σ(F2)] = 0.039 | 1 restraint |
wR(F2) = 0.087 | H-atom parameters constrained |
S = 1.01 | Δρmax = 0.20 e Å−3 |
6540 reflections | Δρmin = −0.32 e Å−3 |
440 parameters |
Geometry. All s.u.'s (except the s.u. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell s.u.'s are taken into account individually in the estimation of s.u.'s in distances, angles and torsion angles; correlations between s.u.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell s.u.'s is used for estimating s.u.'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 > 2σ(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 | ||
S1C | −3.42533 (9) | −0.93986 (6) | −0.35478 (6) | 0.0616 (2) | |
S1B | −3.07997 (9) | −1.52311 (6) | −0.62968 (7) | 0.0660 (2) | |
Cl1C | −3.52910 (9) | −1.26958 (9) | −0.02286 (7) | 0.0825 (3) | |
S1A | −3.07889 (9) | −2.03016 (7) | −0.89801 (6) | 0.0696 (3) | |
Cl1B | −3.19333 (10) | −1.20168 (9) | −0.29486 (7) | 0.0839 (3) | |
C6B | −3.1874 (3) | −1.2629 (3) | −0.4910 (2) | 0.0522 (8) | |
H6B | −3.2190 | −1.1957 | −0.5095 | 0.063* | |
C4C | −3.5168 (3) | −1.1744 (2) | −0.4045 (2) | 0.0437 (7) | |
O1C | −3.5194 (2) | −1.27163 (15) | −0.41754 (16) | 0.0634 (6) | |
C6C | −3.5265 (3) | −1.2055 (3) | −0.2193 (2) | 0.0481 (7) | |
H6C | −3.5614 | −1.2713 | −0.2389 | 0.058* | |
O1A | −3.1373 (2) | −1.69412 (16) | −0.86749 (15) | 0.0683 (7) | |
N1 | −3.2097 (2) | −1.3641 (2) | −0.95226 (19) | 0.0548 (6) | |
C5B | −3.1633 (3) | −1.3321 (2) | −0.5676 (2) | 0.0469 (7) | |
C2C | −3.5249 (3) | −1.0987 (2) | −0.4879 (2) | 0.0417 (7) | |
C5C | −3.5017 (2) | −1.1352 (2) | −0.2945 (2) | 0.0401 (6) | |
C2B | −3.1897 (3) | −1.3663 (2) | −0.7622 (2) | 0.0480 (7) | |
N2 | −3.1930 (2) | −1.85555 (19) | −0.61376 (18) | 0.0487 (6) | |
C6A | −3.1601 (3) | −1.7658 (2) | −1.0679 (2) | 0.0470 (7) | |
H6A | −3.1830 | −1.6959 | −1.0582 | 0.056* | |
C3B | −3.1897 (3) | −1.3229 (2) | −0.8579 (2) | 0.0486 (7) | |
H3B | −3.1724 | −1.2506 | −0.8563 | 0.058* | |
N3 | −3.5292 (2) | −1.0987 (2) | −0.67712 (19) | 0.0542 (7) | |
C5A | −3.1416 (3) | −1.8353 (2) | −0.9845 (2) | 0.0429 (7) | |
C9B | −3.0975 (3) | −1.4623 (3) | −0.4334 (3) | 0.0611 (9) | |
H9B | −3.0674 | −1.5297 | −0.4137 | 0.073* | |
C10C | −3.4542 (3) | −1.0344 (2) | −0.2642 (2) | 0.0455 (7) | |
C3C | −3.5134 (3) | −1.1407 (2) | −0.5828 (2) | 0.0455 (7) | |
H3C | −3.4902 | −1.2118 | −0.5803 | 0.055* | |
C3A | −3.1682 (3) | −1.8183 (2) | −0.7022 (2) | 0.0449 (7) | |
H3A | −3.1447 | −1.7473 | −0.6987 | 0.054* | |
C4A | −3.1493 (3) | −1.7912 (2) | −0.8782 (2) | 0.0465 (7) | |
O1B | −3.1807 (3) | −1.19390 (17) | −0.68895 (17) | 0.0804 (8) | |
C2A | −3.1701 (3) | −1.8629 (2) | −0.7978 (2) | 0.0454 (7) | |
C10B | −3.1184 (3) | −1.4340 (2) | −0.5381 (2) | 0.0494 (7) | |
C8B | −3.1206 (3) | −1.3923 (3) | −0.3592 (3) | 0.0618 (9) | |
H8B | −3.1063 | −1.4118 | −0.2895 | 0.074* | |
C4B | −3.1791 (3) | −1.2914 (2) | −0.6772 (2) | 0.0515 (8) | |
C9C | −3.4249 (3) | −1.0108 (3) | −0.1581 (2) | 0.0600 (9) | |
H9C | −3.3896 | −0.9455 | −0.1371 | 0.072* | |
C12A | −3.1723 (3) | −1.7894 (3) | −0.5204 (2) | 0.0600 (9) | |
H12A | −3.1380 | −1.7224 | −0.5358 | 0.090* | |
H12B | −3.1160 | −1.8246 | −0.4665 | 0.090* | |
H12C | −3.2494 | −1.7776 | −0.4975 | 0.090* | |
C10A | −3.1085 (3) | −1.9398 (2) | −1.0013 (2) | 0.0478 (7) | |
C12B | −3.1897 (3) | −1.3005 (3) | −1.0410 (2) | 0.0672 (10) | |
H12D | −3.1612 | −1.2311 | −1.0176 | 0.101* | |
H12E | −3.2659 | −1.2943 | −1.0895 | 0.101* | |
H12F | −3.1289 | −1.3343 | −1.0743 | 0.101* | |
C7A | −3.1449 (3) | −1.7990 (2) | −1.1649 (2) | 0.0503 (7) | |
C1B | −3.1963 (3) | −1.4825 (2) | −0.7383 (2) | 0.0601 (9) | |
H1B1 | −3.1860 | −1.5232 | −0.7992 | 0.072* | |
H1B2 | −3.2773 | −1.4986 | −0.7230 | 0.072* | |
C12C | −3.4992 (4) | −1.1612 (3) | −0.7633 (2) | 0.0730 (11) | |
H12G | −3.4688 | −1.2296 | −0.7383 | 0.109* | |
H12H | −3.4371 | −1.1251 | −0.7932 | 0.109* | |
H12I | −3.5721 | −1.1701 | −0.8152 | 0.109* | |
C8C | −3.4473 (3) | −1.0822 (3) | −0.0849 (3) | 0.0650 (10) | |
H8C | −3.4273 | −1.0656 | −0.0146 | 0.078* | |
C9A | −3.0919 (3) | −1.9717 (2) | −1.1001 (2) | 0.0542 (8) | |
H9A | −3.0677 | −2.0411 | −1.1104 | 0.065* | |
C8A | −3.1110 (3) | −1.9021 (2) | −1.1819 (2) | 0.0546 (8) | |
H8A | −3.1011 | −1.9240 | −1.2479 | 0.066* | |
C7B | −3.1653 (3) | −1.2924 (3) | −0.3887 (2) | 0.0566 (8) | |
C1C | −3.5392 (3) | −0.9836 (2) | −0.4629 (2) | 0.0525 (8) | |
H1C1 | −3.6210 | −0.9722 | −0.4469 | 0.063* | |
H1C2 | −3.5322 | −0.9412 | −0.5235 | 0.063* | |
C7C | −3.4997 (3) | −1.1785 (3) | −0.1159 (2) | 0.0527 (8) | |
C11B | −3.2578 (4) | −1.4694 (3) | −0.9776 (3) | 0.0897 (13) | |
H11A | −3.3090 | −1.4903 | −0.9288 | 0.134* | |
H11B | −3.1906 | −1.5185 | −0.9745 | 0.134* | |
H11C | −3.3060 | −1.4693 | −1.0465 | 0.134* | |
C1A | −3.1902 (4) | −1.9785 (2) | −0.8248 (2) | 0.0615 (9) | |
H1A1 | −3.2725 | −1.9876 | −0.8651 | 0.074* | |
H1A2 | −3.1854 | −2.0191 | −0.7613 | 0.074* | |
C11A | −3.2427 (4) | −1.9601 (3) | −0.5984 (3) | 0.0751 (10) | |
H11D | −3.1774 | −2.0116 | −0.5904 | 0.113* | |
H11E | −3.3043 | −1.9783 | −0.6574 | 0.113* | |
H11F | −3.2794 | −1.9595 | −0.5370 | 0.113* | |
C11C | −3.5908 (4) | −0.9984 (3) | −0.7056 (3) | 0.0877 (13) | |
H11G | −3.5308 | −0.9424 | −0.6989 | 0.131* | |
H11H | −3.6490 | −0.9846 | −0.6606 | 0.131* | |
H11I | −3.6335 | −1.0020 | −0.7763 | 0.131* | |
Cl1A | −3.16764 (10) | −1.70872 (8) | −1.26739 (6) | 0.0761 (3) |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1C | 0.0853 (6) | 0.0400 (4) | 0.0618 (5) | −0.0166 (4) | 0.0197 (4) | −0.0109 (4) |
S1B | 0.0957 (7) | 0.0386 (4) | 0.0702 (5) | 0.0110 (5) | 0.0320 (5) | 0.0116 (4) |
Cl1C | 0.0880 (7) | 0.1115 (8) | 0.0503 (5) | −0.0071 (6) | 0.0187 (5) | 0.0184 (5) |
S1A | 0.1128 (8) | 0.0386 (4) | 0.0568 (5) | 0.0172 (5) | 0.0133 (5) | −0.0039 (4) |
Cl1B | 0.0925 (7) | 0.1090 (8) | 0.0526 (5) | 0.0087 (6) | 0.0194 (5) | −0.0158 (5) |
C6B | 0.0514 (18) | 0.0576 (19) | 0.0489 (18) | 0.0055 (15) | 0.0125 (14) | 0.0025 (15) |
C4C | 0.0505 (17) | 0.0363 (16) | 0.0447 (16) | −0.0032 (13) | 0.0098 (14) | −0.0079 (13) |
O1C | 0.1068 (19) | 0.0324 (12) | 0.0515 (13) | −0.0062 (12) | 0.0155 (12) | −0.0053 (10) |
C6C | 0.0482 (17) | 0.0466 (17) | 0.0499 (17) | −0.0011 (14) | 0.0096 (14) | −0.0033 (15) |
O1A | 0.125 (2) | 0.0362 (12) | 0.0446 (12) | 0.0043 (12) | 0.0184 (13) | −0.0032 (10) |
N1 | 0.0678 (17) | 0.0477 (15) | 0.0473 (15) | 0.0021 (13) | 0.0064 (13) | 0.0003 (12) |
C5B | 0.0487 (17) | 0.0460 (17) | 0.0477 (17) | −0.0008 (13) | 0.0134 (14) | 0.0023 (14) |
C2C | 0.0479 (17) | 0.0335 (15) | 0.0431 (16) | −0.0022 (13) | 0.0061 (13) | −0.0032 (12) |
C5C | 0.0400 (15) | 0.0379 (15) | 0.0436 (16) | 0.0017 (13) | 0.0102 (13) | −0.0043 (13) |
C2B | 0.0581 (19) | 0.0429 (16) | 0.0461 (17) | 0.0021 (14) | 0.0181 (15) | 0.0002 (14) |
N2 | 0.0630 (16) | 0.0437 (13) | 0.0413 (14) | −0.0006 (12) | 0.0147 (12) | −0.0034 (11) |
C6A | 0.0568 (18) | 0.0449 (16) | 0.0393 (16) | 0.0040 (14) | 0.0087 (14) | −0.0046 (13) |
C3B | 0.0571 (19) | 0.0392 (16) | 0.0507 (18) | 0.0042 (14) | 0.0127 (15) | 0.0006 (14) |
N3 | 0.0687 (17) | 0.0522 (16) | 0.0400 (14) | −0.0030 (13) | 0.0052 (12) | −0.0006 (12) |
C5A | 0.0489 (16) | 0.0438 (16) | 0.0354 (14) | 0.0019 (13) | 0.0056 (13) | −0.0064 (12) |
C9B | 0.061 (2) | 0.059 (2) | 0.063 (2) | −0.0057 (17) | 0.0113 (17) | 0.0163 (18) |
C10C | 0.0439 (16) | 0.0463 (17) | 0.0468 (16) | 0.0012 (14) | 0.0098 (13) | −0.0093 (14) |
C3C | 0.0500 (18) | 0.0395 (16) | 0.0466 (17) | −0.0057 (13) | 0.0077 (14) | −0.0042 (13) |
C3A | 0.0538 (18) | 0.0386 (15) | 0.0415 (16) | 0.0007 (13) | 0.0062 (14) | −0.0019 (13) |
C4A | 0.063 (2) | 0.0355 (16) | 0.0392 (15) | 0.0063 (14) | 0.0040 (14) | −0.0059 (12) |
O1B | 0.152 (2) | 0.0398 (13) | 0.0529 (13) | 0.0160 (14) | 0.0292 (15) | 0.0045 (11) |
C2A | 0.0602 (18) | 0.0367 (15) | 0.0373 (15) | 0.0003 (14) | 0.0028 (13) | −0.0036 (12) |
C10B | 0.0513 (17) | 0.0404 (16) | 0.0595 (18) | −0.0021 (14) | 0.0181 (15) | 0.0091 (14) |
C8B | 0.058 (2) | 0.080 (3) | 0.0480 (19) | −0.0077 (18) | 0.0098 (16) | 0.0125 (17) |
C4B | 0.068 (2) | 0.0373 (17) | 0.0514 (18) | 0.0077 (14) | 0.0155 (15) | 0.0042 (13) |
C9C | 0.066 (2) | 0.056 (2) | 0.0575 (19) | −0.0087 (17) | 0.0102 (16) | −0.0185 (17) |
C12A | 0.080 (2) | 0.065 (2) | 0.0366 (16) | 0.0002 (18) | 0.0161 (16) | −0.0089 (15) |
C10A | 0.0505 (17) | 0.0430 (15) | 0.0480 (16) | 0.0014 (14) | 0.0040 (13) | −0.0084 (14) |
C12B | 0.080 (2) | 0.082 (2) | 0.0405 (17) | 0.008 (2) | 0.0133 (17) | 0.0061 (17) |
C7A | 0.0535 (18) | 0.0584 (19) | 0.0404 (15) | −0.0002 (15) | 0.0124 (14) | −0.0010 (14) |
C1B | 0.089 (3) | 0.0401 (16) | 0.0564 (19) | −0.0102 (16) | 0.0270 (18) | −0.0038 (14) |
C12C | 0.092 (3) | 0.084 (3) | 0.0468 (19) | −0.013 (2) | 0.0222 (19) | −0.0105 (18) |
C8C | 0.066 (2) | 0.089 (3) | 0.0405 (17) | 0.002 (2) | 0.0099 (16) | −0.0137 (17) |
C9A | 0.0592 (19) | 0.0485 (18) | 0.0567 (19) | 0.0008 (15) | 0.0152 (16) | −0.0180 (15) |
C8A | 0.0575 (19) | 0.064 (2) | 0.0455 (18) | −0.0075 (16) | 0.0185 (15) | −0.0153 (15) |
C7B | 0.0487 (18) | 0.078 (2) | 0.0445 (17) | −0.0041 (17) | 0.0123 (14) | −0.0021 (17) |
C1C | 0.069 (2) | 0.0399 (16) | 0.0499 (17) | 0.0041 (14) | 0.0140 (15) | −0.0014 (13) |
C7C | 0.0477 (18) | 0.068 (2) | 0.0431 (17) | 0.0013 (16) | 0.0102 (14) | 0.0022 (16) |
C11B | 0.131 (4) | 0.069 (3) | 0.061 (2) | −0.016 (2) | −0.005 (2) | −0.0070 (19) |
C1A | 0.102 (3) | 0.0403 (16) | 0.0446 (16) | −0.0135 (17) | 0.0193 (17) | −0.0056 (14) |
C11A | 0.101 (3) | 0.060 (2) | 0.076 (2) | −0.025 (2) | 0.047 (2) | −0.0089 (19) |
C11C | 0.123 (4) | 0.071 (3) | 0.057 (2) | 0.016 (2) | −0.014 (2) | 0.0074 (19) |
Cl1A | 0.1077 (7) | 0.0810 (6) | 0.0412 (4) | 0.0031 (6) | 0.0176 (4) | 0.0045 (4) |
S1C—C10C | 1.749 (3) | C10C—C9C | 1.399 (4) |
S1C—C1C | 1.801 (3) | C3C—H3C | 0.9300 |
S1B—C10B | 1.748 (3) | C3A—C2A | 1.367 (4) |
S1B—C1B | 1.808 (4) | C3A—H3A | 0.9300 |
Cl1C—C7C | 1.743 (3) | C4A—C2A | 1.434 (4) |
S1A—C10A | 1.752 (3) | O1B—C4B | 1.238 (3) |
S1A—C1A | 1.804 (3) | C2A—C1A | 1.505 (4) |
Cl1B—C7B | 1.744 (3) | C8B—C7B | 1.380 (4) |
C6B—C7B | 1.369 (4) | C8B—H8B | 0.9300 |
C6B—C5B | 1.389 (4) | C9C—C8C | 1.368 (4) |
C6B—H6B | 0.9300 | C9C—H9C | 0.9300 |
C4C—O1C | 1.236 (3) | C12A—H12A | 0.9600 |
C4C—C2C | 1.439 (4) | C12A—H12B | 0.9600 |
C4C—C5C | 1.503 (4) | C12A—H12C | 0.9600 |
C6C—C7C | 1.375 (4) | C10A—C9A | 1.395 (4) |
C6C—C5C | 1.386 (4) | C12B—H12D | 0.9600 |
C6C—H6C | 0.9300 | C12B—H12E | 0.9600 |
O1A—C4A | 1.235 (3) | C12B—H12F | 0.9600 |
N1—C3B | 1.320 (4) | C7A—C8A | 1.381 (4) |
N1—C11B | 1.445 (4) | C7A—Cl1A | 1.742 (3) |
N1—C12B | 1.458 (4) | C1B—H1B1 | 0.9700 |
C5B—C10B | 1.404 (4) | C1B—H1B2 | 0.9700 |
C5B—C4B | 1.503 (4) | C12C—H12G | 0.9600 |
C2C—C3C | 1.376 (4) | C12C—H12H | 0.9600 |
C2C—C1C | 1.500 (4) | C12C—H12I | 0.9600 |
C5C—C10C | 1.402 (4) | C8C—C7C | 1.373 (4) |
C2B—C3B | 1.365 (4) | C8C—H8C | 0.9300 |
C2B—C4B | 1.447 (4) | C9A—C8A | 1.371 (4) |
C2B—C1B | 1.501 (4) | C9A—H9A | 0.9300 |
N2—C3A | 1.321 (3) | C8A—H8A | 0.9300 |
N2—C11A | 1.454 (4) | C1C—H1C1 | 0.9700 |
N2—C12A | 1.462 (3) | C1C—H1C2 | 0.9700 |
C6A—C7A | 1.373 (4) | C11B—H11A | 0.9600 |
C6A—C5A | 1.386 (4) | C11B—H11B | 0.9600 |
C6A—H6A | 0.9300 | C11B—H11C | 0.9600 |
C3B—H3B | 0.9300 | C1A—H1A1 | 0.9700 |
N3—C3C | 1.324 (3) | C1A—H1A2 | 0.9700 |
N3—C11C | 1.450 (4) | C11A—H11D | 0.9600 |
N3—C12C | 1.460 (4) | C11A—H11E | 0.9600 |
C5A—C10A | 1.393 (4) | C11A—H11F | 0.9600 |
C5A—C4A | 1.513 (4) | C11C—H11G | 0.9600 |
C9B—C8B | 1.368 (4) | C11C—H11H | 0.9600 |
C9B—C10B | 1.394 (4) | C11C—H11I | 0.9600 |
C9B—H9B | 0.9300 | ||
C10C—S1C—C1C | 97.97 (14) | H12A—C12A—H12B | 109.5 |
C10B—S1B—C1B | 97.68 (15) | N2—C12A—H12C | 109.5 |
C10A—S1A—C1A | 97.13 (14) | H12A—C12A—H12C | 109.5 |
C7B—C6B—C5B | 120.7 (3) | H12B—C12A—H12C | 109.5 |
C7B—C6B—H6B | 119.6 | C5A—C10A—C9A | 120.0 (3) |
C5B—C6B—H6B | 119.6 | C5A—C10A—S1A | 120.7 (2) |
O1C—C4C—C2C | 123.7 (3) | C9A—C10A—S1A | 119.3 (2) |
O1C—C4C—C5C | 117.0 (3) | N1—C12B—H12D | 109.5 |
C2C—C4C—C5C | 119.3 (2) | N1—C12B—H12E | 109.5 |
C7C—C6C—C5C | 120.3 (3) | H12D—C12B—H12E | 109.5 |
C7C—C6C—H6C | 119.8 | N1—C12B—H12F | 109.5 |
C5C—C6C—H6C | 119.8 | H12D—C12B—H12F | 109.5 |
C3B—N1—C11B | 124.6 (3) | H12E—C12B—H12F | 109.5 |
C3B—N1—C12B | 120.4 (3) | C6A—C7A—C8A | 121.1 (3) |
C11B—N1—C12B | 115.0 (3) | C6A—C7A—Cl1A | 119.2 (2) |
C6B—C5B—C10B | 118.6 (3) | C8A—C7A—Cl1A | 119.7 (2) |
C6B—C5B—C4B | 118.0 (3) | C2B—C1B—S1B | 112.7 (2) |
C10B—C5B—C4B | 123.3 (3) | C2B—C1B—H1B1 | 109.1 |
C3C—C2C—C4C | 115.2 (2) | S1B—C1B—H1B1 | 109.1 |
C3C—C2C—C1C | 126.7 (3) | C2B—C1B—H1B2 | 109.1 |
C4C—C2C—C1C | 118.0 (2) | S1B—C1B—H1B2 | 109.1 |
C6C—C5C—C10C | 119.3 (3) | H1B1—C1B—H1B2 | 107.8 |
C6C—C5C—C4C | 117.8 (2) | N3—C12C—H12G | 109.5 |
C10C—C5C—C4C | 122.7 (2) | N3—C12C—H12H | 109.5 |
C3B—C2B—C4B | 115.5 (3) | H12G—C12C—H12H | 109.5 |
C3B—C2B—C1B | 126.1 (3) | N3—C12C—H12I | 109.5 |
C4B—C2B—C1B | 118.4 (3) | H12G—C12C—H12I | 109.5 |
C3A—N2—C11A | 125.8 (3) | H12H—C12C—H12I | 109.5 |
C3A—N2—C12A | 120.2 (2) | C9C—C8C—C7C | 119.5 (3) |
C11A—N2—C12A | 114.0 (2) | C9C—C8C—H8C | 120.2 |
C7A—C6A—C5A | 120.6 (3) | C7C—C8C—H8C | 120.2 |
C7A—C6A—H6A | 119.7 | C8A—C9A—C10A | 120.8 (3) |
C5A—C6A—H6A | 119.7 | C8A—C9A—H9A | 119.6 |
N1—C3B—C2B | 132.3 (3) | C10A—C9A—H9A | 119.6 |
N1—C3B—H3B | 113.9 | C9A—C8A—C7A | 118.9 (3) |
C2B—C3B—H3B | 113.9 | C9A—C8A—H8A | 120.5 |
C3C—N3—C11C | 124.4 (3) | C7A—C8A—H8A | 120.5 |
C3C—N3—C12C | 119.6 (3) | C6B—C7B—C8B | 120.9 (3) |
C11C—N3—C12C | 115.5 (3) | C6B—C7B—Cl1B | 119.2 (3) |
C6A—C5A—C10A | 118.6 (3) | C8B—C7B—Cl1B | 119.9 (3) |
C6A—C5A—C4A | 117.9 (2) | C2C—C1C—S1C | 112.4 (2) |
C10A—C5A—C4A | 123.4 (3) | C2C—C1C—H1C1 | 109.1 |
C8B—C9B—C10B | 120.8 (3) | S1C—C1C—H1C1 | 109.1 |
C8B—C9B—H9B | 119.6 | C2C—C1C—H1C2 | 109.1 |
C10B—C9B—H9B | 119.6 | S1C—C1C—H1C2 | 109.1 |
C9C—C10C—C5C | 118.7 (3) | H1C1—C1C—H1C2 | 107.9 |
C9C—C10C—S1C | 119.3 (2) | C8C—C7C—C6C | 120.9 (3) |
C5C—C10C—S1C | 121.9 (2) | C8C—C7C—Cl1C | 119.7 (2) |
N3—C3C—C2C | 132.0 (3) | C6C—C7C—Cl1C | 119.3 (3) |
N3—C3C—H3C | 114.0 | N1—C11B—H11A | 109.5 |
C2C—C3C—H3C | 114.0 | N1—C11B—H11B | 109.5 |
N2—C3A—C2A | 133.1 (3) | H11A—C11B—H11B | 109.5 |
N2—C3A—H3A | 113.4 | N1—C11B—H11C | 109.5 |
C2A—C3A—H3A | 113.4 | H11A—C11B—H11C | 109.5 |
O1A—C4A—C2A | 124.6 (3) | H11B—C11B—H11C | 109.5 |
O1A—C4A—C5A | 116.4 (3) | C2A—C1A—S1A | 112.9 (2) |
C2A—C4A—C5A | 119.0 (2) | C2A—C1A—H1A1 | 109.0 |
C3A—C2A—C4A | 115.7 (2) | S1A—C1A—H1A1 | 109.0 |
C3A—C2A—C1A | 126.1 (3) | C2A—C1A—H1A2 | 109.0 |
C4A—C2A—C1A | 118.2 (2) | S1A—C1A—H1A2 | 109.0 |
C9B—C10B—C5B | 119.5 (3) | H1A1—C1A—H1A2 | 107.8 |
C9B—C10B—S1B | 119.4 (2) | N2—C11A—H11D | 109.5 |
C5B—C10B—S1B | 120.9 (2) | N2—C11A—H11E | 109.5 |
C9B—C8B—C7B | 119.4 (3) | H11D—C11A—H11E | 109.5 |
C9B—C8B—H8B | 120.3 | N2—C11A—H11F | 109.5 |
C7B—C8B—H8B | 120.3 | H11D—C11A—H11F | 109.5 |
O1B—C4B—C2B | 123.6 (3) | H11E—C11A—H11F | 109.5 |
O1B—C4B—C5B | 117.0 (3) | N3—C11C—H11G | 109.5 |
C2B—C4B—C5B | 119.4 (3) | N3—C11C—H11H | 109.5 |
C8C—C9C—C10C | 121.1 (3) | H11G—C11C—H11H | 109.5 |
C8C—C9C—H9C | 119.5 | N3—C11C—H11I | 109.5 |
C10C—C9C—H9C | 119.5 | H11G—C11C—H11I | 109.5 |
N2—C12A—H12A | 109.5 | H11H—C11C—H11I | 109.5 |
N2—C12A—H12B | 109.5 | ||
C7B—C6B—C5B—C10B | 1.5 (4) | C4B—C5B—C10B—S1B | −1.3 (4) |
C7B—C6B—C5B—C4B | −174.7 (3) | C1B—S1B—C10B—C9B | 150.2 (3) |
O1C—C4C—C2C—C3C | −11.4 (4) | C1B—S1B—C10B—C5B | −33.6 (3) |
C5C—C4C—C2C—C3C | 167.4 (3) | C10B—C9B—C8B—C7B | 0.0 (5) |
O1C—C4C—C2C—C1C | 171.2 (3) | C3B—C2B—C4B—O1B | 6.2 (5) |
C5C—C4C—C2C—C1C | −10.0 (4) | C1B—C2B—C4B—O1B | −175.4 (3) |
C7C—C6C—C5C—C10C | −2.8 (4) | C3B—C2B—C4B—C5B | −172.9 (3) |
C7C—C6C—C5C—C4C | 171.9 (3) | C1B—C2B—C4B—C5B | 5.6 (4) |
O1C—C4C—C5C—C6C | −17.8 (4) | C6B—C5B—C4B—O1B | 18.5 (5) |
C2C—C4C—C5C—C6C | 163.3 (3) | C10B—C5B—C4B—O1B | −157.6 (3) |
O1C—C4C—C5C—C10C | 156.7 (3) | C6B—C5B—C4B—C2B | −162.5 (3) |
C2C—C4C—C5C—C10C | −22.2 (4) | C10B—C5B—C4B—C2B | 21.5 (5) |
C11B—N1—C3B—C2B | 10.6 (6) | C5C—C10C—C9C—C8C | −3.1 (5) |
C12B—N1—C3B—C2B | −172.9 (3) | S1C—C10C—C9C—C8C | 179.3 (3) |
C4B—C2B—C3B—N1 | −172.3 (3) | C6A—C5A—C10A—C9A | 1.4 (4) |
C1B—C2B—C3B—N1 | 9.4 (6) | C4A—C5A—C10A—C9A | −173.9 (3) |
C7A—C6A—C5A—C10A | −0.6 (4) | C6A—C5A—C10A—S1A | 177.9 (2) |
C7A—C6A—C5A—C4A | 175.0 (3) | C4A—C5A—C10A—S1A | 2.6 (4) |
C6C—C5C—C10C—C9C | 4.6 (4) | C1A—S1A—C10A—C5A | 33.8 (3) |
C4C—C5C—C10C—C9C | −169.9 (3) | C1A—S1A—C10A—C9A | −149.7 (3) |
C6C—C5C—C10C—S1C | −177.9 (2) | C5A—C6A—C7A—C8A | 0.0 (5) |
C4C—C5C—C10C—S1C | 7.7 (4) | C5A—C6A—C7A—Cl1A | −179.4 (2) |
C1C—S1C—C10C—C9C | −154.8 (2) | C3B—C2B—C1B—S1B | 131.1 (3) |
C1C—S1C—C10C—C5C | 27.7 (3) | C4B—C2B—C1B—S1B | −47.1 (4) |
C11C—N3—C3C—C2C | −14.4 (5) | C10B—S1B—C1B—C2B | 56.2 (3) |
C12C—N3—C3C—C2C | 174.5 (3) | C10C—C9C—C8C—C7C | −0.1 (5) |
C4C—C2C—C3C—N3 | 171.5 (3) | C5A—C10A—C9A—C8A | −1.6 (4) |
C1C—C2C—C3C—N3 | −11.3 (6) | S1A—C10A—C9A—C8A | −178.2 (2) |
C11A—N2—C3A—C2A | −6.0 (6) | C10A—C9A—C8A—C7A | 1.0 (5) |
C12A—N2—C3A—C2A | 174.9 (3) | C6A—C7A—C8A—C9A | −0.2 (5) |
C6A—C5A—C4A—O1A | −19.5 (4) | Cl1A—C7A—C8A—C9A | 179.2 (2) |
C10A—C5A—C4A—O1A | 155.8 (3) | C5B—C6B—C7B—C8B | −1.2 (5) |
C6A—C5A—C4A—C2A | 160.3 (3) | C5B—C6B—C7B—Cl1B | 178.4 (2) |
C10A—C5A—C4A—C2A | −24.4 (4) | C9B—C8B—C7B—C6B | 0.4 (5) |
N2—C3A—C2A—C4A | 173.4 (3) | C9B—C8B—C7B—Cl1B | −179.2 (2) |
N2—C3A—C2A—C1A | −7.3 (6) | C3C—C2C—C1C—S1C | −126.0 (3) |
O1A—C4A—C2A—C3A | −4.2 (5) | C4C—C2C—C1C—S1C | 51.1 (3) |
C5A—C4A—C2A—C3A | 176.0 (3) | C10C—S1C—C1C—C2C | −55.0 (2) |
O1A—C4A—C2A—C1A | 176.5 (3) | C9C—C8C—C7C—C6C | 2.0 (5) |
C5A—C4A—C2A—C1A | −3.2 (4) | C9C—C8C—C7C—Cl1C | −179.7 (2) |
C8B—C9B—C10B—C5B | 0.3 (5) | C5C—C6C—C7C—C8C | −0.5 (5) |
C8B—C9B—C10B—S1B | 176.6 (2) | C5C—C6C—C7C—Cl1C | −178.8 (2) |
C6B—C5B—C10B—C9B | −1.0 (4) | C3A—C2A—C1A—S1A | −132.5 (3) |
C4B—C5B—C10B—C9B | 175.0 (3) | C4A—C2A—C1A—S1A | 46.7 (4) |
C6B—C5B—C10B—S1B | −177.3 (2) | C10A—S1A—C1A—C2A | −57.1 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
C1a—H1a2···O1bi | 0.97 | 2.39 | 3.235 (4) | 144 |
C11a—H11d···O1bi | 0.96 | 2.63 | 3.290 (4) | 126 |
C1b—H1b2···O1a | 0.97 | 2.43 | 3.284 (1) | 147 |
C12a—H12b···O1b | 0.96 | 2.59 | 3.358 (4) | 137 |
Symmetry code: (i) x, y−1, z. |
D—H···A | D—H | H···A | D···A | D—H···A |
C1a—H1a2···O1bi | 0.97 | 2.393 | 3.235 (4) | 144 |
C11a—H11d···O1bi | 0.96 | 2.630 | 3.290 (4) | 126 |
C1b—H1b2···O1a | 0.97 | 2.430 | 3.284 (1) | 147 |
C12a—H12b···O1b | 0.96 | 2.590 | 3.358 (4) | 137 |
Symmetry code: (i) x, y−1, z. |
Acknowledgements
IMK is thankful to the University Grants Commission (UGC), India, for financial assistance.
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This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
Thiochromanones belong to an important class of oxygen containing heterocycles; many of their derivatives have been reported to possess important biological activities including antifungal activity (Wang et al.,2010). They also serve as the starting material for the synthesis of novel heterocyclic systems (Sosnovskikh, 2003).
There are three crystallographically independent molecules (A, B and C) in an asymmetric unit of the title compond (Fig. 1) wherein 6-chloro-thiochroman moiety is substituted with the dimethylaminomethylene group at C2. The dimethylamino group is oriented trans with respect to the oxo group of the thiochroman moiety which is described by the torsion angles N1—C3A—C2A –C4A, N2—C3B—C2B—C4B and N3—C3C—C2C—C4C [172.25 (3), -173.45 (2) and -171.53 (3)°] for the molecules A, B and C, respectively. The thiochroman rings in the three molecules are significantly puckered and adopt sofa conformations. A mean-planes calculation shows that the atoms S1A, S1B and S1C deviate from the mean planes of the remaining ring atoms by 0.7536 (1), -0.7360 (1) and -0.6753 (1) Å, respectively. The bond distances and angles in the three molecules of the title compound agree very well with the corresponding bond distances and angles reported in a closely related compound (Butt et al., 1988).
The crystal structure is stabilized by C—H···O type intermolecular interactions (Tab. 1 & Fig. 2); three such interactions form trifurcated bonds from three donors C1A, C11A and C12A to the same acceptor O1B, linking the molecules in a tape like structure. Whereas, another C—H···O interaction results in a one dimensional chain along the b-axis.