metal-organic compounds
Bis(1,3-benzothiazol-2-amine-κN3)silver(I) nitrate acetone solvate
aDepartment of Chemistry and Polymer Science, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa
*Correspondence e-mail: scron@sun.ac.za
In the title compound, [Ag(C7H6N2S)2]NO3·C3H6O, the AgI ion is coordinated to two benzothiazol-2-amine ligands via the thiazole N atoms in an approximately linear arrangement. The dihedral angle between the mean planes of the two 1,3-benzothiazole groups is 5.9 (3)°. Both amine groups on the ligands are oriented in the same direction and are engaged in N—H⋯O hydrogen bonding with the nitrate counter-anion, forming one-dimensional columns along the b-axis direction. Voids created by inefficient crystal packing are occupied by acetone solvent molecules which are disordered over two sites with occupancies of 0.563 (11) and 0.437 (11).
Related literature
For general background, see: de Jongh et al. (2008); Tewari et al. (1991). For related structures, see: Ellsworth et al. (2006); Fackler et al. (1992); Fitchett & Steel (2000); Hiraoka et al. (2003); Manzoni de Oliveira et al. (2007); Murthy & Murthy (1976); Zou et al. (2004).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2002); cell SAINT (Bruker, 2003); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: X-SEED (Atwood & Barbour, 2003; Barbour, 2001); software used to prepare material for publication: X-SEED.
Supporting information
10.1107/S1600536809004176/lh2768sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536809004176/lh2768Isup2.hkl
The formation of crystalline (I) occurred during the reaction of [Au(NO3)(PPh3)] (0.20 g, 0.38 mmol) with benzothiazol-2-amine (57 mg, 0.38 mmol) in acetone solution (20 ml). It could be traced to the utilization of AgNO3 and [AuCl(PPh3)] in the preceding preparation of the gold reagent.
To obtain a satisfactory geometry, the bond lengths in both orientations of the acetone molecule were restrained to target distances (C=O 1.2 Å and C—C 1.5 Å) and the molecules themselves restrained to be flat. The occupancies for the A and B orientation refined to 0.563 (11) and 0.437 (11), respectively.
All H atoms were positioned geometrically (C—H = 0.95, 0.99 and 0.98 Å for CH, CH2 and CH3 groups, respectively; N—H = 0.92 Å) and constrained to ride on their parent atoms; Uiso(H) values were set at 1.2 times Ueq(C,N) except for methyl groups where Uiso(H) was set at 1.5 times Ueq(C).
The largest residual electron density peak of 1.91 e Å-3 is located 0.68 Å from O4A of the acetone solvent molecule, the largest hole of –1.06 e Å-3 is located 0.54 Å from O4B.
Data collection: SMART (Bruker, 2002); cell
SAINT (Bruker, 2003); data reduction: SAINT (Bruker, 2003); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: X-SEED (Atwood & Barbour, 2003; Barbour, 2001); software used to prepare material for publication: X-SEED (Atwood & Barbour, 2003; Barbour, 2001).[Ag(C7H6N2S)2]NO3·C3H6O | F(000) = 1064 |
Mr = 528.35 | Dx = 1.773 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 4102 reflections |
a = 17.096 (4) Å | θ = 2.4–26.4° |
b = 5.8166 (12) Å | µ = 1.27 mm−1 |
c = 20.421 (4) Å | T = 100 K |
β = 102.867 (3)° | Needle, colourless |
V = 1979.8 (7) Å3 | 0.20 × 0.08 × 0.05 mm |
Z = 4 |
Bruker APEX CCD area-detector diffractometer | 4046 independent reflections |
Radiation source: fine-focus sealed tube | 3594 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.029 |
ω scans | θmax = 26.4°, θmin = 1.8° |
Absorption correction: multi-scan (SADABS; Bruker, 2002) | h = −16→21 |
Tmin = 0.786, Tmax = 0.940 | k = −7→7 |
10935 measured reflections | l = −22→25 |
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)] = 0.056 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.133 | H-atom parameters constrained |
S = 1.12 | w = 1/[σ2(Fo2) + (0.0594P)2 + 10.016P] where P = (Fo2 + 2Fc2)/3 |
4046 reflections | (Δ/σ)max = 0.001 |
259 parameters | Δρmax = 1.91 e Å−3 |
12 restraints | Δρmin = −1.06 e Å−3 |
[Ag(C7H6N2S)2]NO3·C3H6O | V = 1979.8 (7) Å3 |
Mr = 528.35 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 17.096 (4) Å | µ = 1.27 mm−1 |
b = 5.8166 (12) Å | T = 100 K |
c = 20.421 (4) Å | 0.20 × 0.08 × 0.05 mm |
β = 102.867 (3)° |
Bruker APEX CCD area-detector diffractometer | 4046 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2002) | 3594 reflections with I > 2σ(I) |
Tmin = 0.786, Tmax = 0.940 | Rint = 0.029 |
10935 measured reflections |
R[F2 > 2σ(F2)] = 0.056 | 12 restraints |
wR(F2) = 0.133 | H-atom parameters constrained |
S = 1.12 | w = 1/[σ2(Fo2) + (0.0594P)2 + 10.016P] where P = (Fo2 + 2Fc2)/3 |
4046 reflections | Δρmax = 1.91 e Å−3 |
259 parameters | Δρmin = −1.06 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 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 > 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. The acetone molecule is disordered around two positions with the C—O vectors pointing in roughly opposite directions. The bonds were restrained to target distances (1.2 Å for C═O and 1.5 Å for C—C) and the molecules were restrained to be flat. Due to the heavy disorder, anisotropic refinement of the molecule was not possible. |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
Ag1 | 0.98098 (2) | 0.87563 (7) | 0.191835 (19) | 0.02109 (14) | |
S11 | 0.98002 (9) | 0.2069 (2) | 0.06495 (7) | 0.0230 (3) | |
S21 | 0.94328 (10) | 1.5059 (3) | 0.32405 (7) | 0.0335 (4) | |
O1 | 0.7930 (2) | 0.7687 (7) | 0.1790 (2) | 0.0320 (9) | |
O2 | 0.8171 (3) | 0.9490 (8) | 0.0933 (2) | 0.0407 (11) | |
O3 | 0.7210 (3) | 1.0619 (9) | 0.1388 (3) | 0.0458 (12) | |
N1 | 0.7758 (3) | 0.9271 (8) | 0.1357 (2) | 0.0270 (10) | |
N12 | 0.8732 (3) | 0.4138 (8) | 0.1233 (2) | 0.0254 (10) | |
H2 | 0.8564 | 0.5233 | 0.1465 | 0.031* | |
H1 | 0.8424 | 0.2944 | 0.1094 | 0.031* | |
N13 | 0.9956 (3) | 0.5987 (7) | 0.1274 (2) | 0.0203 (9) | |
N22 | 0.8540 (3) | 1.1387 (10) | 0.2764 (3) | 0.0407 (14) | |
H3 | 0.8445 | 1.0060 | 0.2554 | 0.049* | |
H4 | 0.8165 | 1.2039 | 0.2934 | 0.049* | |
N23 | 0.9844 (3) | 1.1572 (8) | 0.2589 (2) | 0.0233 (10) | |
C12 | 0.9448 (3) | 0.4289 (9) | 0.1092 (2) | 0.0211 (11) | |
C14 | 1.0663 (3) | 0.5662 (9) | 0.1040 (2) | 0.0211 (11) | |
C15 | 1.0682 (3) | 0.3592 (9) | 0.0687 (2) | 0.0211 (11) | |
C16 | 1.1336 (4) | 0.3037 (10) | 0.0417 (3) | 0.0260 (12) | |
H16 | 1.1348 | 0.1632 | 0.0182 | 0.031* | |
C17 | 1.1968 (4) | 0.4568 (10) | 0.0498 (3) | 0.0291 (12) | |
H17 | 1.2419 | 0.4215 | 0.0316 | 0.035* | |
C18 | 1.1949 (4) | 0.6625 (10) | 0.0843 (3) | 0.0289 (12) | |
H18 | 1.2386 | 0.7664 | 0.0891 | 0.035* | |
C19 | 1.1302 (3) | 0.7179 (9) | 0.1119 (3) | 0.0234 (11) | |
H19 | 1.1297 | 0.8578 | 0.1358 | 0.028* | |
C22 | 0.9244 (3) | 1.2400 (10) | 0.2824 (3) | 0.0265 (12) | |
C24 | 1.0508 (3) | 1.3024 (9) | 0.2740 (3) | 0.0225 (11) | |
C25 | 1.0396 (4) | 1.5002 (10) | 0.3098 (3) | 0.0271 (12) | |
C26 | 1.1004 (4) | 1.6632 (11) | 0.3289 (3) | 0.0367 (15) | |
H26 | 1.0922 | 1.7971 | 0.3532 | 0.044* | |
C27 | 1.1727 (4) | 1.6241 (11) | 0.3114 (3) | 0.0412 (16) | |
H27 | 1.2151 | 1.7321 | 0.3239 | 0.049* | |
C28 | 1.1841 (4) | 1.4289 (11) | 0.2758 (3) | 0.0349 (14) | |
H28 | 1.2344 | 1.4051 | 0.2643 | 0.042* | |
C29 | 1.1238 (3) | 1.2679 (10) | 0.2568 (3) | 0.0257 (12) | |
H29 | 1.1324 | 1.1352 | 0.2322 | 0.031* | |
C1B | 1.3701 (7) | 0.437 (2) | −0.0513 (6) | 0.025 (3)* | 0.437 (11) |
H1B1 | 1.3823 | 0.2739 | −0.0424 | 0.037* | 0.437 (11) |
H1B2 | 1.3935 | 0.4888 | −0.0884 | 0.037* | 0.437 (11) |
H1B3 | 1.3118 | 0.4586 | −0.0634 | 0.037* | 0.437 (11) |
C2B | 1.4053 (8) | 0.5766 (19) | 0.0114 (6) | 0.048 (4)* | 0.437 (11) |
C3B | 1.3956 (8) | 0.8295 (19) | 0.0124 (7) | 0.031 (3)* | 0.437 (11) |
H3B1 | 1.4224 | 0.8892 | 0.0566 | 0.046* | 0.437 (11) |
H3B2 | 1.3384 | 0.8679 | 0.0034 | 0.046* | 0.437 (11) |
H3B3 | 1.4196 | 0.8989 | −0.0222 | 0.046* | 0.437 (11) |
O4B | 1.4376 (8) | 0.471 (2) | 0.0598 (6) | 0.065 (4)* | 0.437 (11) |
C1A | 1.3839 (5) | 0.3211 (14) | −0.0243 (4) | 0.015 (2)* | 0.563 (11) |
H1A1 | 1.3826 | 0.2663 | −0.0699 | 0.022* | 0.563 (11) |
H1A2 | 1.3316 | 0.2945 | −0.0135 | 0.022* | 0.563 (11) |
H1A3 | 1.4254 | 0.2376 | 0.0078 | 0.022* | 0.563 (11) |
C2A | 1.4039 (13) | 0.591 (3) | −0.0197 (10) | 0.158 (13)* | 0.563 (11) |
C3A | 1.3977 (5) | 0.7536 (14) | 0.0394 (4) | 0.0124 (19)* | 0.563 (11) |
H3A1 | 1.4029 | 0.9136 | 0.0260 | 0.019* | 0.563 (11) |
H3A2 | 1.4408 | 0.7175 | 0.0785 | 0.019* | 0.563 (11) |
H3A3 | 1.3456 | 0.7319 | 0.0511 | 0.019* | 0.563 (11) |
O4A | 1.437 (2) | 0.641 (5) | −0.0618 (14) | 0.287 (19)* | 0.563 (11) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Ag1 | 0.0244 (2) | 0.0184 (2) | 0.0223 (2) | −0.00038 (16) | 0.00910 (15) | −0.00495 (15) |
S11 | 0.0323 (7) | 0.0151 (6) | 0.0244 (7) | −0.0027 (5) | 0.0121 (6) | −0.0023 (5) |
S21 | 0.0368 (8) | 0.0349 (8) | 0.0288 (8) | 0.0101 (7) | 0.0077 (6) | −0.0126 (6) |
O1 | 0.034 (2) | 0.031 (2) | 0.034 (2) | 0.0076 (19) | 0.0140 (18) | 0.0020 (18) |
O2 | 0.061 (3) | 0.028 (2) | 0.044 (3) | −0.010 (2) | 0.034 (2) | −0.006 (2) |
O3 | 0.034 (3) | 0.044 (3) | 0.058 (3) | 0.012 (2) | 0.009 (2) | 0.000 (2) |
N1 | 0.024 (2) | 0.023 (2) | 0.035 (3) | −0.0036 (19) | 0.008 (2) | −0.004 (2) |
N12 | 0.029 (2) | 0.018 (2) | 0.032 (2) | −0.0029 (19) | 0.013 (2) | −0.0028 (19) |
N13 | 0.027 (2) | 0.015 (2) | 0.020 (2) | −0.0036 (18) | 0.0089 (18) | −0.0026 (17) |
N22 | 0.026 (3) | 0.055 (4) | 0.045 (3) | −0.005 (3) | 0.017 (2) | −0.023 (3) |
N23 | 0.022 (2) | 0.026 (2) | 0.022 (2) | 0.0037 (19) | 0.0043 (18) | −0.0069 (19) |
C12 | 0.033 (3) | 0.014 (2) | 0.018 (2) | 0.001 (2) | 0.010 (2) | 0.0057 (19) |
C14 | 0.030 (3) | 0.017 (2) | 0.018 (2) | 0.002 (2) | 0.007 (2) | 0.0011 (19) |
C15 | 0.031 (3) | 0.015 (2) | 0.019 (2) | −0.004 (2) | 0.008 (2) | 0.0008 (19) |
C16 | 0.038 (3) | 0.019 (3) | 0.023 (3) | 0.002 (2) | 0.013 (2) | 0.000 (2) |
C17 | 0.032 (3) | 0.029 (3) | 0.030 (3) | 0.003 (2) | 0.016 (2) | 0.002 (2) |
C18 | 0.032 (3) | 0.029 (3) | 0.029 (3) | −0.008 (2) | 0.012 (2) | −0.002 (2) |
C19 | 0.029 (3) | 0.020 (3) | 0.021 (3) | −0.003 (2) | 0.006 (2) | −0.005 (2) |
C22 | 0.024 (3) | 0.031 (3) | 0.025 (3) | 0.004 (2) | 0.006 (2) | −0.009 (2) |
C24 | 0.026 (3) | 0.021 (3) | 0.018 (2) | 0.004 (2) | 0.000 (2) | −0.001 (2) |
C25 | 0.031 (3) | 0.024 (3) | 0.023 (3) | 0.006 (2) | −0.002 (2) | −0.003 (2) |
C26 | 0.049 (4) | 0.024 (3) | 0.031 (3) | 0.002 (3) | −0.004 (3) | −0.003 (2) |
C27 | 0.039 (4) | 0.031 (3) | 0.046 (4) | −0.011 (3) | −0.007 (3) | 0.003 (3) |
C28 | 0.026 (3) | 0.031 (3) | 0.046 (4) | −0.002 (3) | 0.004 (3) | 0.006 (3) |
C29 | 0.026 (3) | 0.023 (3) | 0.026 (3) | 0.002 (2) | 0.002 (2) | 0.001 (2) |
Ag1—N13 | 2.130 (4) | C19—H19 | 0.9500 |
Ag1—N23 | 2.127 (4) | C24—C29 | 1.384 (8) |
Ag1—S11i | 3.2261 (15) | C24—C25 | 1.400 (7) |
S11—C12 | 1.758 (5) | C25—C26 | 1.397 (9) |
S11—C15 | 1.736 (5) | C26—C27 | 1.379 (10) |
S21—C22 | 1.759 (6) | C26—H26 | 0.9500 |
S21—C25 | 1.735 (6) | C27—C28 | 1.385 (9) |
O1—N1 | 1.264 (6) | C27—H27 | 0.9500 |
O2—N1 | 1.240 (6) | C28—C29 | 1.383 (8) |
O3—N1 | 1.233 (6) | C28—H28 | 0.9500 |
N12—C12 | 1.321 (7) | C29—H29 | 0.9500 |
N12—H2 | 0.8800 | C1B—C2B | 1.522 (9) |
N12—H1 | 0.8800 | C1B—H1B1 | 0.9800 |
N13—C12 | 1.313 (7) | C1B—H1B2 | 0.9800 |
N13—C14 | 1.406 (7) | C1B—H1B3 | 0.9800 |
N22—C22 | 1.322 (8) | C2B—O4B | 1.189 (7) |
N22—H3 | 0.8800 | C2B—C3B | 1.481 (9) |
N22—H4 | 0.8800 | C3B—H3B1 | 0.9800 |
N23—C22 | 1.318 (7) | C3B—H3B2 | 0.9800 |
N23—C24 | 1.394 (7) | C3B—H3B3 | 0.9800 |
C14—C19 | 1.387 (8) | C1A—C2A | 1.607 (18) |
C14—C15 | 1.408 (7) | C1A—H1A1 | 0.9800 |
C15—C16 | 1.390 (8) | C1A—H1A2 | 0.9800 |
C16—C17 | 1.381 (8) | C1A—H1A3 | 0.9800 |
C16—H16 | 0.9500 | C2A—O4A | 1.160 (19) |
C17—C18 | 1.393 (8) | C2A—C3A | 1.553 (18) |
C17—H17 | 0.9500 | C3A—H3A1 | 0.9800 |
C18—C19 | 1.385 (8) | C3A—H3A2 | 0.9800 |
C18—H18 | 0.9500 | C3A—H3A3 | 0.9800 |
N13—Ag1—N23 | 171.84 (17) | N23—C24—C25 | 114.4 (5) |
N23—Ag1—S11i | 92.96 (13) | C26—C25—C24 | 121.6 (6) |
N13—Ag1—S11i | 86.30 (12) | C26—C25—S21 | 128.0 (5) |
C15—S11—C12 | 89.8 (3) | C24—C25—S21 | 110.4 (4) |
C25—S21—C22 | 88.9 (3) | C27—C26—C25 | 118.0 (6) |
O1—N1—O2 | 118.8 (5) | C27—C26—H26 | 121.0 |
O1—N1—O3 | 119.3 (5) | C25—C26—H26 | 121.0 |
O2—N1—O2 | 121.8 (5) | C26—C27—C28 | 120.7 (6) |
C12—N12—H2 | 120.0 | C26—C27—H27 | 119.7 |
C12—N12—H1 | 120.0 | C28—C27—H27 | 119.7 |
H2—N12—H1 | 120.0 | C29—C28—C27 | 121.3 (6) |
C12—N13—C14 | 111.6 (4) | C29—C28—H28 | 119.4 |
C12—N13—Ag1 | 125.6 (4) | C27—C28—H28 | 119.4 |
C14—N13—Ag1 | 122.6 (3) | C28—C29—C24 | 119.2 (5) |
C22—N22—H3 | 120.0 | C28—C29—H29 | 120.4 |
C22—N22—H4 | 120.0 | C24—C29—H29 | 120.4 |
H3—N22—H4 | 120.0 | C2B—C1B—H1B1 | 109.5 |
C22—N23—C24 | 111.1 (5) | C2B—C1B—H1B2 | 109.5 |
C22—N23—Ag1 | 127.2 (4) | H1B1—C1B—H1B2 | 109.5 |
C24—N23—Ag1 | 120.9 (3) | C2B—C1B—H1B3 | 109.5 |
N13—C12—N12 | 125.1 (5) | H1B1—C1B—H1B3 | 109.5 |
N13—C12—S11 | 114.6 (4) | H1B2—C1B—H1B3 | 109.5 |
N12—C12—S11 | 120.2 (4) | O4B—C2B—C3B | 122.3 (12) |
C19—C14—N13 | 126.2 (5) | O4B—C2B—C1B | 116.5 (11) |
C19—C14—C15 | 119.7 (5) | C3B—C2B—C1B | 121.1 (11) |
N13—C14—C15 | 114.1 (5) | C2B—C3B—H3B1 | 109.5 |
C16—C15—C14 | 121.0 (5) | C2B—C3B—H3B2 | 109.5 |
C16—C15—S11 | 129.2 (4) | H3B1—C3B—H3B2 | 109.5 |
C14—C15—S11 | 109.9 (4) | C2B—C3B—H3B3 | 109.5 |
C17—C16—C15 | 118.7 (5) | H3B1—C3B—H3B3 | 109.5 |
C17—C16—H16 | 120.7 | H3B2—C3B—H3B3 | 109.5 |
C15—C16—H16 | 120.7 | C2A—C1A—H1A1 | 109.5 |
C16—C17—C18 | 120.5 (5) | C2A—C1A—H1A2 | 109.5 |
C16—C17—H17 | 119.8 | H1A1—C1A—H1A2 | 109.5 |
C18—C17—H17 | 119.8 | C2A—C1A—H1A3 | 109.5 |
C19—C18—C17 | 121.1 (5) | H1A1—C1A—H1A3 | 109.5 |
C19—C18—H18 | 119.4 | H1A2—C1A—H1A3 | 109.5 |
C17—C18—H18 | 119.4 | O4A—C2A—C3A | 124 (2) |
C18—C19—C14 | 119.0 (5) | O4A—C2A—C1A | 109 (2) |
C18—C19—H19 | 120.5 | C3A—C2A—C1A | 126.1 (16) |
C14—C19—H19 | 120.5 | C2A—C3A—H3A1 | 109.5 |
N23—C22—N22 | 124.8 (5) | C2A—C3A—H3A2 | 109.5 |
N23—C22—S21 | 115.1 (4) | H3A1—C3A—H3A2 | 109.5 |
N22—C22—S21 | 120.1 (4) | C2A—C3A—H3A3 | 109.5 |
C29—C24—N23 | 126.3 (5) | H3A1—C3A—H3A3 | 109.5 |
C29—C24—C25 | 119.2 (5) | H3A2—C3A—H3A3 | 109.5 |
S11i—Ag1—N13—C12 | −117.6 (4) | C15—C14—C19—C18 | 0.2 (8) |
S11i—Ag1—N13—C14 | 68.7 (4) | C24—N23—C22—N22 | −179.3 (6) |
S11i—Ag1—N23—C22 | 103.0 (5) | Ag1—N23—C22—N22 | 11.1 (9) |
S11i—Ag1—N23—C24 | −65.7 (4) | C24—N23—C22—S21 | 1.0 (6) |
C14—N13—C12—N12 | −179.2 (5) | Ag1—N23—C22—S21 | −168.6 (3) |
Ag1—N13—C12—N12 | 6.4 (7) | C25—S21—C22—N23 | −1.2 (5) |
C14—N13—C12—S11 | 2.5 (6) | C25—S21—C22—N22 | 179.1 (5) |
C15—S11—C12—N13 | −2.1 (4) | C22—N23—C24—C29 | −180.0 (5) |
C15—S11—C12—N12 | 179.6 (5) | Ag1—N23—C24—C29 | −9.6 (7) |
C12—N13—C14—C19 | 177.0 (5) | C22—N23—C24—C25 | −0.2 (7) |
Ag1—N13—C14—C19 | −8.5 (7) | Ag1—N23—C24—C25 | 170.2 (4) |
C12—N13—C14—C15 | −1.7 (6) | C29—C24—C25—C26 | −0.2 (8) |
Ag1—N13—C14—C15 | 172.8 (3) | N23—C24—C25—C26 | 179.9 (5) |
C19—C14—C15—C16 | 0.4 (8) | C29—C24—C25—S21 | 179.1 (4) |
N13—C14—C15—C16 | 179.2 (5) | N23—C24—C25—S21 | −0.7 (6) |
C19—C14—C15—S11 | −178.6 (4) | C22—S21—C25—C26 | −179.7 (6) |
N13—C14—C15—S11 | 0.2 (6) | C22—S21—C25—C24 | 1.0 (4) |
C12—S11—C15—C16 | −177.9 (5) | C24—C25—C26—C27 | −0.1 (9) |
C12—S11—C15—C14 | 1.0 (4) | S21—C25—C26—C27 | −179.3 (5) |
C14—C15—C16—C17 | −0.6 (8) | C25—C26—C27—C28 | 0.2 (9) |
S11—C15—C16—C17 | 178.2 (4) | C26—C27—C28—C29 | 0.0 (10) |
C15—C16—C17—C18 | 0.1 (8) | C27—C28—C29—C24 | −0.3 (9) |
C16—C17—C18—C19 | 0.5 (9) | N23—C24—C29—C28 | −179.8 (5) |
C17—C18—C19—C14 | −0.7 (9) | C25—C24—C29—C28 | 0.5 (8) |
N13—C14—C19—C18 | −178.4 (5) |
Symmetry code: (i) x, y+1, z. |
D—H···A | D—H | H···A | D···A | D—H···A |
N12—H2···O1 | 0.88 | 1.99 | 2.851 (6) | 165 |
N12—H1···O2ii | 0.88 | 2.07 | 2.889 (6) | 155 |
N22—H3···O1 | 0.88 | 2.12 | 2.959 (7) | 158 |
N22—H4···O1iii | 0.88 | 2.11 | 2.955 (6) | 162 |
Symmetry codes: (ii) x, y−1, z; (iii) −x+3/2, y+1/2, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | [Ag(C7H6N2S)2]NO3·C3H6O |
Mr | 528.35 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 100 |
a, b, c (Å) | 17.096 (4), 5.8166 (12), 20.421 (4) |
β (°) | 102.867 (3) |
V (Å3) | 1979.8 (7) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 1.27 |
Crystal size (mm) | 0.20 × 0.08 × 0.05 |
Data collection | |
Diffractometer | Bruker APEX CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2002) |
Tmin, Tmax | 0.786, 0.940 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 10935, 4046, 3594 |
Rint | 0.029 |
(sin θ/λ)max (Å−1) | 0.626 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.056, 0.133, 1.12 |
No. of reflections | 4046 |
No. of parameters | 259 |
No. of restraints | 12 |
H-atom treatment | H-atom parameters constrained |
w = 1/[σ2(Fo2) + (0.0594P)2 + 10.016P] where P = (Fo2 + 2Fc2)/3 | |
Δρmax, Δρmin (e Å−3) | 1.91, −1.06 |
Computer programs: SMART (Bruker, 2002), SAINT (Bruker, 2003), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), X-SEED (Atwood & Barbour, 2003; Barbour, 2001).
Ag1—N13 | 2.130 (4) | O1—N1 | 1.264 (6) |
Ag1—N23 | 2.127 (4) | O2—N1 | 1.240 (6) |
Ag1—S11i | 3.2261 (15) | O3—N1 | 1.233 (6) |
N13—Ag1—N23 | 171.84 (17) | O1—N1—O3 | 119.3 (5) |
O1—N1—O2 | 118.8 (5) | O2—N1—O2 | 121.8 (5) |
Symmetry code: (i) x, y+1, z. |
D—H···A | D—H | H···A | D···A | D—H···A |
N12—H2···O1 | 0.88 | 1.99 | 2.851 (6) | 164.8 |
N12—H1···O2ii | 0.88 | 2.07 | 2.889 (6) | 155.2 |
N22—H3···O1 | 0.88 | 2.12 | 2.959 (7) | 158.3 |
N22—H4···O1iii | 0.88 | 2.11 | 2.955 (6) | 162.2 |
Symmetry codes: (ii) x, y−1, z; (iii) −x+3/2, y+1/2, −z+1/2. |
Acknowledgements
We thank the National Research Foundation (NRF) of South Africa for financial support.
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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.
The cation in the title compound (I) (Fig. 1) is crystallographically independent and consists of two benzothiazol-2-amine ligands coordinating to an AgI ion with their thiazole imine nitrogen atoms, thus furnishing an essentially linear geometry around the metal. This is in contrast to a postulation of amino-N coordination by Tewari et al. (1991) which was based on infrared evidence. However, hydrogen bonding may have interfered in the assignment of bands. Their conclusions that nitrate is not bonded to silver and the presence of Ag···S contacts have now been verified for the structure of (I).
The nitrate counter-anion in (I) does not interact with the metal which is reflected in the close to linear N—Ag—N angle of 171.84 (17)°. Similar molecular structures wherein the AgI ion is coordinated to two thiazole imine nitrogen atoms and interacts with nitrate, have markedly bent angles of 143.2 (2) and 146.1 (2)° (Fitchett & Steel, 2000), 136.05 (17) and 130.78 (15)° (Zou et al., 2004). Perchlorate shows the same effect with an angle of 144.3 (6)° (Murthy & Murthy, 1976). Essentially linear angles of 173.5 (2), 176.1 (2) and 176.8 (2)° are, however, observed in a trinuclear silver complex (Hiraoka et al., 2003) even though trifluoromethanesulfonate or methanol additionally coordinate to the silver atoms. The Ag—N bond lengths of 2.148 (6)–2.188 (6) Å in this complex are comparable to (I) [2.130 (4) and 2.127 (4) Å], as are the appropriate bond distances in the undisturbed (i.e. the Ag centre is only coordinated by thiazole ligands and the anion does not form part of the coordination sphere) silver perchlorate complexes of bis(benzothiazol-2-ylsulfanyl)methane and 1,4-bis(benzothiazol-2-ylsulfanyl)butane reported by Zou et al. (2004) [2.136 (4) and 2.147 (4) Å in the former and 2.136 (5) Å in the latter complex].
The planes of the two 1,3-benzothiazole groups in (I) lie at an angle of 5.9 (3)° which prevents crowding between H19 and H29 that would otherwise ensue in a flat cation. A short contact between Ag1 and S11i [3.2261 (15) Å, symmetry code: (i) = x, y + 1, z] can be observed which is shorter than the sum of the van der Waals radii of the concerned atoms. Such Ag···S interactions involving thiazole rings have been observed before with distances of 3.306 Å (Ellsworth et al., 2006), 3.336 Å (Fackler Jr et al., 1992), 3.204 Å (Manzoni de Oliveira et al., 2007) and 3.543 Å (Zou et al., 2004); except for the longer distance in the last example they are comparable to (I).
The nitrate counteranion plays a crucial role in governing the crystal structure of (I). The amino groups of the cations engage in hydrogen bonds to the nitrate anion and form polar one-dimensional hydrogen bonding domains ordered around the crystallographical 21 screw axes. The apolar 1,3-benzothiazole "ends" of different columns face each other as well as the co-crystallized acetone solvent molecules (Fig. 2). The hydrogen bonding network (Fig. 1) emanates from the two amino groups of the cation which chelate O1 of the nitrate anion as well as hydrogen bonding to two other nitrates, one from the same side of the chain (via O2, related by a translation in b) and one from the other side (via O1, related by a 21 screw operation). O1 accepts three hydrogen bonds and O2 is involved in a single hydrogen bond. O3 does not exhibit hydrogen bonding which might be a cause of its larger thermal ellipsoid due to less restriction in movement.
The only possible π···π-interaction between the heteroaromatic rings is found in the 1,3-benzothiazole containing S11 and its counterpart generated by a centre of inversion [symmetry code: (v) = –x+2, –y+1, –z] with centroid–centroid distances of 3.89 Å.
The acetone solvent is highly disordered and occupies two sites in a 0.56:0.44 ratio. The carbonyl groups roughly point in opposite directions. Additional electron density peaks around the solvent as well as very high Ueq values suggest a high mobility of the acetone molecule.