metal-organic compounds
catena-poly[[diaqua(4,5-diazafluoren-9-one-κ2N,N′)cadmium]-μ-2-hydroxy-5-sulfonatobenzoato-κ3O1,O1′:O5]
ofaSchool of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, People's Republic of China
*Correspondence e-mail: jxlzfeng@163.com
In the polymeric title compound, [Cd(C7H4O6S)(C11H6N2O)(H2O)2]n, the Cd2+ atom is seven-coordinated by two water O atoms, by three O atoms from two 2-hydroxy-5-sulfonatobenzoate (Hssal2−) ligands and by two N atoms from a 4,5-diazafluoren-9-one (Dafo) ligand in a distorted pentagonal–bipyramidal geometry. The Cd2+ atoms are monodentately coordinated by the sulfonate group of one Hssal2− ligand and bidentately coordinated by the carboxylate group of another Hssal2− ligand, generating zigzag chains running parallel to [010]. The chains are linked by O—H⋯O hydrogen bonds into a three-dimensional architecture.
Keywords: crystal structure; one-dimensional coordination polymer; 4,5-diazafluoren-9-one; 2-hydroxy-5-sulfonatobenzoate; cadmium complex; hydrogen bonding.
CCDC reference: 1030993
1. Related literature
For information on compounds with metal–organic framework structures, see: Song et al. (2007); Yan et al. (2009). For related Cd2+ compounds, see: Sun et al. (2010).
2. Experimental
2.1. Crystal data
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Data collection: APEX2 (Bruker, 2004); cell SAINT (Bruker, 2004); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supporting information
CCDC reference: 1030993
10.1107/S1600536814023472/im2455sup1.cif
contains datablocks I, New_Global_Publ_Block. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536814023472/im2455Isup2.hkl
A mixture of Cd(NO3)2 × 4 H2O (1.00 mmol, 0.3085 g), 5-sulfosalicylic acid (H3ssal) dihydrate (1 mmol, 0.2542 g), 4,5-diazafluoren-9-one (Dafo) (1 mmol, 0.1822 g), NaOH (1.00 mmol, 0.04 g) and H2O (10.0 ml) was heated in a 23 ml Teflon-lined stainless steel reactor at 443 K for 72 h. The yellow plate-like crystals were filtered and washed with water and acetone. Yield: 8% based on Cd.
H atoms attached to C atoms were included at calculated positions and treated as riding atoms [C—H = 0.93 Å and Uiso(H) = 1.2 Ueq(C)]. Water H atoms were found in a difference map, relocated in idealized positions (O—H = 0.85 Å) and refined as riding atoms with Uiso(H) = 1.5 Ueq(O). The highest density peak is located 0.85 Å from atom Cd and the deepest hole is located 0.69 Å from atom S.
Data collection: APEX2 (Bruker, 2004); cell
SAINT (Bruker, 2004); data reduction: SAINT (Bruker, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).Fig. 1. The asymmetric unit of the title compounds showing displacement ellipsoids at the 30% probability level and H atoms as small spheres of arbitrary radii. Symmetry code: (i) 1 - x, 0.5 + y, 2 - z. Fig. 2. The one-dimensional zigzag-like chain structure of the title compound. H atoms are omitted for clarity. |
[Cd(C7H4O6S)(C11H6N2O)(H2O)2] | F(000) = 544 |
Mr = 546.77 | Dx = 1.980 Mg m−3 |
Monoclinic, P21 | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: P 2yb | Cell parameters from 387 reflections |
a = 7.6233 (6) Å | θ = 2.1–27.5° |
b = 12.8461 (10) Å | µ = 1.37 mm−1 |
c = 9.4625 (7) Å | T = 296 K |
β = 98.155 (1)° | Plate, yellow |
V = 917.29 (12) Å3 | 0.35 × 0.32 × 0.20 mm |
Z = 2 |
Bruker SMART APEXII CCD area-detector diffractometer | 3545 independent reflections |
Radiation source: fine-focus sealed tube | 3469 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.010 |
ϕ and ω scans | θmax = 26.7°, θmin = 2.2° |
Absorption correction: multi-scan (SADABS; Sheldrick, 2003) | h = −9→8 |
Tmin = 0.677, Tmax = 0.823 | k = −16→16 |
5158 measured reflections | l = −9→11 |
Refinement on F2 | Hydrogen site location: inferred from neighbouring sites |
Least-squares matrix: full | H-atom parameters constrained |
R[F2 > 2σ(F2)] = 0.015 | w = 1/[σ2(Fo2) + (0.0198P)2] where P = (Fo2 + 2Fc2)/3 |
wR(F2) = 0.037 | (Δ/σ)max = 0.010 |
S = 1.02 | Δρmax = 0.32 e Å−3 |
3545 reflections | Δρmin = −0.23 e Å−3 |
281 parameters | Extinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
1 restraint | Extinction coefficient: 0.0055 (5) |
Primary atom site location: structure-invariant direct methods | Absolute structure: Flack (1983), 1559 Friedel pairs |
Secondary atom site location: difference Fourier map | Absolute structure parameter: 0.040 (13) |
[Cd(C7H4O6S)(C11H6N2O)(H2O)2] | V = 917.29 (12) Å3 |
Mr = 546.77 | Z = 2 |
Monoclinic, P21 | Mo Kα radiation |
a = 7.6233 (6) Å | µ = 1.37 mm−1 |
b = 12.8461 (10) Å | T = 296 K |
c = 9.4625 (7) Å | 0.35 × 0.32 × 0.20 mm |
β = 98.155 (1)° |
Bruker SMART APEXII CCD area-detector diffractometer | 3545 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 2003) | 3469 reflections with I > 2σ(I) |
Tmin = 0.677, Tmax = 0.823 | Rint = 0.010 |
5158 measured reflections |
R[F2 > 2σ(F2)] = 0.015 | H-atom parameters constrained |
wR(F2) = 0.037 | Δρmax = 0.32 e Å−3 |
S = 1.02 | Δρmin = −0.23 e Å−3 |
3545 reflections | Absolute structure: Flack (1983), 1559 Friedel pairs |
281 parameters | Absolute structure parameter: 0.040 (13) |
1 restraint |
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 | ||
C1 | 0.7119 (3) | 0.11149 (18) | 0.4387 (2) | 0.0325 (5) | |
H1 | 0.6659 | 0.0842 | 0.5167 | 0.039* | |
C2 | 0.7228 (3) | 0.04706 (19) | 0.3233 (3) | 0.0369 (5) | |
H2 | 0.6851 | −0.0217 | 0.3254 | 0.044* | |
C3 | 0.7902 (3) | 0.08485 (19) | 0.2036 (3) | 0.0377 (5) | |
H3 | 0.7993 | 0.0427 | 0.1251 | 0.045* | |
C4 | 0.8423 (3) | 0.18736 (18) | 0.2071 (2) | 0.0305 (5) | |
C5 | 0.9171 (3) | 0.2583 (2) | 0.1039 (3) | 0.0349 (5) | |
C6 | 0.9390 (2) | 0.3622 (3) | 0.17581 (19) | 0.0327 (4) | |
C7 | 1.0001 (3) | 0.4579 (2) | 0.1391 (3) | 0.0412 (6) | |
H7 | 1.0365 | 0.4693 | 0.0506 | 0.049* | |
C8 | 1.0049 (3) | 0.5374 (2) | 0.2407 (3) | 0.0434 (6) | |
H8 | 1.0489 | 0.6026 | 0.2215 | 0.052* | |
C9 | 0.9445 (3) | 0.51923 (17) | 0.3698 (3) | 0.0355 (5) | |
H9 | 0.9428 | 0.5746 | 0.4329 | 0.043* | |
C10 | 0.8864 (2) | 0.3516 (2) | 0.3100 (2) | 0.0280 (4) | |
C11 | 0.8275 (3) | 0.24562 (16) | 0.3282 (2) | 0.0282 (4) | |
C12 | 0.4313 (3) | 0.19306 (15) | 0.9233 (2) | 0.0248 (4) | |
C13 | 0.3771 (3) | 0.11221 (16) | 1.0031 (2) | 0.0261 (4) | |
H13 | 0.3678 | 0.0454 | 0.9650 | 0.031* | |
C14 | 0.3361 (3) | 0.12964 (15) | 1.1403 (2) | 0.0241 (4) | |
C15 | 0.3489 (3) | 0.23148 (16) | 1.1954 (2) | 0.0262 (4) | |
C16 | 0.4067 (3) | 0.31269 (17) | 1.1150 (2) | 0.0308 (5) | |
H16 | 0.4169 | 0.3797 | 1.1525 | 0.037* | |
C17 | 0.4488 (3) | 0.29364 (16) | 0.9797 (2) | 0.0291 (5) | |
H17 | 0.4885 | 0.3475 | 0.9267 | 0.035* | |
C18 | 0.2836 (3) | 0.04158 (16) | 1.2294 (2) | 0.0277 (4) | |
Cd1 | 0.760273 (16) | 0.360333 (13) | 0.613628 (12) | 0.02682 (5) | |
N1 | 0.7645 (2) | 0.21201 (14) | 0.44437 (19) | 0.0281 (4) | |
N2 | 0.8881 (2) | 0.42577 (14) | 0.4086 (2) | 0.0301 (4) | |
O1 | 0.9547 (2) | 0.23396 (15) | −0.01156 (18) | 0.0460 (4) | |
O2 | 0.2854 (2) | −0.04920 (12) | 1.18426 (18) | 0.0392 (4) | |
O3 | 0.2427 (2) | 0.06334 (13) | 1.35128 (17) | 0.0377 (4) | |
O4 | 0.3065 (2) | 0.25331 (12) | 1.32612 (16) | 0.0344 (4) | |
H4 | 0.2813 | 0.1972 | 1.3664 | 0.052* | |
O5 | 0.3267 (2) | 0.22249 (15) | 0.65477 (18) | 0.0418 (4) | |
O6 | 0.4806 (2) | 0.06102 (12) | 0.72661 (17) | 0.0394 (4) | |
O7 | 0.6409 (2) | 0.22356 (13) | 0.73467 (17) | 0.0359 (4) | |
O8 | 0.4984 (2) | 0.40770 (12) | 0.48081 (17) | 0.0338 (3) | |
O9 | 1.0370 (2) | 0.32540 (13) | 0.73495 (18) | 0.0411 (4) | |
S1 | 0.47242 (7) | 0.17302 (4) | 0.74579 (5) | 0.02593 (11) | |
H8B | 0.4229 | 0.3687 | 0.4315 | 0.039* | |
H8A | 0.5159 | 0.4564 | 0.4233 | 0.039* | |
H9B | 1.0268 | 0.3091 | 0.8205 | 0.039* | |
H9A | 1.1283 | 0.3117 | 0.6959 | 0.039* |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0372 (12) | 0.0294 (11) | 0.0329 (12) | 0.0010 (9) | 0.0118 (9) | 0.0016 (9) |
C2 | 0.0391 (13) | 0.0270 (11) | 0.0451 (15) | −0.0021 (9) | 0.0082 (10) | −0.0056 (11) |
C3 | 0.0377 (12) | 0.0425 (13) | 0.0347 (13) | 0.0024 (10) | 0.0114 (10) | −0.0125 (10) |
C4 | 0.0337 (11) | 0.0356 (12) | 0.0240 (11) | 0.0049 (9) | 0.0107 (9) | −0.0025 (9) |
C5 | 0.0299 (13) | 0.0481 (14) | 0.0279 (13) | 0.0057 (10) | 0.0082 (10) | 0.0006 (10) |
C6 | 0.0330 (9) | 0.0392 (10) | 0.0272 (9) | 0.0066 (15) | 0.0087 (7) | 0.0022 (14) |
C7 | 0.0398 (14) | 0.0481 (15) | 0.0389 (15) | 0.0024 (12) | 0.0163 (11) | 0.0146 (11) |
C8 | 0.0424 (13) | 0.0349 (13) | 0.0545 (16) | −0.0024 (10) | 0.0125 (11) | 0.0125 (11) |
C9 | 0.0366 (12) | 0.0270 (11) | 0.0434 (14) | 0.0001 (9) | 0.0071 (10) | 0.0021 (10) |
C10 | 0.0302 (9) | 0.0285 (11) | 0.0262 (9) | 0.0045 (11) | 0.0072 (7) | 0.0026 (11) |
C11 | 0.0319 (11) | 0.0293 (11) | 0.0241 (11) | 0.0025 (8) | 0.0067 (9) | −0.0001 (9) |
C12 | 0.0305 (10) | 0.0242 (10) | 0.0207 (10) | −0.0005 (8) | 0.0074 (8) | −0.0005 (8) |
C13 | 0.0307 (10) | 0.0236 (9) | 0.0240 (10) | −0.0010 (8) | 0.0036 (8) | 0.0008 (8) |
C14 | 0.0245 (10) | 0.0249 (10) | 0.0228 (10) | −0.0005 (7) | 0.0031 (8) | 0.0026 (8) |
C15 | 0.0296 (10) | 0.0283 (10) | 0.0207 (10) | 0.0004 (8) | 0.0029 (8) | −0.0002 (8) |
C16 | 0.0447 (12) | 0.0220 (9) | 0.0269 (11) | −0.0046 (9) | 0.0090 (9) | −0.0044 (9) |
C17 | 0.0397 (12) | 0.0227 (10) | 0.0256 (11) | −0.0037 (8) | 0.0071 (9) | 0.0032 (8) |
C18 | 0.0285 (11) | 0.0284 (11) | 0.0266 (11) | 0.0005 (9) | 0.0053 (8) | 0.0068 (9) |
Cd1 | 0.03529 (8) | 0.02431 (7) | 0.02215 (7) | 0.00261 (8) | 0.00855 (5) | −0.00201 (7) |
N1 | 0.0358 (10) | 0.0268 (9) | 0.0236 (9) | −0.0001 (7) | 0.0108 (7) | 0.0002 (7) |
N2 | 0.0338 (10) | 0.0278 (9) | 0.0300 (10) | 0.0024 (7) | 0.0088 (8) | 0.0016 (7) |
O1 | 0.0552 (11) | 0.0605 (11) | 0.0258 (9) | 0.0062 (9) | 0.0179 (8) | −0.0043 (8) |
O2 | 0.0571 (11) | 0.0267 (8) | 0.0356 (10) | −0.0041 (7) | 0.0131 (8) | 0.0045 (7) |
O3 | 0.0517 (10) | 0.0372 (9) | 0.0275 (8) | −0.0024 (7) | 0.0170 (7) | 0.0068 (7) |
O4 | 0.0516 (10) | 0.0311 (8) | 0.0230 (8) | −0.0039 (7) | 0.0136 (7) | −0.0024 (6) |
O5 | 0.0477 (10) | 0.0529 (11) | 0.0247 (9) | 0.0116 (9) | 0.0054 (7) | 0.0019 (8) |
O6 | 0.0644 (11) | 0.0250 (8) | 0.0316 (9) | −0.0041 (7) | 0.0169 (8) | −0.0068 (6) |
O7 | 0.0396 (9) | 0.0381 (9) | 0.0330 (9) | −0.0065 (7) | 0.0155 (7) | −0.0005 (7) |
O8 | 0.0406 (8) | 0.0270 (7) | 0.0325 (9) | −0.0018 (7) | 0.0012 (7) | 0.0018 (7) |
O9 | 0.0377 (9) | 0.0494 (11) | 0.0376 (9) | 0.0065 (7) | 0.0103 (7) | 0.0094 (7) |
S1 | 0.0351 (3) | 0.0234 (2) | 0.0208 (2) | −0.0010 (2) | 0.0093 (2) | −0.00040 (19) |
C1—N1 | 1.351 (3) | C14—C15 | 1.407 (3) |
C1—C2 | 1.382 (3) | C14—C18 | 1.499 (3) |
C1—H1 | 0.9300 | C15—O4 | 1.351 (3) |
C2—C3 | 1.395 (4) | C15—C16 | 1.399 (3) |
C2—H2 | 0.9300 | C16—C17 | 1.385 (3) |
C3—C4 | 1.375 (3) | C16—H16 | 0.9300 |
C3—H3 | 0.9300 | C17—H17 | 0.9300 |
C4—C11 | 1.386 (3) | C18—O2 | 1.243 (3) |
C4—C5 | 1.506 (3) | C18—O3 | 1.268 (3) |
C5—O1 | 1.209 (3) | Cd1—O8 | 2.2857 (16) |
C5—C6 | 1.497 (4) | Cd1—O9 | 2.2984 (16) |
C6—C7 | 1.376 (4) | Cd1—O2i | 2.3061 (16) |
C6—C10 | 1.391 (3) | Cd1—O7 | 2.3501 (16) |
C7—C8 | 1.399 (4) | Cd1—N2 | 2.4404 (19) |
C7—H7 | 0.9300 | Cd1—N1 | 2.4922 (18) |
C8—C9 | 1.385 (4) | Cd1—O3i | 2.6294 (17) |
C8—H8 | 0.9300 | O2—Cd1ii | 2.3061 (16) |
C9—N2 | 1.344 (3) | O3—Cd1ii | 2.6294 (17) |
C9—H9 | 0.9300 | O4—H4 | 0.8504 |
C10—N2 | 1.333 (3) | O5—S1 | 1.4518 (18) |
C10—C11 | 1.452 (3) | O6—S1 | 1.4527 (16) |
C11—N1 | 1.333 (3) | O7—S1 | 1.4561 (17) |
C12—C13 | 1.381 (3) | O8—H8B | 0.8500 |
C12—C17 | 1.397 (3) | O8—H8A | 0.8519 |
C12—S1 | 1.771 (2) | O9—H9B | 0.8507 |
C13—C14 | 1.395 (3) | O9—H9A | 0.8510 |
C13—H13 | 0.9300 | ||
N1—C1—C2 | 123.6 (2) | C16—C17—H17 | 120.2 |
N1—C1—H1 | 118.2 | C12—C17—H17 | 120.2 |
C2—C1—H1 | 118.2 | O2—C18—O3 | 122.4 (2) |
C1—C2—C3 | 120.2 (2) | O2—C18—C14 | 119.85 (19) |
C1—C2—H2 | 119.9 | O3—C18—C14 | 117.73 (19) |
C3—C2—H2 | 119.9 | O8—Cd1—O9 | 174.22 (6) |
C4—C3—C2 | 116.9 (2) | O8—Cd1—O2i | 95.69 (6) |
C4—C3—H3 | 121.6 | O9—Cd1—O2i | 85.41 (6) |
C2—C3—H3 | 121.6 | O8—Cd1—O7 | 95.66 (6) |
C3—C4—C11 | 118.7 (2) | O9—Cd1—O7 | 90.12 (6) |
C3—C4—C5 | 134.4 (2) | O2i—Cd1—O7 | 81.84 (6) |
C11—C4—C5 | 107.0 (2) | O8—Cd1—N2 | 83.53 (6) |
O1—C5—C6 | 128.0 (2) | O9—Cd1—N2 | 91.30 (6) |
O1—C5—C4 | 126.1 (2) | O2i—Cd1—N2 | 127.58 (6) |
C6—C5—C4 | 105.86 (19) | O7—Cd1—N2 | 150.56 (6) |
C7—C6—C10 | 118.0 (3) | O8—Cd1—N1 | 86.57 (6) |
C7—C6—C5 | 134.6 (2) | O9—Cd1—N1 | 94.42 (6) |
C10—C6—C5 | 107.4 (2) | O2i—Cd1—N1 | 159.30 (6) |
C6—C7—C8 | 117.1 (2) | O7—Cd1—N1 | 77.46 (6) |
C6—C7—H7 | 121.5 | N2—Cd1—N1 | 73.11 (6) |
C8—C7—H7 | 121.5 | O8—Cd1—O3i | 77.46 (5) |
C9—C8—C7 | 120.2 (2) | O9—Cd1—O3i | 98.87 (6) |
C9—C8—H8 | 119.9 | O2i—Cd1—O3i | 52.44 (5) |
C7—C8—H8 | 119.9 | O7—Cd1—O3i | 132.00 (5) |
N2—C9—C8 | 123.4 (2) | N2—Cd1—O3i | 76.72 (5) |
N2—C9—H9 | 118.3 | N1—Cd1—O3i | 147.20 (5) |
C8—C9—H9 | 118.3 | C11—N1—C1 | 114.62 (19) |
N2—C10—C6 | 126.4 (3) | C11—N1—Cd1 | 108.76 (13) |
N2—C10—C11 | 124.04 (19) | C1—N1—Cd1 | 136.50 (16) |
C6—C10—C11 | 109.5 (2) | C10—N2—C9 | 114.8 (2) |
N1—C11—C4 | 126.0 (2) | C10—N2—Cd1 | 110.21 (14) |
N1—C11—C10 | 123.74 (19) | C9—N2—Cd1 | 134.77 (16) |
C4—C11—C10 | 110.22 (19) | C18—O2—Cd1ii | 100.22 (14) |
C13—C12—C17 | 120.43 (19) | C18—O3—Cd1ii | 84.48 (13) |
C13—C12—S1 | 121.07 (15) | C15—O4—H4 | 109.5 |
C17—C12—S1 | 118.46 (16) | S1—O7—Cd1 | 140.81 (11) |
C12—C13—C14 | 120.76 (19) | Cd1—O8—H8B | 128.0 |
C12—C13—H13 | 119.6 | Cd1—O8—H8A | 110.0 |
C14—C13—H13 | 119.6 | H8B—O8—H8A | 103.7 |
C13—C14—C15 | 118.78 (18) | Cd1—O9—H9B | 108.8 |
C13—C14—C18 | 121.01 (18) | Cd1—O9—H9A | 124.9 |
C15—C14—C18 | 120.19 (18) | H9B—O9—H9A | 123.6 |
O4—C15—C16 | 118.54 (19) | O5—S1—O6 | 113.71 (11) |
O4—C15—C14 | 121.31 (19) | O5—S1—O7 | 111.74 (11) |
C16—C15—C14 | 120.15 (19) | O6—S1—O7 | 112.26 (10) |
C17—C16—C15 | 120.2 (2) | O5—S1—C12 | 106.01 (10) |
C17—C16—H16 | 119.9 | O6—S1—C12 | 106.20 (9) |
C15—C16—H16 | 119.9 | O7—S1—C12 | 106.27 (10) |
C16—C17—C12 | 119.62 (19) |
Symmetry codes: (i) −x+1, y+1/2, −z+2; (ii) −x+1, y−1/2, −z+2. |
D—H···A | D—H | H···A | D···A | D—H···A |
O8—H8A···O6iii | 0.85 | 1.96 | 2.801 (3) | 171 |
O8—H8B···O4iv | 0.85 | 1.93 | 2.758 (3) | 164 |
O9—H9A···O5v | 0.85 | 1.98 | 2.771 (3) | 154 |
O9—H9B···O1vi | 0.85 | 2.00 | 2.820 (3) | 161 |
Symmetry codes: (iii) −x+1, y+1/2, −z+1; (iv) x, y, z−1; (v) x+1, y, z; (vi) x, y, z+1. |
D—H···A | D—H | H···A | D···A | D—H···A |
O8—H8A···O6i | 0.85 | 1.96 | 2.801 (3) | 171 |
O8—H8B···O4ii | 0.85 | 1.93 | 2.758 (3) | 164 |
O9—H9A···O5iii | 0.85 | 1.98 | 2.771 (3) | 154 |
O9—H9B···O1iv | 0.85 | 2.00 | 2.820 (3) | 161 |
Symmetry codes: (i) −x+1, y+1/2, −z+1; (ii) x, y, z−1; (iii) x+1, y, z; (iv) x, y, z+1. |
Acknowledgements
This work was supported by the Natural Science Foundation of Jiangxi Province (grant No. 2010GQC0064), the Science and Technology Support Fundation of Jiangxi Province (grant Nos. 2012BBE500038 and 20141BBE50019) and Jiangxi University of Science and Technology Foundation (grant No. 3304000027).
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In order to understand the coordination chemistry of H3ssal and to prepare new supramolecular materials with intriguing structures and potential physical properties, 5-sulfosalicylic acid and chelating bipyridyl-like ligands were widely used to construct coordination complexes (Yan et al., 2009). Nevertheless, the Dafo ligand was seldom referred as one of these bipyridyl-like ligands. We chose 2-hydroxy-5-sulfobenzoic acid as an organic carboxylate anion and 4,5-diazafluoren-9-one as a neutral ligand with a N2-donor set to generate the coordination compound, [Cd(C11H6N2O)(C7H4O6S)(H2O)2]n, which is reported here, under hydrothermal conditions.
As shown in Fig. 1, the asymmetric unit of the title compound consists of one Cd2+ cation, one Hssal2- anion, one Dafo ligand and two aqua ligands. Each Cd(II) center adopts a distorted pentagonal bipyramidal geometry and is seven-coordinated by one sulfonato oxygen atom and two carboxylate oxygen atoms from two different Hssal2- ligands, two N atoms from one Dafo molecule and two water O atoms. The oxygen atoms from the Hssal2- ligands and the nitrogen atoms form the basal plane while the axial positions are occupied by two water oxygen atoms. The Cd—O distances are in the range of 2.285 (2) - 2.629 (2) Å, with an average bond length of 2.3736 (2) Å, which are all within the normal range generally found in the literature (Sun et al., 2010). Hssal2- functions as a tridentate ligand, in which two carboxylate oxygen atoms chelate one Cd atom and one sulfonato oxygen atom binds to another Cd atom. Thus the Cd(II) centers are bridged by the Hssal2- ligands to generate one-dimensional zigzag chains along [010]. Moreover, an extensive hydrogen bond network is observed in the crystal structure of the title compound in which the aqua ligands (O8 and O9) act as the hydrogen donors towards sulfonato oxygen atoms O5 and O6, the hydroxyl oxygen atom O4 and the ketone oxygen atom O1, respectively.