Crystal structure of poly[[aqua­(μ-2,3-di­hydro­thieno[3,4-b][1,4]dioxine-5,7-di­carboxyl­ato-κ2O5:O7)[μ-di(pyridin-4-yl)sulfane-κ2N:N′]zinc] 0.26-hydrate]

Wu, W.-L.; Hu, B.

doi:10.1107/S2056989017002031

research communications

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ISSN: 2056-9890

Volume 73| Part 3| March 2017| Pages 375-377

https://doi.org/10.1107/S2056989017002031

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Crystal structure of poly[[aqua(μ-2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxylato-κ²O⁵:O⁷)[μ-di(pyridin-4-yl)sulfane-κ²N:N′]zinc] 0.26-hydrate]

Wen-Liang Wu ^a and Bing Hu ^a ^*

^aState Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China
^*Correspondence e-mail: hubing@fjirsm.ac.cn

Edited by M. Weil, Vienna University of Technology, Austria (Received 23 January 2017; accepted 8 February 2017; online 14 February 2017)

The crystal structure of the title polymer, {[Zn(C₈H₄O₆S)(C₁₀H₈N₂S)(H₂O)]·0.26H₂O}_n, is characterized by a layered arrangement parallel to the ab plane. The zinc cation is five-coordinated in a slightly distorted trigonal–bipyramidal coordination environment defined by two pyridine ligands, two carboxylate groups of two thiophene dicarboxylate ligands, and by one water molecule. The ethylene bridge in the dioxine ligand is disordered over two sets of sites [occupancy ratio 0.624 (9):0.376 (9)]. Several hydrogen-bonding interactions of the types O—H⋯O, C—H⋯O, C—H⋯S and C—H⋯N ensure the cohesion within the crystal structure.

Keywords: crystal structure; hydrogen bond; zinc; trigonal–bipyramidal coordination environment.

CCDC reference: 1528425

1. Chemical context

Complexes constructed by metal ions and organic ligands are of continuous interest due to the vast diversity and feasible tailorability of their structures and functions compared with purely inorganic compounds (Zhang et al., 2015 ).

The incorporation of both carboxylic and pyridine ligands can lead to a variety of structures (Schoedel et al., 2016 ). Complexes based on thiophene derivatives with carboxylic acid functionalities are of some interest as anticancer agents (Chen et al., 1998 , 1999 ; Guo et al., 2009 ). In this context, we report here on synthesis and crystal structure of the title compound, [Zn(C₈H₄O₆S)(C₁₀H₈N₂S)(H₂O)]·0.26H₂O, (1).

2. Structural commentary

In the crystal structure of (1), the zinc ion is coordinated by four organic ligands and one water molecule, giving rise to a slightly distorted trigonal–bipyramidal coordination environment. Two nitrogen atoms are delivered by two symmetry-related pyridine ligands, two oxygen atoms of two carboxyl groups stem from two symmetry-related thiophene carboxylate ligands, and one O atom from the aqua ligand (Fig. 1). In the trigonal bipyramid, the axial angle O7—Zn1—N2 is 171.31 (6)°. The Zn^II ion is co-planar with the O5—N1—O4 equatorial plane, with the deviation of the Zn atom from this plane being 0.0034 (3) Å. The equatorial Zn1—N1 bond length is 2.1131 (18) Å, while the axial Zn1—N2 bond is longer, 2.2107 (18) Å. Similarly, the two equatorial Zn1—O (O4, O5) bond lengths, ranging from 1.9835 (15) to 2.0285 (15) Å, are shorter than the axial Zn1—O7 bond of 2.1375 (17) Å. These are typical values, numerical details of which are given in Table 1.

Table 1
Selected geometric parameters (Å, °)

Zn1—O5	1.9835 (15)	Zn1—O7	2.1375 (17)
Zn1—O4ⁱ	2.0285 (15)	Zn1—N2ⁱⁱ	2.2107 (18)
Zn1—N1	2.1131 (18)

O5—Zn1—O4ⁱ	117.56 (6)	N1—Zn1—O7	85.43 (7)
O5—Zn1—N1	95.66 (7)	O5—Zn1—N2ⁱⁱ	95.24 (7)
O4ⁱ—Zn1—N1	146.78 (7)	O4ⁱ—Zn1—N2ⁱⁱ	85.85 (7)
O5—Zn1—O7	93.06 (6)	N1—Zn1—N2ⁱⁱ	91.17 (7)
O4ⁱ—Zn1—O7	92.61 (6)	O7—Zn1—N2ⁱⁱ	171.31 (6)
Symmetry codes: (i) x+1, y, z; (ii) x, y+1, z.

Figure 1
The asymmetric unit of (1), with displacement ellipsoids drawn at the 50% probability level. Hydrogen bonding is indicated by dashed lines.

3. Supramolecular features

The bridging coordinating mode of the organic ligands leads to the formation of polymeric layers parallel to the ab plane (Fig. 2).

Figure 2
The polymeric layer in the crystal structure of (1), extending along the ab plane (H atoms have been omitted for clarity).

There are several types of hydrogen bonds in the structure. One intramolecular hydrogen bond is present and extends from a (pyridine)C—H group (C10—H10A) to the coordinating O5 atom of the carboxyl group. Another (pyridine)C—H group (C18—H18A) is hydrogen-bonded to the disordered O8 atom of the lattice water molecule. Three O—H⋯O interactions are present between the coordinating water molecule to either the carboxyl group oxygen atoms or the dioxine oxygen atom in the thiophene derivative with D⋯A distances ranging between 2.733 (2) and 3.123 (2) Å and corresponding O—H⋯O angles of 135 (2) and 159 (2)°. Numerous other C—H⋯O interactions are present between the disordered dioxine C—H groups and a carboxyl O atom (O6) or the lattice water atom O8. Other C—H⋯O interactions involve pyridyl C—H groups and the carboxyl O3 atom. In addition, one C—H⋯S interaction and one C—H⋯N interaction are found between pyridyl C—H groups and the sulfane S1 atom or the pyridyl N1 atom (Fig. 3). It is expected that other extensive hydrogen bonds are formed with the lattice water molecules as the donor group and the coordinating water molecules or carbonyl O atoms from the layers as acceptors (O8⋯O distances in the range 2.87–3.13 Å). However, since the H atoms of the disordered O8 atom were not modelled, a definite statement cannot be made. Numerical details of the hydrogen bonding are given in Table 2.

Table 2
Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O7—H7A⋯O2ⁱⁱⁱ	0.83 (1)	2.48 (2)	3.123 (2)	135 (2)
O7—H7A⋯O4ⁱⁱⁱ	0.83 (1)	2.04 (2)	2.746 (2)	143 (2)
O7—H7B⋯O6^iv	0.83 (1)	1.94 (1)	2.733 (2)	159 (2)
C3—H3A⋯O6^v	0.97	2.66	3.275 (9)	122
C4—H4A⋯O8ⁱⁱⁱ	0.97	2.27	3.015 (17)	133
C3A—H3D⋯O6^v	0.97	2.60	3.473 (19)	150
C4A—H4C⋯O8^vi	0.97	1.93	2.566 (16)	121
C10—H10A⋯O5	0.93	2.50	3.079 (3)	121
C14—H14A⋯O3ⁱ	0.93	2.51	3.213 (3)	133
C15—H15A⋯S1^vii	0.93	3.01	3.768 (2)	140
C15—H15A⋯O3^vii	0.93	2.57	3.096 (3)	116
C15—H15A⋯N1^viii	0.93	2.67	3.227 (3)	119
C18—H18A⋯O8	0.93	2.58	3.190 (13)	123
Symmetry codes: (i) x+1, y, z; (iii) -x+1, -y+1, -z; (iv) -x+2, -y+1, -z; (v) -x+1, -y+2, -z; (vi) x-1, y+1, z; (vii) -x+1, -y, -z+1; (viii) x, y-1, z.

Figure 3
Part of the crystal structure of (1), showing the network formed by intermolecular C—H⋯O, O—H⋯O, C—H⋯S and C—H⋯N hydrogen bonds (shown as dashed lines).

4. Database survey

Some complexes based on tddc²⁻ (H₂ttdc is 2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxylic acid) (Guo et al., 2009) or di(pyridin-4-yl)sulfane (Liu et al., 2015 ; Han et al., 2015 ) have been reported, but a complex incorporating both ligands was not found.

5. Synthesis and crystallization

2,3-Dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxylic acid (H₂ttdc) was prepared as reported (Zhang et al., 2011 ), and di(pyridin-4-yl)sulfane was formed in situ from the reactant 4,4′-dithiodipyridine in the synthesis. A mixture of zinc nitrate (0.06 g, 0.21 mmol), H₂ttdc (0.02 g, 0.10 mmol), 4,4′-dithiodipyridine (0.02 g, 0.10 mmol), 5 ml dimethylformamide and 3 ml water was mixed and heated at 353 K for 3 days. After cooling, 0.17 g light-yellow crystals were collected in a yield of 32%.

6. Refinement

Crystal data, data collection and structure refinement details are summarized in Table 3. H atoms attached to carbon were positioned geometrically and constrained to ride on their parent atoms, with U_iso(H) = 1.2U_eq(C). The H atoms of the coordinating water molecule were located in a difference map and restrained to have comparable bond lengths using DFIX and DANG commands to keep their geometries reasonable; U_iso(H) values were set to 1.5U_eq(O). The hydrogen atoms of the disordered lattice water molecule [occupancy 0.262 (10)] could not be retrieved from difference maps and thus were not part of the model. Two carbon atoms of the dioxine moiety are disordered over two sets of sites and were refined in two parts (C3–C4/C3A–C4A) with a refined occupancy ratio of 0.624 (9)/0.376 (9). Soft restraints (DFIX, SIMU, SADI) were applied on the disordered atoms to keep their geometries and atomic displacement parameters reasonable.

Table 3
Experimental details

Crystal data
Chemical formula	[Zn(C₈H₄O₆S)(C₁₀H₈N₂S)(H₂O)]·0.26H₂O
M_r	504.57
Crystal system, space group	Triclinic, P $[\overline{1}]$
Temperature (K)	295
a, b, c (Å)	10.0052 (6), 10.2173 (5), 10.6694 (5)
α, β, γ (°)	87.515 (4), 68.625 (5), 73.988 (5)
V (Å³)	974.27 (10)
Z	2
Radiation type	Mo Kα
μ (mm⁻¹)	1.52
Crystal size (mm)	0.32 × 0.25 × 0.20

Data collection
Diffractometer	Rigaku SuperNova, single source at offset, EosS2
Absorption correction	Multi-scan (CrysAlis PRO; Rigaku OD, 2015 )
T_min, T_max	0.784, 1.000
No. of measured, independent and observed [I > 2σ(I)] reflections	10924, 3925, 3549
R_int	0.021
(sin θ/λ)_max (Å⁻¹)	0.659

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.030, 0.069, 1.01
No. of reflections	3925
No. of parameters	306
No. of restraints	47
H-atom treatment	H atoms treated by a mixture of independent and constrained refinement
Δρ_max, Δρ_min (e Å⁻³)	0.58, −0.39
Computer programs: CrysAlis PRO (Rigaku OD, 2015), SHELXT2014 (Sheldrick, 2015a ), SHELXL2014 (Sheldrick, 2015b ), DIAMOND (Brandenburg & Putz, 2004 ) and publCIF (Westrip, 2010 ).

Supporting information

CCDC reference: 1528425

Crystal structure: contains datablock I. DOI: https://doi.org/10.1107/S2056989017002031/wm5363sup1.cif

Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S2056989017002031/wm5363Isup2.hkl

checkCIF report

Computing details top

Data collection: CrysAlis PRO (Rigaku OD, 2015); cell refinement: CrysAlis PRO (Rigaku OD, 2015); data reduction: CrysAlis PRO (Rigaku OD, 2015); program(s) used to solve structure: SHELXT2014 (Sheldrick, 2015a); program(s) used to refine structure: SHELXL2014 (Sheldrick, 2015b); molecular graphics: DIAMOND (Brandenburg & Putz, 2004); software used to prepare material for publication: publCIF (Westrip, 2010).

Poly[[aqua(µ-2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxylato-κ²O⁵:O⁷)[µ-di(pyridin-4-yl)sulfane-κ²N:N']zinc] 0.26-hydrate] top

Crystal data top

[Zn(C₈H₄O₆S)(C₁₀H₈N₂S)(H₂O)]·0.26H₂O	Z = 2
M_r = 504.57	F(000) = 512.7
Triclinic, P1	D_x = 1.718 Mg m⁻³
a = 10.0052 (6) Å	Mo Kα radiation, λ = 0.71073 Å
b = 10.2173 (5) Å	Cell parameters from 6096 reflections
c = 10.6694 (5) Å	θ = 4.1–27.2°
α = 87.515 (4)°	µ = 1.52 mm⁻¹
β = 68.625 (5)°	T = 295 K
γ = 73.988 (5)°	Block, yellow
V = 974.27 (10) Å³	0.32 × 0.25 × 0.20 mm

Data collection top

Rigaku SuperNova, single source at offset, EosS2 diffractometer	3925 independent reflections
Radiation source: micro-focus sealed X-ray tube	3549 reflections with I > 2σ(I)
Detector resolution: 8.0584 pixels mm^-1	R_int = 0.021
ω scans	θ_max = 27.9°, θ_min = 3.5°
Absorption correction: multi-scan (CrysAlis PRO; Rigaku OD, 2015)	h = −12→12
T_min = 0.784, T_max = 1.000	k = −13→13
10924 measured reflections	l = −14→13

Refinement top

Refinement on F²	47 restraints
Least-squares matrix: full	Hydrogen site location: mixed
R[F² > 2σ(F²)] = 0.030	H atoms treated by a mixture of independent and constrained refinement
wR(F²) = 0.069	w = 1/[σ²(F_o²) + (0.0267P)² + 0.8P] where P = (F_o² + 2F_c²)/3
S = 1.01	(Δ/σ)_max < 0.001
3925 reflections	Δρ_max = 0.58 e Å⁻³
306 parameters	Δρ_min = −0.39 e Å⁻³

Special details top

Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å²) top

	x	y	z	U_iso*/U_eq	Occ. (<1)
Zn1	0.87280 (3)	0.50627 (3)	0.23783 (3)	0.02570 (9)
S1	0.40744 (6)	0.53672 (5)	0.19475 (5)	0.02461 (13)
S2	0.66583 (9)	0.04878 (7)	0.67347 (6)	0.04739 (19)
O1	0.46527 (18)	0.85023 (18)	−0.01437 (18)	0.0414 (4)
O2	0.17934 (19)	0.80589 (19)	0.0274 (2)	0.0467 (5)
O3	0.11429 (19)	0.47305 (18)	0.27948 (18)	0.0425 (4)
O4	0.03227 (16)	0.59934 (17)	0.13592 (15)	0.0315 (4)
O5	0.69482 (17)	0.54177 (17)	0.18673 (16)	0.0341 (4)
O6	0.72194 (17)	0.71896 (18)	0.05940 (18)	0.0417 (4)
O7	0.98637 (17)	0.32423 (18)	0.10848 (16)	0.0331 (4)
H7A	0.949 (2)	0.331 (3)	0.0497 (19)	0.050*
H7B	1.0774 (12)	0.315 (3)	0.075 (2)	0.050*
N1	0.8030 (2)	0.37482 (18)	0.39130 (18)	0.0271 (4)
N2	0.7799 (2)	−0.31732 (19)	0.38683 (18)	0.0293 (4)
C1	0.5018 (2)	0.6525 (2)	0.1156 (2)	0.0234 (4)
C2	0.4201 (2)	0.7464 (2)	0.0563 (2)	0.0260 (5)
C3	0.3432 (9)	0.9506 (9)	−0.0350 (10)	0.050 (2)	0.624 (9)
H3A	0.3823	1.0115	−0.1018	0.060*	0.624 (9)
H3B	0.2798	1.0046	0.0487	0.060*	0.624 (9)
C4	0.2518 (6)	0.8826 (6)	−0.0820 (6)	0.0520 (16)	0.624 (9)
H4A	0.1773	0.9509	−0.1056	0.062*	0.624 (9)
H4B	0.3160	0.8218	−0.1611	0.062*	0.624 (9)
C3A	0.3637 (11)	0.9273 (19)	−0.0762 (13)	0.049 (4)	0.376 (9)
H3C	0.3861	0.8817	−0.1623	0.059*	0.376 (9)
H3D	0.3792	1.0171	−0.0932	0.059*	0.376 (9)
C4A	0.2024 (9)	0.9430 (7)	0.0105 (12)	0.055 (3)	0.376 (9)
H4C	0.1787	0.9870	0.0977	0.066*	0.376 (9)
H4D	0.1377	0.9989	−0.0322	0.066*	0.376 (9)
C6	0.2801 (2)	0.7233 (2)	0.0760 (2)	0.0275 (5)
C7	0.2570 (2)	0.6134 (2)	0.1493 (2)	0.0246 (4)
C8	0.6522 (2)	0.6389 (2)	0.1185 (2)	0.0270 (5)
C9	0.1274 (2)	0.5569 (2)	0.1920 (2)	0.0271 (5)
C10	0.6685 (3)	0.3545 (3)	0.4234 (3)	0.0364 (5)
H10A	0.6029	0.4076	0.3856	0.044*
C11	0.6230 (3)	0.2585 (3)	0.5098 (3)	0.0419 (6)
H11A	0.5276	0.2488	0.5314	0.050*
C12	0.7185 (3)	0.1776 (2)	0.5640 (2)	0.0333 (5)
C13	0.8558 (3)	0.1991 (3)	0.5352 (3)	0.0445 (6)
H13A	0.9224	0.1476	0.5728	0.053*
C14	0.8924 (3)	0.2991 (3)	0.4487 (3)	0.0452 (7)
H14A	0.9852	0.3141	0.4299	0.054*
C15	0.7464 (3)	−0.3252 (2)	0.5191 (2)	0.0332 (5)
H15A	0.7490	−0.4104	0.5540	0.040*
C16	0.7082 (3)	−0.2146 (2)	0.6076 (2)	0.0347 (5)
H16A	0.6836	−0.2252	0.6995	0.042*
C17	0.7074 (3)	−0.0877 (2)	0.5566 (2)	0.0331 (5)
C18	0.7401 (3)	−0.0775 (3)	0.4195 (3)	0.0446 (7)
H18A	0.7383	0.0065	0.3820	0.054*
C19	0.7751 (3)	−0.1935 (2)	0.3391 (2)	0.0404 (6)
H19A	0.7966	−0.1852	0.2472	0.049*
O8	0.9744 (16)	0.0639 (13)	0.2164 (12)	0.126 (7)	0.262 (10)

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
Zn1	0.02134 (13)	0.02812 (15)	0.03265 (15)	−0.01234 (10)	−0.01248 (10)	0.00955 (10)
S1	0.0224 (3)	0.0256 (3)	0.0299 (3)	−0.0091 (2)	−0.0128 (2)	0.0050 (2)
S2	0.0788 (5)	0.0330 (3)	0.0288 (3)	−0.0272 (3)	−0.0098 (3)	0.0049 (3)
O1	0.0354 (9)	0.0444 (10)	0.0579 (11)	−0.0242 (8)	−0.0256 (8)	0.0275 (9)
O2	0.0373 (10)	0.0506 (11)	0.0721 (13)	−0.0245 (9)	−0.0374 (9)	0.0357 (10)
O3	0.0427 (10)	0.0491 (11)	0.0498 (11)	−0.0300 (9)	−0.0231 (8)	0.0265 (9)
O4	0.0234 (8)	0.0453 (10)	0.0338 (8)	−0.0185 (7)	−0.0139 (7)	0.0095 (7)
O5	0.0248 (8)	0.0393 (10)	0.0456 (10)	−0.0101 (7)	−0.0213 (7)	0.0103 (8)
O6	0.0235 (8)	0.0425 (10)	0.0624 (12)	−0.0158 (8)	−0.0162 (8)	0.0160 (9)
O7	0.0253 (8)	0.0427 (10)	0.0341 (9)	−0.0126 (8)	−0.0118 (7)	0.0031 (7)
N1	0.0269 (9)	0.0250 (10)	0.0312 (10)	−0.0107 (8)	−0.0105 (8)	0.0052 (8)
N2	0.0330 (10)	0.0268 (10)	0.0317 (10)	−0.0117 (8)	−0.0139 (8)	0.0063 (8)
C1	0.0190 (10)	0.0273 (11)	0.0252 (11)	−0.0090 (8)	−0.0079 (8)	0.0016 (9)
C2	0.0242 (10)	0.0282 (12)	0.0284 (11)	−0.0122 (9)	−0.0098 (9)	0.0058 (9)
C3	0.050 (4)	0.046 (4)	0.073 (5)	−0.026 (3)	−0.039 (3)	0.035 (4)
C4	0.051 (3)	0.065 (3)	0.061 (3)	−0.032 (3)	−0.036 (3)	0.039 (3)
C3A	0.046 (5)	0.049 (6)	0.061 (7)	−0.020 (4)	−0.027 (5)	0.034 (5)
C4A	0.046 (4)	0.047 (5)	0.083 (6)	−0.016 (4)	−0.038 (4)	0.036 (4)
C6	0.0228 (10)	0.0326 (12)	0.0329 (12)	−0.0108 (9)	−0.0152 (9)	0.0084 (9)
C7	0.0208 (10)	0.0295 (12)	0.0270 (11)	−0.0091 (9)	−0.0112 (8)	0.0032 (9)
C8	0.0198 (10)	0.0305 (12)	0.0317 (12)	−0.0075 (9)	−0.0098 (9)	−0.0006 (9)
C9	0.0236 (11)	0.0298 (12)	0.0308 (12)	−0.0131 (9)	−0.0090 (9)	0.0024 (9)
C10	0.0284 (12)	0.0387 (14)	0.0433 (14)	−0.0120 (10)	−0.0137 (10)	0.0111 (11)
C11	0.0338 (13)	0.0492 (16)	0.0473 (15)	−0.0228 (12)	−0.0132 (11)	0.0147 (12)
C12	0.0457 (14)	0.0235 (12)	0.0271 (12)	−0.0130 (10)	−0.0069 (10)	0.0013 (9)
C13	0.0433 (15)	0.0397 (15)	0.0514 (16)	−0.0093 (12)	−0.0215 (12)	0.0172 (12)
C14	0.0315 (13)	0.0500 (16)	0.0605 (17)	−0.0187 (12)	−0.0208 (12)	0.0225 (13)
C15	0.0398 (13)	0.0285 (12)	0.0360 (13)	−0.0141 (10)	−0.0168 (11)	0.0114 (10)
C16	0.0429 (14)	0.0339 (13)	0.0292 (12)	−0.0141 (11)	−0.0136 (10)	0.0078 (10)
C17	0.0396 (13)	0.0279 (12)	0.0324 (12)	−0.0116 (10)	−0.0126 (10)	0.0036 (9)
C18	0.0727 (19)	0.0260 (13)	0.0367 (14)	−0.0166 (13)	−0.0206 (13)	0.0100 (10)
C19	0.0594 (17)	0.0330 (14)	0.0293 (13)	−0.0135 (12)	−0.0169 (12)	0.0072 (10)
O8	0.138 (13)	0.101 (10)	0.094 (10)	−0.032 (8)	0.007 (8)	0.002 (7)

Geometric parameters (Å, º) top

Zn1—O5	1.9835 (15)	C2—C6	1.424 (3)
Zn1—O4ⁱ	2.0285 (15)	C3—C4	1.512 (8)
Zn1—N1	2.1131 (18)	C3—H3A	0.9700
Zn1—O7	2.1375 (17)	C3—H3B	0.9700
Zn1—N2ⁱⁱ	2.2107 (18)	C4—H4A	0.9700
S1—C1	1.718 (2)	C4—H4B	0.9700
S1—C7	1.721 (2)	C3A—C4A	1.506 (9)
S2—C17	1.768 (2)	C3A—H3C	0.9700
S2—C12	1.781 (2)	C3A—H3D	0.9700
O1—C2	1.358 (3)	C4A—H4C	0.9700
O1—C3	1.441 (5)	C4A—H4D	0.9700
O1—C3A	1.446 (7)	C6—C7	1.364 (3)
O2—C6	1.367 (3)	C7—C9	1.477 (3)
O2—C4	1.456 (4)	C10—C11	1.371 (3)
O2—C4A	1.474 (6)	C10—H10A	0.9300
O3—C9	1.236 (3)	C11—C12	1.363 (3)
O4—C9	1.271 (3)	C11—H11A	0.9300
O4—Zn1ⁱⁱⁱ	2.0285 (15)	C12—C13	1.372 (4)
O5—C8	1.275 (3)	C13—C14	1.382 (4)
O6—C8	1.226 (3)	C13—H13A	0.9300
O7—H7A	0.827 (9)	C14—H14A	0.9300
O7—H7B	0.828 (9)	C15—C16	1.380 (3)
N1—C14	1.323 (3)	C15—H15A	0.9300
N1—C10	1.336 (3)	C16—C17	1.383 (3)
N2—C15	1.331 (3)	C16—H16A	0.9300
N2—C19	1.339 (3)	C17—C18	1.384 (3)
N2—Zn1^iv	2.2107 (18)	C18—C19	1.379 (3)
C1—C2	1.372 (3)	C18—H18A	0.9300
C1—C8	1.484 (3)	C19—H19A	0.9300

O5—Zn1—O4ⁱ	117.56 (6)	H3C—C3A—H3D	107.8
O5—Zn1—N1	95.66 (7)	O2—C4A—C3A	108.1 (11)
O4ⁱ—Zn1—N1	146.78 (7)	O2—C4A—H4C	110.1
O5—Zn1—O7	93.06 (6)	C3A—C4A—H4C	110.1
O4ⁱ—Zn1—O7	92.61 (6)	O2—C4A—H4D	110.1
N1—Zn1—O7	85.43 (7)	C3A—C4A—H4D	110.1
O5—Zn1—N2ⁱⁱ	95.24 (7)	H4C—C4A—H4D	108.4
O4ⁱ—Zn1—N2ⁱⁱ	85.85 (7)	C7—C6—O2	124.33 (19)
N1—Zn1—N2ⁱⁱ	91.17 (7)	C7—C6—C2	113.23 (19)
O7—Zn1—N2ⁱⁱ	171.31 (6)	O2—C6—C2	122.4 (2)
C1—S1—C7	92.49 (10)	C6—C7—C9	129.87 (19)
C17—S2—C12	101.52 (11)	C6—C7—S1	110.81 (15)
C2—O1—C3	111.8 (4)	C9—C7—S1	119.32 (17)
C2—O1—C3A	113.7 (7)	O6—C8—O5	126.4 (2)
C6—O2—C4	111.1 (2)	O6—C8—C1	119.5 (2)
C6—O2—C4A	110.1 (3)	O5—C8—C1	114.1 (2)
C9—O4—Zn1ⁱⁱⁱ	101.88 (14)	O3—C9—O4	122.8 (2)
C8—O5—Zn1	126.61 (15)	O3—C9—C7	120.0 (2)
Zn1—O7—H7A	106.5 (19)	O4—C9—C7	117.1 (2)
Zn1—O7—H7B	110.6 (19)	N1—C10—C11	122.7 (2)
H7A—O7—H7B	111.7 (16)	N1—C10—H10A	118.7
C14—N1—C10	117.0 (2)	C11—C10—H10A	118.7
C14—N1—Zn1	122.99 (16)	C12—C11—C10	119.6 (2)
C10—N1—Zn1	119.57 (16)	C12—C11—H11A	120.2
C15—N2—C19	116.8 (2)	C10—C11—H11A	120.2
C15—N2—Zn1^iv	125.22 (15)	C11—C12—C13	118.6 (2)
C19—N2—Zn1^iv	117.37 (15)	C11—C12—S2	121.1 (2)
C2—C1—C8	129.8 (2)	C13—C12—S2	120.2 (2)
C2—C1—S1	111.10 (15)	C12—C13—C14	118.2 (2)
C8—C1—S1	119.09 (16)	C12—C13—H13A	120.9
O1—C2—C1	124.96 (19)	C14—C13—H13A	120.9
O1—C2—C6	122.68 (19)	N1—C14—C13	123.7 (2)
C1—C2—C6	112.4 (2)	N1—C14—H14A	118.2
O1—C3—C4	110.7 (6)	C13—C14—H14A	118.2
O1—C3—H3A	109.5	N2—C15—C16	124.0 (2)
C4—C3—H3A	109.5	N2—C15—H15A	118.0
O1—C3—H3B	109.5	C16—C15—H15A	118.0
C4—C3—H3B	109.5	C15—C16—C17	118.6 (2)
H3A—C3—H3B	108.1	C15—C16—H16A	120.7
O2—C4—C3	108.1 (6)	C17—C16—H16A	120.7
O2—C4—H4A	110.1	C16—C17—C18	118.0 (2)
C3—C4—H4A	110.1	C16—C17—S2	116.68 (18)
O2—C4—H4B	110.1	C18—C17—S2	125.28 (19)
C3—C4—H4B	110.1	C19—C18—C17	119.2 (2)
H4A—C4—H4B	108.4	C19—C18—H18A	120.4
O1—C3A—C4A	112.5 (8)	C17—C18—H18A	120.4
O1—C3A—H3C	109.1	N2—C19—C18	123.3 (2)
C4A—C3A—H3C	109.1	N2—C19—H19A	118.4
O1—C3A—H3D	109.1	C18—C19—H19A	118.4
C4A—C3A—H3D	109.1

C7—S1—C1—C2	−0.11 (17)	Zn1—O5—C8—C1	−170.36 (13)
C7—S1—C1—C8	−179.57 (17)	C2—C1—C8—O6	−1.2 (3)
C3—O1—C2—C1	−165.4 (5)	S1—C1—C8—O6	178.18 (17)
C3A—O1—C2—C1	174.9 (8)	C2—C1—C8—O5	177.9 (2)
C3—O1—C2—C6	14.9 (5)	S1—C1—C8—O5	−2.7 (3)
C3A—O1—C2—C6	−4.7 (8)	Zn1ⁱⁱⁱ—O4—C9—O3	3.9 (3)
C8—C1—C2—O1	−0.2 (4)	Zn1ⁱⁱⁱ—O4—C9—C7	−175.43 (15)
S1—C1—C2—O1	−179.60 (17)	C6—C7—C9—O3	−166.0 (2)
C8—C1—C2—C6	179.5 (2)	S1—C7—C9—O3	13.6 (3)
S1—C1—C2—C6	0.1 (2)	C6—C7—C9—O4	13.4 (3)
C2—O1—C3—C4	−46.5 (8)	S1—C7—C9—O4	−167.03 (16)
C3A—O1—C3—C4	53 (3)	C14—N1—C10—C11	−1.1 (4)
C6—O2—C4—C3	−50.6 (6)	Zn1—N1—C10—C11	171.90 (19)
C4A—O2—C4—C3	46.4 (6)	N1—C10—C11—C12	−1.5 (4)
O1—C3—C4—O2	66.3 (9)	C10—C11—C12—C13	3.1 (4)
C2—O1—C3A—C4A	36.5 (17)	C10—C11—C12—S2	−178.43 (19)
C3—O1—C3A—C4A	−51 (2)	C17—S2—C12—C11	83.8 (2)
C6—O2—C4A—C3A	54.2 (9)	C17—S2—C12—C13	−97.7 (2)
C4—O2—C4A—C3A	−45.6 (7)	C11—C12—C13—C14	−2.1 (4)
O1—C3A—C4A—O2	−62.5 (17)	S2—C12—C13—C14	179.4 (2)
C4—O2—C6—C7	−160.5 (4)	C10—N1—C14—C13	2.1 (4)
C4A—O2—C6—C7	154.0 (5)	Zn1—N1—C14—C13	−170.6 (2)
C4—O2—C6—C2	20.7 (4)	C12—C13—C14—N1	−0.5 (4)
C4A—O2—C6—C2	−24.9 (6)	C19—N2—C15—C16	−0.1 (4)
O1—C2—C6—C7	179.7 (2)	Zn1^iv—N2—C15—C16	170.64 (18)
C1—C2—C6—C7	0.0 (3)	N2—C15—C16—C17	−1.5 (4)
O1—C2—C6—O2	−1.4 (3)	C15—C16—C17—C18	2.2 (4)
C1—C2—C6—O2	179.0 (2)	C15—C16—C17—S2	−177.25 (19)
O2—C6—C7—C9	0.6 (4)	C12—S2—C17—C16	167.2 (2)
C2—C6—C7—C9	179.5 (2)	C12—S2—C17—C18	−12.2 (3)
O2—C6—C7—S1	−179.02 (18)	C16—C17—C18—C19	−1.4 (4)
C2—C6—C7—S1	−0.1 (2)	S2—C17—C18—C19	178.0 (2)
C1—S1—C7—C6	0.11 (17)	C15—N2—C19—C18	1.0 (4)
C1—S1—C7—C9	−179.53 (17)	Zn1^iv—N2—C19—C18	−170.5 (2)
Zn1—O5—C8—O6	8.7 (3)	C17—C18—C19—N2	−0.2 (4)

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

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
O7—H7A···O2^v	0.83 (1)	2.48 (2)	3.123 (2)	135 (2)
O7—H7A···O4^v	0.83 (1)	2.04 (2)	2.746 (2)	143 (2)
O7—H7B···O6^vi	0.83 (1)	1.94 (1)	2.733 (2)	159 (2)
C3—H3A···O6^vii	0.97	2.66	3.275 (9)	122
C4—H4A···O8^v	0.97	2.27	3.015 (17)	133
C3A—H3D···O6^vii	0.97	2.60	3.473 (19)	150
C4A—H4C···O8^viii	0.97	1.93	2.566 (16)	121
C10—H10A···O5	0.93	2.50	3.079 (3)	121
C14—H14A···O3ⁱ	0.93	2.51	3.213 (3)	133
C15—H15A···S1^ix	0.93	3.01	3.768 (2)	140
C15—H15A···O3^ix	0.93	2.57	3.096 (3)	116
C15—H15A···N1^iv	0.93	2.67	3.227 (3)	119
C18—H18A···O8	0.93	2.58	3.190 (13)	123

Symmetry codes: (i) x+1, y, z; (iv) x, y−1, z; (v) −x+1, −y+1, −z; (vi) −x+2, −y+1, −z; (vii) −x+1, −y+2, −z; (viii) x−1, y+1, z; (ix) −x+1, −y, −z+1.

Funding information

Funding for this research was provided by: Natural Science Foundation of Fujian Province (award No. 2013J05035).

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