metal-organic compounds
catena-poly[[[tetraaquazinc(II)]-μ-1,4-bis[4-(1H-imidazol-1-yl)benzoyl]piperazine] dinitrate monohydrate]
ofaCollege of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, People's Republic of China
*Correspondence e-mail: jcliuchem@163.com
In the title polymeric complex, {[Zn(C24H22N6O2)(H2O)4](NO3)2·2H2O}n, the ZnII cation, located about a twofold rotation axis, is coordinated by two imidazole groups and four water molecules in a distorted N2O4 octahedral geometry; among the four coordinate water molecules, two are located on the same twofold rotation axis. The 1,4-bis[4-(1H-imidazol-1-yl)benzoyl]piperazine] ligand is centro-symmetric, with the centroid of the piperazine ring located on an inversion center, and bridges the ZnII cations, forming polymeric chains propagating along [201]. In the crystal, O—H⋯O and weak C—H⋯O hydrogen bonds link the polymeric chains, nitrate anions and solvent water molecules into a three-dimensional supramolecular architecture. A short O⋯O contact of 2.823 (13) Å is observed between neighboring nitrate anions.
CCDC reference: 1060401
1. Related literature
For related coordination polymers and their potential applications, see: Xu et al. (2004); Gandolfo & LaDuca (2011a,b); Wang et al. (2011, 2014).
2. Experimental
2.1. Crystal data
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2.3. Refinement
|
Data collection: APEX2 (Bruker, 2008); cell SAINT (Bruker, 2008); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL.
Supporting information
CCDC reference: 1060401
https://doi.org/10.1107/S2056989015007719/xu5847sup1.cif
contains datablocks I, New_Global_Publ_Block. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S2056989015007719/xu5847Isup2.hkl
Piperazine derivatives as N-containing ligands which have different combination of span, multi-coordination point and hydrogen-bonding points of contact, to conform coordination complexes has attracted great attention. (Wang et al., 2011, 2014; Gandolfo & LaDuca et al., 2011a,b; Xu et al., 2004). Nevertheless, piperazine derivatives-containing the imidazole group as the coordinated point have been designed forming coordination compounds relatively few. As the imidazole has a similar properties with pyridine, so in this context, we design and successfully synthesized the compound {[Zn(C24H22N6O2)(H2O)4](NO3)2(H2O)2}n based on the piperazine-1,4-diylbis((4-(1H-imidazol-1-yl)phenyl)methanone) ligand, obtained under hydrothermal technique. An
of the title compound includes a half ZnII, a half piperazine-1,4-diylbis((4-(1H-imidazol-1-yl)phenyl)methanone) ligands, two coordinated water molecules, an uncoordinated nitrate anion and one uncoordinated water molecule (Fig. 1). The ZnII atom is coordinated and lies on an inversion centre of a slighter distorted octahedral, with two ligands [two imidazole N atoms, Zn—N = 2.122 (3) Å] and four coordinated water molecules [Zn—O bond lengths in the range of 2.112 (4) – 2.138 (3) Å]. Between the 1D chains formed by the ligand and ZnII atoms are interconnected via water O—H···O hydrogen bonds to form a three dimension supramolecular architecture. In the crystal, in the nitrate anions and the uncoordinated water molecules forming the O—H···N hydrogen bonds to stabilize the three dimension skeleton (Fig. 2).A mixture of L (0.1 mmol, 0.0462 g), Zn(NO3)2.6H2O (0.2 mmol, 0.059 g), distilled water (6.0 mL) sealed in a 25 mL Teflon-lined stainless steel vessel and heated at 130 °C for 72 h under auto-pressure, after cooling to room temperature. Primrose yellow prismatic single crystals were removed (yield: 24%).
Piperazine derivatives as N-containing ligands which have different combination of span, multi-coordination point and hydrogen-bonding points of contact, to conform coordination complexes has attracted great attention. (Wang et al., 2011, 2014; Gandolfo & LaDuca et al., 2011a,b; Xu et al., 2004). Nevertheless, piperazine derivatives-containing the imidazole group as the coordinated point have been designed forming coordination compounds relatively few. As the imidazole has a similar properties with pyridine, so in this context, we design and successfully synthesized the compound {[Zn(C24H22N6O2)(H2O)4](NO3)2(H2O)2}n based on the piperazine-1,4-diylbis((4-(1H-imidazol-1-yl)phenyl)methanone) ligand, obtained under hydrothermal technique. An
of the title compound includes a half ZnII, a half piperazine-1,4-diylbis((4-(1H-imidazol-1-yl)phenyl)methanone) ligands, two coordinated water molecules, an uncoordinated nitrate anion and one uncoordinated water molecule (Fig. 1). The ZnII atom is coordinated and lies on an inversion centre of a slighter distorted octahedral, with two ligands [two imidazole N atoms, Zn—N = 2.122 (3) Å] and four coordinated water molecules [Zn—O bond lengths in the range of 2.112 (4) – 2.138 (3) Å]. Between the 1D chains formed by the ligand and ZnII atoms are interconnected via water O—H···O hydrogen bonds to form a three dimension supramolecular architecture. In the crystal, in the nitrate anions and the uncoordinated water molecules forming the O—H···N hydrogen bonds to stabilize the three dimension skeleton (Fig. 2).For related coordination polymers and their potential applications, see: Xu et al. (2004); Gandolfo & LaDuca (2011a,b); Wang et al. (2011, 2014).
A mixture of L (0.1 mmol, 0.0462 g), Zn(NO3)2.6H2O (0.2 mmol, 0.059 g), distilled water (6.0 mL) sealed in a 25 mL Teflon-lined stainless steel vessel and heated at 130 °C for 72 h under auto-pressure, after cooling to room temperature. Primrose yellow prismatic single crystals were removed (yield: 24%).
detailsWater H atoms were located in a difference Fourier map and refined in riding mode with Uiso(H) = 1.2Ueq(O). Other H atoms were placed in calculated positions with C—H = 0.93–0.96 Å and refined using a riding model, Uiso(H) = 1.2Ueq(C).
Data collection: APEX2 (Bruker, 2008); cell
SAINT (Bruker, 2008); data reduction: SAINT (Bruker, 2008); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).Fig. 1. A part of the polymeric chain of the title compound. Displacement ellipsoids are drawn at the 30% probability level. |
[Zn(C24H22N6O2)(H2O)4](NO3)2·2H2O | F(000) = 1504 |
Mr = 723.96 | Dx = 1.589 Mg m−3 |
Monoclinic, C2/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -C 2yc | Cell parameters from 7728 reflections |
a = 22.051 (4) Å | θ = 2.7–28.6° |
b = 7.8861 (16) Å | µ = 0.90 mm−1 |
c = 17.837 (4) Å | T = 294 K |
β = 102.65 (3)° | Block, colorless |
V = 3026.5 (11) Å3 | 0.27 × 0.25 × 0.22 mm |
Z = 4 |
Bruker APEXII CCD diffractometer | 2720 independent reflections |
Radiation source: fine-focus sealed tube | 2212 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.030 |
ω scan | θmax = 25.2°, θmin = 3.3° |
Absorption correction: multi-scan (SADABS; Bruker, 2008) | h = −26→26 |
Tmin = 0.79, Tmax = 0.83 | k = −9→6 |
5133 measured reflections | l = −21→11 |
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)] = 0.055 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.144 | H-atom parameters constrained |
S = 1.05 | w = 1/[σ2(Fo2) + (0.0575P)2 + 8.9494P] where P = (Fo2 + 2Fc2)/3 |
2720 reflections | (Δ/σ)max < 0.001 |
196 parameters | Δρmax = 0.57 e Å−3 |
6 restraints | Δρmin = −0.83 e Å−3 |
[Zn(C24H22N6O2)(H2O)4](NO3)2·2H2O | V = 3026.5 (11) Å3 |
Mr = 723.96 | Z = 4 |
Monoclinic, C2/c | Mo Kα radiation |
a = 22.051 (4) Å | µ = 0.90 mm−1 |
b = 7.8861 (16) Å | T = 294 K |
c = 17.837 (4) Å | 0.27 × 0.25 × 0.22 mm |
β = 102.65 (3)° |
Bruker APEXII CCD diffractometer | 2720 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2008) | 2212 reflections with I > 2σ(I) |
Tmin = 0.79, Tmax = 0.83 | Rint = 0.030 |
5133 measured reflections |
R[F2 > 2σ(F2)] = 0.055 | 6 restraints |
wR(F2) = 0.144 | H-atom parameters constrained |
S = 1.05 | Δρmax = 0.57 e Å−3 |
2720 reflections | Δρmin = −0.83 e Å−3 |
196 parameters |
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. |
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 > 2sigma(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 | ||
Zn1 | 0.5000 | 0.96013 (12) | 0.7500 | 0.0363 (3) | |
N1 | 0.6774 (3) | 0.2834 (11) | 0.7201 (4) | 0.078 (2) | |
N2 | 0.56556 (19) | 0.9716 (6) | 0.8564 (2) | 0.0366 (10) | |
N3 | 0.6522 (2) | 0.9960 (6) | 0.9451 (3) | 0.0380 (11) | |
O1 | 0.5000 | 0.6945 (7) | 0.7500 | 0.0656 (19) | |
H1A | 0.5215 | 0.6270 | 0.7813 | 0.079* | |
O2 | 0.57119 (17) | 0.9622 (6) | 0.6871 (2) | 0.0541 (11) | |
H2A | 0.5960 | 1.0433 | 0.6903 | 0.065* | |
H2B | 0.5993 | 0.8872 | 0.6922 | 0.065* | |
O3 | 0.5000 | 1.2290 (7) | 0.7500 | 0.0530 (15) | |
H3A | 0.5283 | 1.2929 | 0.7738 | 0.064* | |
O4 | 0.92408 (18) | 1.0374 (6) | 1.1542 (2) | 0.0508 (11) | |
O5 | 0.6282 (4) | 0.3010 (19) | 0.6852 (6) | 0.224 (7) | |
O6 | 0.6930 (4) | 0.1535 (12) | 0.7462 (6) | 0.164 (4) | |
O7 | 0.7160 (4) | 0.3959 (12) | 0.7332 (7) | 0.167 (4) | |
O8 | 0.6636 (2) | 0.7354 (8) | 0.7064 (4) | 0.104 (2) | |
H8A | 0.6651 | 0.6280 | 0.7091 | 0.125* | |
H8B | 0.6952 | 0.7741 | 0.7339 | 0.125* | |
C1 | 0.6268 (2) | 0.9722 (8) | 0.8698 (3) | 0.0410 (13) | |
H1 | 0.6496 | 0.9579 | 0.8321 | 0.049* | |
C2 | 0.5516 (3) | 0.9983 (8) | 0.9263 (3) | 0.0466 (15) | |
H2 | 0.5115 | 1.0051 | 0.9347 | 0.056* | |
C3 | 0.6038 (3) | 1.0134 (9) | 0.9812 (3) | 0.0499 (16) | |
H3 | 0.6065 | 1.0320 | 1.0333 | 0.060* | |
C4 | 0.7176 (2) | 1.0017 (7) | 0.9795 (3) | 0.0380 (13) | |
C5 | 0.7578 (2) | 1.0726 (8) | 0.9392 (3) | 0.0426 (14) | |
H5 | 0.7429 | 1.1197 | 0.8909 | 0.051* | |
C6 | 0.8208 (2) | 1.0726 (8) | 0.9719 (3) | 0.0440 (14) | |
H6 | 0.8484 | 1.1186 | 0.9447 | 0.053* | |
C7 | 0.8435 (2) | 1.0051 (7) | 1.0444 (3) | 0.0381 (13) | |
C8 | 0.8017 (3) | 0.9408 (8) | 1.0846 (3) | 0.0445 (14) | |
H8 | 0.8161 | 0.9001 | 1.1343 | 0.053* | |
C9 | 0.7385 (3) | 0.9360 (8) | 1.0522 (3) | 0.0447 (14) | |
H9 | 0.7108 | 0.8893 | 1.0789 | 0.054* | |
C10 | 0.9109 (3) | 1.0080 (7) | 1.0844 (3) | 0.042 | |
N4 | 0.95517 (18) | 0.9803 (6) | 1.0449 (2) | 0.036 | |
C12 | 0.9476 (3) | 0.8984 (9) | 0.9696 (3) | 0.050 | |
H12A | 0.9037 | 0.8881 | 0.9463 | 0.060* | |
H12B | 0.9651 | 0.7851 | 0.9762 | 0.060* | |
C13 | 1.0212 (3) | 1.0026 (9) | 1.0821 (4) | 0.0522 (16) | |
H13A | 1.0410 | 0.8927 | 1.0926 | 0.063* | |
H13B | 1.0248 | 1.0620 | 1.1305 | 0.063* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Zn1 | 0.0232 (5) | 0.0463 (6) | 0.0345 (5) | 0.000 | −0.0042 (3) | 0.000 |
N1 | 0.057 (4) | 0.099 (6) | 0.076 (4) | 0.007 (4) | 0.010 (4) | 0.036 (4) |
N2 | 0.024 (2) | 0.047 (3) | 0.034 (2) | 0.0000 (19) | −0.0029 (18) | −0.001 (2) |
N3 | 0.023 (2) | 0.054 (3) | 0.033 (2) | −0.0007 (19) | −0.0043 (18) | −0.001 (2) |
O1 | 0.069 (4) | 0.042 (3) | 0.063 (4) | 0.000 | −0.035 (3) | 0.000 |
O2 | 0.027 (2) | 0.086 (3) | 0.047 (2) | 0.004 (2) | 0.0023 (18) | −0.005 (2) |
O3 | 0.047 (3) | 0.044 (3) | 0.054 (4) | 0.000 | −0.019 (3) | 0.000 |
O4 | 0.033 (2) | 0.076 (3) | 0.037 (2) | −0.001 (2) | −0.0075 (17) | −0.008 (2) |
O5 | 0.069 (5) | 0.422 (19) | 0.157 (8) | 0.008 (7) | −0.027 (5) | 0.171 (10) |
O6 | 0.126 (7) | 0.130 (7) | 0.210 (10) | −0.035 (6) | −0.019 (6) | 0.073 (7) |
O7 | 0.127 (7) | 0.104 (6) | 0.276 (13) | −0.019 (6) | 0.054 (8) | 0.027 (7) |
O8 | 0.055 (3) | 0.113 (5) | 0.137 (6) | 0.025 (3) | 0.004 (3) | −0.029 (4) |
C1 | 0.025 (3) | 0.063 (4) | 0.031 (3) | 0.003 (3) | −0.002 (2) | −0.006 (3) |
C2 | 0.024 (3) | 0.073 (4) | 0.041 (3) | 0.000 (3) | 0.003 (2) | −0.004 (3) |
C3 | 0.034 (3) | 0.080 (5) | 0.034 (3) | −0.005 (3) | 0.004 (2) | −0.004 (3) |
C4 | 0.025 (3) | 0.050 (3) | 0.033 (3) | −0.001 (2) | −0.006 (2) | −0.001 (2) |
C5 | 0.031 (3) | 0.057 (4) | 0.033 (3) | −0.002 (3) | −0.005 (2) | 0.009 (3) |
C6 | 0.029 (3) | 0.061 (4) | 0.040 (3) | −0.006 (3) | 0.002 (2) | 0.007 (3) |
C7 | 0.024 (3) | 0.050 (3) | 0.035 (3) | −0.001 (2) | −0.007 (2) | −0.003 (2) |
C8 | 0.037 (3) | 0.059 (4) | 0.031 (3) | 0.000 (3) | −0.007 (2) | 0.005 (3) |
C9 | 0.029 (3) | 0.065 (4) | 0.037 (3) | −0.005 (3) | 0.002 (2) | 0.006 (3) |
C10 | 0.029 | 0.049 | 0.040 | −0.001 | −0.010 | 0.002 |
N4 | 0.018 | 0.055 | 0.029 | −0.006 | −0.006 | −0.009 |
C12 | 0.030 | 0.063 | 0.050 | −0.006 | −0.004 | −0.014 |
C13 | 0.027 (3) | 0.079 (5) | 0.043 (3) | −0.005 (3) | −0.009 (2) | −0.011 (3) |
Zn1—O1 | 2.095 (6) | C2—H2 | 0.9300 |
Zn1—O2i | 2.120 (4) | C3—H3 | 0.9300 |
Zn1—O2 | 2.120 (4) | C4—C5 | 1.375 (8) |
Zn1—O3 | 2.120 (6) | C4—C9 | 1.379 (8) |
Zn1—N2 | 2.121 (4) | C5—C6 | 1.384 (7) |
Zn1—N2i | 2.121 (4) | C5—H5 | 0.9300 |
N1—O5 | 1.136 (9) | C6—C7 | 1.387 (8) |
N1—O6 | 1.146 (10) | C6—H6 | 0.9300 |
N1—O7 | 1.216 (10) | C7—C8 | 1.383 (8) |
N2—C1 | 1.318 (7) | C7—C10 | 1.501 (7) |
N2—C2 | 1.364 (7) | C8—C9 | 1.386 (8) |
N3—C1 | 1.351 (7) | C8—H8 | 0.9300 |
N3—C3 | 1.369 (7) | C9—H9 | 0.9300 |
N3—C4 | 1.439 (6) | C10—N4 | 1.342 (7) |
O1—H1A | 0.8391 | N4—C12 | 1.466 (7) |
O2—H2A | 0.8351 | N4—C13 | 1.471 (6) |
O2—H2B | 0.8465 | C12—C13ii | 1.489 (9) |
O3—H3A | 0.8409 | C12—H12A | 0.9700 |
O4—C10 | 1.235 (7) | C12—H12B | 0.9700 |
O8—H8A | 0.8490 | C13—C12ii | 1.489 (9) |
O8—H8B | 0.8196 | C13—H13A | 0.9700 |
C1—H1 | 0.9300 | C13—H13B | 0.9700 |
C2—C3 | 1.344 (8) | ||
O1—Zn1—O2i | 90.45 (13) | N3—C3—H3 | 126.8 |
O1—Zn1—O2 | 90.45 (13) | C5—C4—C9 | 121.5 (5) |
O2i—Zn1—O2 | 179.1 (3) | C5—C4—N3 | 119.4 (5) |
O1—Zn1—O3 | 180.000 (3) | C9—C4—N3 | 119.1 (5) |
O2i—Zn1—O3 | 89.55 (13) | C4—C5—C6 | 118.8 (5) |
O2—Zn1—O3 | 89.55 (13) | C4—C5—H5 | 120.6 |
O1—Zn1—N2 | 92.45 (13) | C6—C5—H5 | 120.6 |
O2i—Zn1—N2 | 87.99 (16) | C5—C6—C7 | 121.1 (5) |
O2—Zn1—N2 | 91.97 (16) | C5—C6—H6 | 119.4 |
O3—Zn1—N2 | 87.55 (13) | C7—C6—H6 | 119.4 |
O1—Zn1—N2i | 92.45 (13) | C8—C7—C6 | 118.6 (5) |
O2i—Zn1—N2i | 91.97 (16) | C8—C7—C10 | 117.5 (5) |
O2—Zn1—N2i | 87.99 (16) | C6—C7—C10 | 123.8 (5) |
O3—Zn1—N2i | 87.55 (13) | C7—C8—C9 | 121.1 (5) |
N2—Zn1—N2i | 175.1 (3) | C7—C8—H8 | 119.5 |
O5—N1—O6 | 119.8 (11) | C9—C8—H8 | 119.5 |
O5—N1—O7 | 124.1 (11) | C4—C9—C8 | 118.7 (5) |
O6—N1—O7 | 116.1 (9) | C4—C9—H9 | 120.6 |
C1—N2—C2 | 105.2 (4) | C8—C9—H9 | 120.6 |
C1—N2—Zn1 | 129.2 (4) | O4—C10—N4 | 121.4 (5) |
C2—N2—Zn1 | 125.3 (4) | O4—C10—C7 | 118.2 (5) |
C1—N3—C3 | 106.5 (4) | N4—C10—C7 | 120.4 (5) |
C1—N3—C4 | 125.9 (5) | C10—N4—C12 | 127.1 (4) |
C3—N3—C4 | 127.5 (5) | C10—N4—C13 | 120.4 (4) |
Zn1—O1—H1A | 129.4 | C12—N4—C13 | 111.6 (4) |
Zn1—O2—H2A | 121.3 | N4—C12—C13ii | 111.2 (5) |
Zn1—O2—H2B | 123.2 | N4—C12—H12A | 109.4 |
H2A—O2—H2B | 94.3 | C13ii—C12—H12A | 109.4 |
Zn1—O3—H3A | 126.8 | N4—C12—H12B | 109.4 |
H8A—O8—H8B | 108.6 | C13ii—C12—H12B | 109.4 |
N2—C1—N3 | 111.5 (5) | H12A—C12—H12B | 108.0 |
N2—C1—H1 | 124.3 | N4—C13—C12ii | 109.3 (5) |
N3—C1—H1 | 124.3 | N4—C13—H13A | 109.8 |
C3—C2—N2 | 110.5 (5) | C12ii—C13—H13A | 109.8 |
C3—C2—H2 | 124.8 | N4—C13—H13B | 109.8 |
N2—C2—H2 | 124.8 | C12ii—C13—H13B | 109.8 |
C2—C3—N3 | 106.3 (5) | H13A—C13—H13B | 108.3 |
C2—C3—H3 | 126.8 |
Symmetry codes: (i) −x+1, y, −z+3/2; (ii) −x+2, −y+2, −z+2. |
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1A···O4iii | 0.84 | 1.96 | 2.795 (6) | 174 |
O2—H2A···O5iv | 0.84 | 2.16 | 2.956 (15) | 159 |
O2—H2A···O6iv | 0.84 | 2.32 | 3.060 (10) | 148 |
O2—H2B···O8 | 0.85 | 1.83 | 2.676 (7) | 176 |
O3—H3A···O4v | 0.84 | 1.99 | 2.804 (6) | 163 |
O8—H8A···O7 | 0.85 | 2.14 | 2.914 (11) | 151 |
O8—H8B···O7vi | 0.82 | 2.14 | 2.926 (11) | 160 |
C1—H1···O6iv | 0.93 | 2.51 | 3.232 (11) | 135 |
C5—H5···O6iv | 0.93 | 2.59 | 3.485 (12) | 162 |
Symmetry codes: (iii) −x+3/2, −y+3/2, −z+2; (iv) x, y+1, z; (v) −x+3/2, −y+5/2, −z+2; (vi) −x+3/2, y+1/2, −z+3/2. |
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1A···O4i | 0.84 | 1.96 | 2.795 (6) | 174 |
O2—H2A···O5ii | 0.84 | 2.16 | 2.956 (15) | 159 |
O2—H2A···O6ii | 0.84 | 2.32 | 3.060 (10) | 148 |
O2—H2B···O8 | 0.85 | 1.83 | 2.676 (7) | 176 |
O3—H3A···O4iii | 0.84 | 1.99 | 2.804 (6) | 163 |
O8—H8A···O7 | 0.85 | 2.14 | 2.914 (11) | 151 |
O8—H8B···O7iv | 0.82 | 2.14 | 2.926 (11) | 160 |
C1—H1···O6ii | 0.93 | 2.51 | 3.232 (11) | 135 |
C5—H5···O6ii | 0.93 | 2.59 | 3.485 (12) | 162 |
Symmetry codes: (i) −x+3/2, −y+3/2, −z+2; (ii) x, y+1, z; (iii) −x+3/2, −y+5/2, −z+2; (iv) −x+3/2, y+1/2, −z+3/2. |
Acknowledgements
The work was supported by the National Natural Science Foundation of China (Nos. 21461023 and 21361023) and the Fundamental Research Funds of Gansu University, China.
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