metal-organic compounds
Acetonitriletriaqua[3-ethoxy-1,8-(3,6,9-trioxaundecane-1,11-diyldioxy)-9H-xanthen-9-one]terbium(III) tris(perchlorate)
aCollege of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People's Republic of China
*Correspondence e-mail: tangn@lzu.edu.cn
In the title compound, [Tb(CH3CN)(C23H26O8)(H2O)3](ClO4)3, the Tb3+ atom is eight-coordinated by one N atom of an acetonitrile molecule, three water O atoms and four ligand O atoms. The Tb3+ atom is located on one side of the macrocycle and the carbonyl oxygen coordinated to the terbium [Tb1—O1= 2.210 (3) Å] is bent out of the xanthone plane by 0.514 (3) Å. The geometry around terbium is a distorted two-capped trigonal prism.
Related literature
For a previous study of xanthone–ether, see: Shen, Pan, Wang, Wu et al. (2008); Wu et al. (2009). For the synthesis of similar xanthone–ether compounds, see: Shen, Pan, Wang, Yao et al. (2008); Mills et al. (1995).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2002); cell SAINT (Bruker, 2002); 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
https://doi.org/10.1107/S1600536810018313/kp2258sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810018313/kp2258Isup2.hkl
3-ethoxy-1,8-trihydroxyxanthone was prepared as follows: 1,3,8-trihydroxyxanthone (2.44 g, 10 mmol) was dissolved in acethone (150 ml). Bromoethane (1.64 g, 15 mmol) and anhydrous potassium carbonate (2 g) was added. Then the mixture was stirred at 333 K for 12 h. The resulting mixture was filtrated and the filtration was evaporated.The residue was purified by column chromatography(SiO2, EtOAc/petroleum ether, 1:9). Then light-yellow powder was obtained. Yield: 61.20%. MS (ESI) m/z(%): 272.0 [M], 1H NMR(300 MHz, CDCl3): 7.60-7.51 (t, 1 H), 6.89-6.76 (m, 2 H), 6.40-6.17 (d, 2 H), 4.18-4.07(m, 2 H), 1.56-1.43(m, 3 H).
3-Ethoxy-1,8-(3,6,9-trioxaundecane-1,11-diylioxy)xanthone was prepared as follows: 3-ethoxy-1,8-trihydroxyxanthone (1.36 g, 5 mmol) was dissolved in the dry DMF (350 ml), and anhydrous potassium carbonate (2.07 g,15 mmol) was added under N2. 1,11-Dibromo-3,6,9-trioxaundecane (3.20 g, 10 mmol) was added and the mixture refluxed for 14 h. Most of the DMF was evaporated. The resulting mixture was diluted with water (60 ml), extracted several times with chloroform and the chloroform extracts evaporated. The residue was purified by
(SiO2, CHCl3/EtOH, 10:1), and then recrystallized from dry toluene afforded L as light-yellow crystals. Yield: 40.60%. M.p. 434-436 K. MS (ESI) m/z(%): 430.3 [M]. 1H NMR (400 MHz, CDCl3, ppm): 7.45-7.41 (t, 1H); 6.91-6.89 (d, 1H); 6.68-6.66 (d, 1H); 6.38-6.37 (s, 1H); 6.24-6.23 (s, 1H); 4.20-4.14 (m, 4H); 4.02-3.97 (m, 8 H); 3.85-3.81 (m, 4 H); 4.20-4.14 (m, 4H); 4.11-4.05 (m, 2H); 1.46-1.42 (m, 3H); IR (KBr, cm-1): 3426(s), 2869(s), 1661(s), 1566(s), 1473(s), 1322(s), 1268(s), 1114(s), 893(s), 772(s).The title compound was prepared as follows: ligand (86.1 mg, 0.2 mmol) was dissolved in 7 ml of acetonitrile. Terbium(III) perchlorate hexahydrate (113.1 mg, 0.2 mmol) was dissolved in 4 ml of acetonitrile and added dropwise to the above solution. After the solution was stirred for 2 h, all the solvent was evaporated. The residue was redissolved in 3 ml of acetonitrile and layered with diethyl ether. Fine yellowish-block crystal was obtained. Yield: 50%. M.p. 447-449 K. Elemental anal. calcd for C25H35O23Cl3NTb: C, 30.55%; H, 3.59%; N, 1.43%. Found: C, 30.70%; H, 3.41%; N, 1.59%. IR (KBr, cm-1): 3357(s), 2934(s), 2869(s), 1625(s), 1564(s), 1474(s), 1319(s), 1273(s), 1112(s), 889(s), 778(s).
The xanthone derivatives show good properties in pharmacology and selectively recognition of guest species. A series of alkali metal and alkaline earth metal complexes derived from xanthone-crown ether have been synthesised and studied as fluorescent sensors. However, the rare earth complexes with novel structure derived from xanthone-crown ether have rarely been reported. Herein, we report the synthesis and structure of the title compound, 3-ethoxy-1,8-(3,6,9-trioxaundecane-1,11-diylioxy)xanthone terbium(III) perchlorate. The Tb3+ is located on one side of the macrocycle and the carbonyl oxygen coordinated to the terbium (Tb1—O1= 2.210 (3) Å) is bent out of the xanthone plane as to increase the coordination space. Tb3+ is eight coordinated by one nitrogen of CH3CN (Tb1—N1= 2.467 (5) Å), three oxygens from three water molecule (Tb1—O21= 2.412 (4) Å, Tb1—O22= 2.391 (4) Å, Tb1—O23= 2.359 (5) Å) and four ligand oxygens (Tb1—O1= 2.210 (3) Å, Tb1—O3= 2.467 (4) Å, Tb1—O4= 2.442 (4) Å, and Tb1—O5= 2.477 (4) Å) (Fig. 1 and Table 1). The selected bond angles around Tb3+ were listed as following: O1—Tb1—O3 = 105.85°, O1—Tb1—O4 = 148.44°, O1—Tb1—O5 = 106.73°, O3—Tb1—O4 = 66.29°, O4—Tb1—O5 = 66.27°, O3—Tb1—O5 = 130.40°, O21—Tb1—O22 = 132.39°, O21—Tb1—O23 = 141.50°, O22—Tb1—O23 = 75.57°. Geometry around terbium is a distorted two-capped trigonal prism.
For related literature, see: Mills et al. (1995); Shen, Pan, Wang, Wu, Tang & Ning (2008); Shen, Pan, Wang, Yao, Wu, Tang & Ning (2008); Wu et al. (2009). It would be much more useful to readers if the "Related literature" section had some kind of simple sub-division, so that, instead of just "For related literature, see···" it said, for example, "For general background, see···. For related structures, see···.? etc. Please revise this section as indicated.
Data collection: SMART (Bruker, 2002); cell
SAINT (Bruker, 2002); data reduction: SAINT (Bruker, 2002); 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).[Tb(C2H3N)(C23H26O8)(H2O)3](ClO4)3 | Z = 2 |
Mr = 982.81 | F(000) = 984 |
Triclinic, P1 | Dx = 1.793 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 10.2838 (2) Å | Cell parameters from 5453 reflections |
b = 11.7932 (3) Å | θ = 1.3–27.6° |
c = 15.4680 (4) Å | µ = 2.25 mm−1 |
α = 85.933 (1)° | T = 296 K |
β = 84.813 (1)° | Block, light yellow |
γ = 77.363 (1)° | 0.25 × 0.21 × 0.15 mm |
V = 1820.48 (7) Å3 |
Bruker SMART CCD area-detector diffractometer | 8058 independent reflections |
Radiation source: fine-focus sealed tube | 6378 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.019 |
phi and ω scans | θmax = 27.6°, θmin = 1.3° |
Absorption correction: multi-scan (SADABS; Bruker, 2002) | h = −13→11 |
Tmin = 0.575, Tmax = 0.713 | k = −13→15 |
11523 measured reflections | l = −20→20 |
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)] = 0.044 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.113 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.03 | w = 1/[σ2(Fo2) + (0.0551P)2 + 2.2597P] where P = (Fo2 + 2Fc2)/3 |
8058 reflections | (Δ/σ)max = 0.001 |
495 parameters | Δρmax = 0.96 e Å−3 |
0 restraints | Δρmin = −0.85 e Å−3 |
[Tb(C2H3N)(C23H26O8)(H2O)3](ClO4)3 | γ = 77.363 (1)° |
Mr = 982.81 | V = 1820.48 (7) Å3 |
Triclinic, P1 | Z = 2 |
a = 10.2838 (2) Å | Mo Kα radiation |
b = 11.7932 (3) Å | µ = 2.25 mm−1 |
c = 15.4680 (4) Å | T = 296 K |
α = 85.933 (1)° | 0.25 × 0.21 × 0.15 mm |
β = 84.813 (1)° |
Bruker SMART CCD area-detector diffractometer | 8058 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2002) | 6378 reflections with I > 2σ(I) |
Tmin = 0.575, Tmax = 0.713 | Rint = 0.019 |
11523 measured reflections |
R[F2 > 2σ(F2)] = 0.044 | 0 restraints |
wR(F2) = 0.113 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.03 | Δρmax = 0.96 e Å−3 |
8058 reflections | Δρmin = −0.85 e Å−3 |
495 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 > 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 | ||
Tb1 | 0.62956 (3) | 0.68996 (2) | 0.713567 (15) | 0.04133 (9) | |
O1 | 0.8255 (3) | 0.6826 (3) | 0.7643 (2) | 0.0450 (8) | |
O21 | 0.6216 (5) | 0.5850 (4) | 0.8529 (3) | 0.0566 (10) | |
H21 | 0.6430 | 0.5149 | 0.8460 | 0.085* | |
O3 | 0.4659 (3) | 0.8280 (3) | 0.8027 (2) | 0.0532 (9) | |
O4 | 0.4088 (4) | 0.6427 (4) | 0.7352 (2) | 0.0583 (10) | |
O22 | 0.7823 (5) | 0.6600 (4) | 0.5871 (3) | 0.0629 (11) | |
H22 | 0.7403 | 0.6693 | 0.5436 | 0.094* | |
O5 | 0.6272 (5) | 0.4898 (4) | 0.6758 (3) | 0.0645 (11) | |
Cl3 | 0.58766 (14) | 0.28177 (12) | 0.93099 (9) | 0.0524 (3) | |
O7 | 1.1022 (3) | 0.5922 (3) | 0.9413 (2) | 0.0450 (8) | |
O2 | 0.6953 (3) | 0.8444 (3) | 0.8646 (2) | 0.0479 (8) | |
O23 | 0.4973 (5) | 0.7627 (6) | 0.5967 (3) | 0.0722 (16) | |
H23 | 0.5268 | 0.8151 | 0.5696 | 0.108* | |
C8 | 1.0050 (5) | 0.6910 (4) | 0.9512 (3) | 0.0419 (11) | |
C1 | 0.8996 (5) | 0.6481 (4) | 0.8254 (3) | 0.0394 (11) | |
C12 | 0.7988 (5) | 0.8197 (4) | 0.9165 (3) | 0.0426 (11) | |
C14 | 0.5776 (5) | 0.9279 (5) | 0.8924 (4) | 0.0479 (12) | |
H14A | 0.6002 | 1.0018 | 0.9008 | 0.058* | |
H14B | 0.5375 | 0.9006 | 0.9469 | 0.058* | |
C15 | 0.4839 (6) | 0.9414 (5) | 0.8238 (4) | 0.0567 (14) | |
H15A | 0.3984 | 0.9890 | 0.8436 | 0.068* | |
H15B | 0.5186 | 0.9803 | 0.7723 | 0.068* | |
Cl1 | 0.12202 (18) | 0.72796 (18) | 0.58648 (11) | 0.0746 (5) | |
O6 | 0.8842 (4) | 0.4699 (3) | 0.7159 (3) | 0.0592 (10) | |
O17 | 0.6598 (4) | 0.1902 (4) | 0.9828 (3) | 0.0781 (14) | |
O9 | 0.2559 (5) | 0.7073 (6) | 0.5564 (3) | 0.0971 (17) | |
C2 | 0.9915 (5) | 0.5367 (4) | 0.8252 (3) | 0.0400 (11) | |
C3 | 0.9880 (5) | 0.4490 (5) | 0.7672 (3) | 0.0474 (12) | |
C11 | 0.8093 (5) | 0.8861 (5) | 0.9839 (3) | 0.0456 (12) | |
H11 | 0.7421 | 0.9505 | 0.9973 | 0.055* | |
C7 | 1.0918 (5) | 0.5144 (5) | 0.8830 (3) | 0.0435 (11) | |
O19 | 0.4947 (7) | 0.3609 (6) | 0.9798 (4) | 0.119 (2) | |
C6 | 1.1903 (5) | 0.4127 (5) | 0.8834 (4) | 0.0508 (13) | |
H6 | 1.2562 | 0.3994 | 0.9226 | 0.061* | |
C22 | 1.0381 (6) | 0.9085 (5) | 1.1451 (4) | 0.0578 (14) | |
H22A | 1.1163 | 0.9158 | 1.1069 | 0.069* | |
H22B | 1.0533 | 0.8307 | 1.1725 | 0.069* | |
O8 | 0.9219 (4) | 0.9290 (3) | 1.0964 (2) | 0.0556 (9) | |
N1 | 0.6831 (5) | 0.8781 (4) | 0.6609 (3) | 0.0579 (12) | |
O18 | 0.6795 (6) | 0.3394 (5) | 0.8823 (4) | 0.111 (2) | |
C16 | 0.3279 (6) | 0.8247 (7) | 0.7959 (4) | 0.0669 (18) | |
H16A | 0.2983 | 0.8624 | 0.7412 | 0.080* | |
H16B | 0.2723 | 0.8656 | 0.8429 | 0.080* | |
C4 | 1.0872 (6) | 0.3490 (5) | 0.7670 (4) | 0.0590 (15) | |
H4 | 1.0872 | 0.2921 | 0.7283 | 0.071* | |
C5 | 1.1868 (6) | 0.3329 (5) | 0.8241 (4) | 0.0594 (16) | |
H5 | 1.2536 | 0.2655 | 0.8220 | 0.071* | |
C24 | 0.7305 (8) | 0.9440 (7) | 0.6198 (5) | 0.0745 (19) | |
C17 | 0.3163 (6) | 0.7015 (7) | 0.8009 (4) | 0.0716 (19) | |
H17A | 0.3369 | 0.6659 | 0.8579 | 0.086* | |
H17B | 0.2259 | 0.6964 | 0.7912 | 0.086* | |
C23 | 1.0136 (7) | 0.9969 (7) | 1.2126 (4) | 0.077 (2) | |
H23A | 0.9924 | 1.0735 | 1.1851 | 0.115* | |
H23B | 1.0923 | 0.9889 | 1.2434 | 0.115* | |
H23C | 0.9402 | 0.9851 | 1.2527 | 0.115* | |
C18 | 0.4008 (8) | 0.5229 (6) | 0.7296 (5) | 0.085 (2) | |
H18A | 0.3113 | 0.5184 | 0.7173 | 0.102* | |
H18B | 0.4213 | 0.4798 | 0.7842 | 0.102* | |
C20 | 0.7348 (8) | 0.4169 (6) | 0.6267 (5) | 0.082 (2) | |
H20A | 0.7610 | 0.4606 | 0.5751 | 0.098* | |
H20B | 0.7039 | 0.3511 | 0.6082 | 0.098* | |
C19 | 0.4985 (8) | 0.4731 (7) | 0.6589 (5) | 0.083 (2) | |
H19A | 0.5007 | 0.3907 | 0.6564 | 0.099* | |
H19B | 0.4730 | 0.5114 | 0.6035 | 0.099* | |
C21 | 0.8518 (8) | 0.3737 (6) | 0.6776 (5) | 0.0717 (18) | |
H21A | 0.8319 | 0.3173 | 0.7227 | 0.086* | |
H21B | 0.9272 | 0.3360 | 0.6401 | 0.086* | |
O20 | 0.5193 (8) | 0.2364 (6) | 0.8729 (6) | 0.155 (3) | |
O11 | 0.0459 (7) | 0.7624 (8) | 0.5156 (5) | 0.150 (3) | |
Cl2 | 0.6453 (2) | 0.83662 (18) | 0.38551 (11) | 0.0855 (6) | |
O14 | 0.5774 (8) | 0.8979 (6) | 0.4544 (4) | 0.124 (2) | |
O13 | 0.7159 (10) | 0.7302 (8) | 0.4167 (4) | 0.191 (5) | |
O12 | 0.0867 (10) | 0.6318 (8) | 0.6195 (8) | 0.214 (5) | |
C25 | 0.7899 (11) | 1.0288 (9) | 0.5657 (7) | 0.123 (4) | |
H25A | 0.8034 | 1.0060 | 0.5066 | 0.185* | |
H25B | 0.8742 | 1.0320 | 0.5864 | 0.185* | |
H25C | 0.7311 | 1.1040 | 0.5684 | 0.185* | |
O15 | 0.7179 (9) | 0.8940 (7) | 0.3332 (6) | 0.169 (4) | |
O16 | 0.5489 (14) | 0.8129 (8) | 0.3300 (7) | 0.228 (6) | |
O10 | 0.0952 (10) | 0.8067 (11) | 0.6477 (7) | 0.236 (6) | |
C13 | 0.8999 (5) | 0.7188 (4) | 0.8973 (3) | 0.0383 (10) | |
C10 | 0.9210 (5) | 0.8566 (5) | 1.0321 (3) | 0.0450 (12) | |
C9 | 1.0207 (5) | 0.7590 (5) | 1.0162 (3) | 0.0458 (12) | |
H9 | 1.0954 | 0.7402 | 1.0483 | 0.055* | |
H21C | 0.569 (6) | 0.614 (5) | 0.888 (4) | 0.049 (18)* | |
H22C | 0.868 (7) | 0.639 (6) | 0.588 (5) | 0.08 (2)* | |
H23D | 0.447 (8) | 0.747 (8) | 0.595 (6) | 0.09 (4)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Tb1 | 0.04631 (15) | 0.04543 (15) | 0.03356 (13) | −0.01557 (11) | −0.00238 (9) | 0.00619 (9) |
O1 | 0.0435 (19) | 0.050 (2) | 0.0392 (18) | −0.0054 (16) | −0.0057 (15) | 0.0032 (15) |
O21 | 0.079 (3) | 0.049 (2) | 0.040 (2) | −0.017 (2) | 0.007 (2) | 0.0028 (17) |
O3 | 0.0391 (19) | 0.064 (3) | 0.057 (2) | −0.0079 (18) | −0.0062 (16) | −0.0111 (19) |
O4 | 0.060 (2) | 0.070 (3) | 0.052 (2) | −0.033 (2) | −0.0022 (18) | 0.0069 (19) |
O22 | 0.064 (3) | 0.074 (3) | 0.047 (2) | −0.012 (2) | 0.003 (2) | 0.004 (2) |
O5 | 0.077 (3) | 0.053 (3) | 0.068 (3) | −0.022 (2) | −0.011 (2) | −0.006 (2) |
Cl3 | 0.0543 (8) | 0.0476 (8) | 0.0520 (7) | −0.0045 (6) | −0.0053 (6) | 0.0023 (6) |
O7 | 0.0366 (18) | 0.045 (2) | 0.049 (2) | −0.0004 (15) | −0.0050 (15) | 0.0018 (16) |
O2 | 0.0410 (19) | 0.048 (2) | 0.049 (2) | 0.0060 (16) | −0.0106 (15) | −0.0079 (16) |
O23 | 0.062 (3) | 0.107 (4) | 0.055 (3) | −0.042 (3) | −0.018 (2) | 0.032 (2) |
C8 | 0.038 (3) | 0.042 (3) | 0.045 (3) | −0.012 (2) | 0.001 (2) | 0.005 (2) |
C1 | 0.034 (2) | 0.042 (3) | 0.039 (2) | −0.008 (2) | 0.0051 (19) | 0.003 (2) |
C12 | 0.042 (3) | 0.039 (3) | 0.045 (3) | −0.006 (2) | −0.004 (2) | 0.003 (2) |
C14 | 0.045 (3) | 0.038 (3) | 0.057 (3) | 0.001 (2) | −0.004 (2) | −0.009 (2) |
C15 | 0.049 (3) | 0.051 (3) | 0.064 (4) | 0.007 (3) | −0.014 (3) | −0.007 (3) |
Cl1 | 0.0713 (10) | 0.0992 (13) | 0.0619 (9) | −0.0366 (10) | 0.0023 (8) | −0.0143 (9) |
O6 | 0.070 (3) | 0.047 (2) | 0.060 (2) | −0.008 (2) | −0.009 (2) | −0.0096 (18) |
O17 | 0.063 (3) | 0.074 (3) | 0.089 (3) | −0.006 (2) | −0.005 (2) | 0.030 (3) |
O9 | 0.074 (3) | 0.150 (5) | 0.080 (3) | −0.048 (3) | −0.009 (3) | −0.012 (3) |
C2 | 0.039 (3) | 0.040 (3) | 0.039 (2) | −0.008 (2) | 0.0040 (19) | 0.002 (2) |
C3 | 0.050 (3) | 0.045 (3) | 0.045 (3) | −0.010 (2) | 0.004 (2) | 0.000 (2) |
C11 | 0.044 (3) | 0.042 (3) | 0.048 (3) | −0.004 (2) | −0.001 (2) | −0.003 (2) |
C7 | 0.038 (3) | 0.049 (3) | 0.042 (3) | −0.011 (2) | 0.003 (2) | 0.005 (2) |
O19 | 0.126 (5) | 0.115 (5) | 0.086 (4) | 0.032 (4) | 0.021 (4) | −0.015 (3) |
C6 | 0.038 (3) | 0.052 (3) | 0.058 (3) | −0.003 (2) | −0.001 (2) | 0.010 (3) |
C22 | 0.061 (4) | 0.061 (4) | 0.056 (3) | −0.019 (3) | −0.013 (3) | −0.004 (3) |
O8 | 0.061 (2) | 0.053 (2) | 0.054 (2) | −0.0103 (19) | −0.0105 (18) | −0.0107 (18) |
N1 | 0.067 (3) | 0.052 (3) | 0.055 (3) | −0.017 (2) | −0.010 (2) | 0.012 (2) |
O18 | 0.088 (4) | 0.088 (4) | 0.139 (5) | −0.005 (3) | 0.017 (4) | 0.051 (4) |
C16 | 0.038 (3) | 0.109 (6) | 0.056 (4) | −0.019 (3) | 0.000 (2) | −0.015 (4) |
C4 | 0.066 (4) | 0.045 (3) | 0.060 (4) | −0.005 (3) | 0.015 (3) | −0.005 (3) |
C5 | 0.048 (3) | 0.043 (3) | 0.077 (4) | 0.000 (3) | 0.012 (3) | 0.008 (3) |
C24 | 0.085 (5) | 0.077 (5) | 0.064 (4) | −0.026 (4) | −0.011 (4) | 0.008 (4) |
C17 | 0.051 (3) | 0.114 (6) | 0.056 (4) | −0.038 (4) | 0.006 (3) | 0.006 (4) |
C23 | 0.074 (4) | 0.099 (6) | 0.067 (4) | −0.034 (4) | −0.007 (3) | −0.023 (4) |
C18 | 0.085 (5) | 0.081 (5) | 0.102 (6) | −0.053 (4) | −0.014 (4) | 0.023 (4) |
C20 | 0.107 (6) | 0.062 (4) | 0.077 (5) | −0.009 (4) | −0.011 (4) | −0.037 (4) |
C19 | 0.090 (5) | 0.067 (5) | 0.103 (6) | −0.036 (4) | −0.022 (5) | −0.008 (4) |
C21 | 0.091 (5) | 0.058 (4) | 0.065 (4) | −0.007 (4) | −0.009 (4) | −0.020 (3) |
O20 | 0.171 (7) | 0.114 (5) | 0.189 (8) | −0.001 (5) | −0.114 (6) | −0.037 (5) |
O11 | 0.102 (5) | 0.235 (9) | 0.121 (6) | −0.028 (5) | −0.047 (4) | −0.036 (6) |
Cl2 | 0.1145 (15) | 0.0836 (13) | 0.0432 (8) | 0.0040 (11) | 0.0072 (9) | 0.0045 (8) |
O14 | 0.175 (7) | 0.107 (5) | 0.070 (4) | 0.005 (4) | 0.022 (4) | −0.016 (3) |
O13 | 0.240 (10) | 0.175 (8) | 0.080 (4) | 0.104 (7) | 0.019 (5) | 0.026 (5) |
O12 | 0.176 (8) | 0.158 (8) | 0.289 (12) | −0.062 (7) | 0.077 (8) | 0.081 (8) |
C25 | 0.149 (9) | 0.114 (8) | 0.122 (8) | −0.073 (7) | −0.010 (7) | 0.033 (6) |
O15 | 0.168 (8) | 0.130 (6) | 0.188 (8) | −0.038 (6) | 0.070 (6) | 0.036 (6) |
O16 | 0.378 (17) | 0.152 (8) | 0.186 (9) | −0.063 (9) | −0.161 (11) | −0.016 (7) |
O10 | 0.158 (8) | 0.340 (15) | 0.215 (10) | 0.000 (9) | −0.021 (7) | −0.211 (11) |
C13 | 0.037 (2) | 0.038 (3) | 0.039 (2) | −0.007 (2) | −0.0002 (19) | 0.0036 (19) |
C10 | 0.048 (3) | 0.046 (3) | 0.044 (3) | −0.016 (2) | −0.002 (2) | −0.001 (2) |
C9 | 0.043 (3) | 0.050 (3) | 0.045 (3) | −0.011 (2) | −0.007 (2) | 0.002 (2) |
Tb1—O1 | 2.210 (3) | C2—C7 | 1.395 (7) |
Tb1—O23 | 2.359 (5) | C2—C3 | 1.424 (7) |
Tb1—O22 | 2.391 (4) | C3—C4 | 1.381 (8) |
Tb1—O21 | 2.412 (4) | C11—C10 | 1.393 (7) |
Tb1—O4 | 2.442 (4) | C11—H11 | 0.9300 |
Tb1—N1 | 2.467 (5) | C7—C6 | 1.391 (7) |
Tb1—O3 | 2.467 (4) | C6—C5 | 1.368 (8) |
Tb1—O5 | 2.477 (4) | C6—H6 | 0.9300 |
O1—C1 | 1.257 (6) | C22—O8 | 1.437 (7) |
O21—H21 | 0.8200 | C22—C23 | 1.494 (8) |
O21—H21C | 0.78 (6) | C22—H22A | 0.9700 |
O3—C16 | 1.442 (6) | C22—H22B | 0.9700 |
O3—C15 | 1.453 (7) | O8—C10 | 1.358 (6) |
O4—C17 | 1.433 (7) | N1—C24 | 1.134 (8) |
O4—C18 | 1.443 (8) | C16—C17 | 1.480 (10) |
O22—H22 | 0.8200 | C16—H16A | 0.9700 |
O22—H22C | 0.86 (7) | C16—H16B | 0.9700 |
O5—C19 | 1.430 (8) | C4—C5 | 1.386 (9) |
O5—C20 | 1.437 (8) | C4—H4 | 0.9300 |
Cl3—O19 | 1.391 (5) | C5—H5 | 0.9300 |
Cl3—O20 | 1.391 (6) | C24—C25 | 1.459 (10) |
Cl3—O17 | 1.411 (5) | C17—H17A | 0.9700 |
Cl3—O18 | 1.415 (5) | C17—H17B | 0.9700 |
O7—C7 | 1.357 (6) | C23—H23A | 0.9600 |
O7—C8 | 1.366 (6) | C23—H23B | 0.9600 |
O2—C12 | 1.359 (6) | C23—H23C | 0.9600 |
O2—C14 | 1.437 (6) | C18—C19 | 1.478 (11) |
O23—H23 | 0.8200 | C18—H18A | 0.9700 |
O23—H23D | 0.59 (8) | C18—H18B | 0.9700 |
C8—C9 | 1.372 (7) | C20—C21 | 1.474 (10) |
C8—C13 | 1.393 (7) | C20—H20A | 0.9700 |
C1—C13 | 1.436 (7) | C20—H20B | 0.9700 |
C1—C2 | 1.441 (7) | C19—H19A | 0.9700 |
C12—C11 | 1.373 (7) | C19—H19B | 0.9700 |
C12—C13 | 1.428 (7) | C21—H21A | 0.9700 |
C14—C15 | 1.474 (7) | C21—H21B | 0.9700 |
C14—H14A | 0.9700 | Cl2—O15 | 1.306 (7) |
C14—H14B | 0.9700 | Cl2—O14 | 1.378 (5) |
C15—H15A | 0.9700 | Cl2—O13 | 1.383 (7) |
C15—H15B | 0.9700 | Cl2—O16 | 1.452 (9) |
Cl1—O12 | 1.321 (8) | C25—H25A | 0.9600 |
Cl1—O10 | 1.341 (7) | C25—H25B | 0.9600 |
Cl1—O9 | 1.387 (5) | C25—H25C | 0.9600 |
Cl1—O11 | 1.390 (7) | C10—C9 | 1.383 (7) |
O6—C3 | 1.358 (7) | C9—H9 | 0.9300 |
O6—C21 | 1.428 (7) | ||
O1—Tb1—O23 | 143.59 (15) | C4—C3—C2 | 119.1 (5) |
O1—Tb1—O22 | 76.61 (15) | C12—C11—C10 | 119.8 (5) |
O23—Tb1—O22 | 75.57 (18) | C12—C11—H11 | 120.1 |
O1—Tb1—O21 | 74.85 (14) | C10—C11—H11 | 120.1 |
O23—Tb1—O21 | 141.50 (17) | O7—C7—C6 | 115.2 (5) |
O22—Tb1—O21 | 132.39 (16) | O7—C7—C2 | 122.2 (5) |
O1—Tb1—O4 | 148.44 (13) | C6—C7—C2 | 122.5 (5) |
O23—Tb1—O4 | 67.93 (16) | C5—C6—C7 | 117.6 (5) |
O22—Tb1—O4 | 127.08 (15) | C5—C6—H6 | 121.2 |
O21—Tb1—O4 | 73.59 (15) | C7—C6—H6 | 121.2 |
O1—Tb1—N1 | 76.60 (15) | O8—C22—C23 | 107.7 (5) |
O23—Tb1—N1 | 72.53 (18) | O8—C22—H22A | 110.2 |
O22—Tb1—N1 | 71.28 (17) | C23—C22—H22A | 110.2 |
O21—Tb1—N1 | 135.07 (15) | O8—C22—H22B | 110.2 |
O4—Tb1—N1 | 127.39 (16) | C23—C22—H22B | 110.2 |
O1—Tb1—O3 | 105.85 (12) | H22A—C22—H22B | 108.5 |
O23—Tb1—O3 | 86.31 (18) | C10—O8—C22 | 117.9 (4) |
O22—Tb1—O3 | 147.85 (15) | C24—N1—Tb1 | 160.0 (6) |
O21—Tb1—O3 | 77.27 (15) | O3—C16—C17 | 108.4 (5) |
O4—Tb1—O3 | 66.29 (13) | O3—C16—H16A | 110.0 |
N1—Tb1—O3 | 78.08 (15) | C17—C16—H16A | 110.0 |
O1—Tb1—O5 | 106.73 (14) | O3—C16—H16B | 110.0 |
O23—Tb1—O5 | 89.00 (19) | C17—C16—H16B | 110.0 |
O22—Tb1—O5 | 76.39 (15) | H16A—C16—H16B | 108.4 |
O21—Tb1—O5 | 76.40 (14) | C3—C4—C5 | 120.3 (6) |
O4—Tb1—O5 | 66.27 (15) | C3—C4—H4 | 119.8 |
N1—Tb1—O5 | 145.78 (16) | C5—C4—H4 | 119.8 |
O3—Tb1—O5 | 130.40 (14) | C6—C5—C4 | 122.3 (6) |
C1—O1—Tb1 | 146.5 (3) | C6—C5—H5 | 118.8 |
Tb1—O21—H21 | 109.5 | C4—C5—H5 | 118.8 |
Tb1—O21—H21C | 117 (5) | N1—C24—C25 | 178.9 (9) |
H21—O21—H21C | 124.8 | O4—C17—C16 | 107.8 (5) |
C16—O3—C15 | 113.1 (4) | O4—C17—H17A | 110.1 |
C16—O3—Tb1 | 115.2 (3) | C16—C17—H17A | 110.1 |
C15—O3—Tb1 | 124.5 (3) | O4—C17—H17B | 110.1 |
C17—O4—C18 | 113.2 (5) | C16—C17—H17B | 110.1 |
C17—O4—Tb1 | 117.7 (3) | H17A—C17—H17B | 108.5 |
C18—O4—Tb1 | 117.8 (4) | C22—C23—H23A | 109.5 |
Tb1—O22—H22 | 109.5 | C22—C23—H23B | 109.5 |
Tb1—O22—H22C | 125 (5) | H23A—C23—H23B | 109.5 |
H22—O22—H22C | 125.5 | C22—C23—H23C | 109.5 |
C19—O5—C20 | 113.0 (5) | H23A—C23—H23C | 109.5 |
C19—O5—Tb1 | 114.3 (4) | H23B—C23—H23C | 109.5 |
C20—O5—Tb1 | 123.9 (4) | O4—C18—C19 | 107.9 (5) |
O19—Cl3—O20 | 107.9 (5) | O4—C18—H18A | 110.1 |
O19—Cl3—O17 | 112.7 (4) | C19—C18—H18A | 110.1 |
O20—Cl3—O17 | 109.5 (4) | O4—C18—H18B | 110.1 |
O19—Cl3—O18 | 109.9 (4) | C19—C18—H18B | 110.1 |
O20—Cl3—O18 | 108.0 (5) | H18A—C18—H18B | 108.4 |
O17—Cl3—O18 | 108.5 (3) | O5—C20—C21 | 112.1 (5) |
C7—O7—C8 | 120.1 (4) | O5—C20—H20A | 109.2 |
C12—O2—C14 | 118.2 (4) | C21—C20—H20A | 109.2 |
Tb1—O23—H23 | 109.5 | O5—C20—H20B | 109.2 |
Tb1—O23—H23D | 118 (9) | C21—C20—H20B | 109.2 |
H23—O23—H23D | 131.4 | H20A—C20—H20B | 107.9 |
O7—C8—C9 | 115.1 (5) | O5—C19—C18 | 108.4 (6) |
O7—C8—C13 | 121.1 (4) | O5—C19—H19A | 110.0 |
C9—C8—C13 | 123.8 (5) | C18—C19—H19A | 110.0 |
O1—C1—C13 | 121.9 (4) | O5—C19—H19B | 110.0 |
O1—C1—C2 | 121.3 (4) | C18—C19—H19B | 110.0 |
C13—C1—C2 | 116.8 (4) | H19A—C19—H19B | 108.4 |
O2—C12—C11 | 123.6 (5) | O6—C21—C20 | 108.9 (5) |
O2—C12—C13 | 116.2 (4) | O6—C21—H21A | 109.9 |
C11—C12—C13 | 120.3 (5) | C20—C21—H21A | 109.9 |
O2—C14—C15 | 107.2 (4) | O6—C21—H21B | 109.9 |
O2—C14—H14A | 110.3 | C20—C21—H21B | 109.9 |
C15—C14—H14A | 110.3 | H21A—C21—H21B | 108.3 |
O2—C14—H14B | 110.3 | O15—Cl2—O14 | 114.5 (5) |
C15—C14—H14B | 110.3 | O15—Cl2—O13 | 113.5 (6) |
H14A—C14—H14B | 108.5 | O14—Cl2—O13 | 109.1 (4) |
O3—C15—C14 | 109.9 (5) | O15—Cl2—O16 | 103.4 (7) |
O3—C15—H15A | 109.7 | O14—Cl2—O16 | 108.8 (7) |
C14—C15—H15A | 109.7 | O13—Cl2—O16 | 107.0 (7) |
O3—C15—H15B | 109.7 | C24—C25—H25A | 109.5 |
C14—C15—H15B | 109.7 | C24—C25—H25B | 109.5 |
H15A—C15—H15B | 108.2 | H25A—C25—H25B | 109.5 |
O12—Cl1—O10 | 108.5 (8) | C24—C25—H25C | 109.5 |
O12—Cl1—O9 | 111.7 (5) | H25A—C25—H25C | 109.5 |
O10—Cl1—O9 | 111.1 (5) | H25B—C25—H25C | 109.5 |
O12—Cl1—O11 | 104.9 (7) | C8—C13—C12 | 116.8 (4) |
O10—Cl1—O11 | 112.4 (6) | C8—C13—C1 | 119.5 (4) |
O9—Cl1—O11 | 108.1 (4) | C12—C13—C1 | 123.7 (4) |
C3—O6—C21 | 118.6 (5) | O8—C10—C9 | 123.4 (5) |
C7—C2—C3 | 118.0 (5) | O8—C10—C11 | 114.8 (5) |
C7—C2—C1 | 118.5 (5) | C9—C10—C11 | 121.8 (5) |
C3—C2—C1 | 123.4 (5) | C8—C9—C10 | 117.4 (5) |
O6—C3—C4 | 124.2 (5) | C8—C9—H9 | 121.3 |
O6—C3—C2 | 116.7 (5) | C10—C9—H9 | 121.3 |
O23—Tb1—O1—C1 | 177.8 (6) | C21—O6—C3—C4 | 18.6 (8) |
O22—Tb1—O1—C1 | −141.2 (6) | C21—O6—C3—C2 | −160.6 (5) |
O21—Tb1—O1—C1 | 0.3 (6) | C7—C2—C3—O6 | 175.7 (4) |
O4—Tb1—O1—C1 | 1.7 (7) | C1—C2—C3—O6 | −6.3 (7) |
N1—Tb1—O1—C1 | 145.2 (6) | C7—C2—C3—C4 | −3.5 (7) |
O3—Tb1—O1—C1 | 72.0 (6) | C1—C2—C3—C4 | 174.5 (5) |
O5—Tb1—O1—C1 | −70.1 (6) | O2—C12—C11—C10 | −177.9 (5) |
O1—Tb1—O3—C16 | −165.1 (4) | C13—C12—C11—C10 | 1.8 (7) |
O23—Tb1—O3—C16 | 49.8 (4) | C8—O7—C7—C6 | −174.9 (4) |
O22—Tb1—O3—C16 | 104.9 (5) | C8—O7—C7—C2 | 6.9 (7) |
O21—Tb1—O3—C16 | −95.1 (4) | C3—C2—C7—O7 | −179.3 (4) |
O4—Tb1—O3—C16 | −17.7 (4) | C1—C2—C7—O7 | 2.5 (7) |
N1—Tb1—O3—C16 | 122.7 (4) | C3—C2—C7—C6 | 2.7 (7) |
O5—Tb1—O3—C16 | −35.7 (5) | C1—C2—C7—C6 | −175.5 (4) |
O1—Tb1—O3—C15 | 46.9 (4) | O7—C7—C6—C5 | −178.0 (5) |
O23—Tb1—O3—C15 | −98.2 (4) | C2—C7—C6—C5 | 0.1 (7) |
O22—Tb1—O3—C15 | −43.1 (5) | C23—C22—O8—C10 | −178.7 (5) |
O21—Tb1—O3—C15 | 116.8 (4) | O1—Tb1—N1—C24 | 78.2 (16) |
O4—Tb1—O3—C15 | −165.7 (4) | O23—Tb1—N1—C24 | −82.3 (16) |
N1—Tb1—O3—C15 | −25.3 (4) | O22—Tb1—N1—C24 | −2.0 (16) |
O5—Tb1—O3—C15 | 176.3 (4) | O21—Tb1—N1—C24 | 129.9 (15) |
O1—Tb1—O4—C17 | 68.2 (5) | O4—Tb1—N1—C24 | −124.9 (15) |
O23—Tb1—O4—C17 | −109.3 (5) | O3—Tb1—N1—C24 | −172.1 (16) |
O22—Tb1—O4—C17 | −159.2 (4) | O5—Tb1—N1—C24 | −22.0 (17) |
O21—Tb1—O4—C17 | 69.6 (4) | C15—O3—C16—C17 | −163.3 (5) |
N1—Tb1—O4—C17 | −65.2 (5) | Tb1—O3—C16—C17 | 45.0 (6) |
O3—Tb1—O4—C17 | −13.4 (4) | O6—C3—C4—C5 | −177.4 (5) |
O5—Tb1—O4—C17 | 151.6 (4) | C2—C3—C4—C5 | 1.7 (8) |
O1—Tb1—O4—C18 | −72.9 (5) | C7—C6—C5—C4 | −2.1 (8) |
O23—Tb1—O4—C18 | 109.6 (5) | C3—C4—C5—C6 | 1.2 (9) |
O22—Tb1—O4—C18 | 59.6 (5) | Tb1—N1—C24—C25 | 74 (53) |
O21—Tb1—O4—C18 | −71.6 (4) | C18—O4—C17—C16 | −176.2 (5) |
N1—Tb1—O4—C18 | 153.7 (4) | Tb1—O4—C17—C16 | 41.0 (6) |
O3—Tb1—O4—C18 | −154.6 (5) | O3—C16—C17—O4 | −54.6 (6) |
O5—Tb1—O4—C18 | 10.5 (4) | C17—O4—C18—C19 | 178.9 (6) |
O1—Tb1—O5—C19 | 167.7 (4) | Tb1—O4—C18—C19 | −38.3 (7) |
O23—Tb1—O5—C19 | −45.7 (5) | C19—O5—C20—C21 | −142.1 (6) |
O22—Tb1—O5—C19 | −121.1 (5) | Tb1—O5—C20—C21 | 72.4 (8) |
O21—Tb1—O5—C19 | 98.4 (5) | C20—O5—C19—C18 | 163.0 (6) |
O4—Tb1—O5—C19 | 20.6 (4) | Tb1—O5—C19—C18 | −48.0 (7) |
N1—Tb1—O5—C19 | −101.6 (5) | O4—C18—C19—O5 | 55.2 (8) |
O3—Tb1—O5—C19 | 38.6 (5) | C3—O6—C21—C20 | 178.7 (5) |
O1—Tb1—O5—C20 | −47.2 (5) | O5—C20—C21—O6 | −50.1 (8) |
O23—Tb1—O5—C20 | 99.5 (5) | O7—C8—C13—C12 | 176.0 (4) |
O22—Tb1—O5—C20 | 24.1 (5) | C9—C8—C13—C12 | −4.9 (7) |
O21—Tb1—O5—C20 | −116.5 (5) | O7—C8—C13—C1 | −5.5 (7) |
O4—Tb1—O5—C20 | 165.7 (5) | C9—C8—C13—C1 | 173.7 (5) |
N1—Tb1—O5—C20 | 43.5 (6) | O2—C12—C13—C8 | −178.6 (4) |
O3—Tb1—O5—C20 | −176.2 (4) | C11—C12—C13—C8 | 1.6 (7) |
C7—O7—C8—C9 | 175.4 (4) | O2—C12—C13—C1 | 2.9 (7) |
C7—O7—C8—C13 | −5.4 (6) | C11—C12—C13—C1 | −176.9 (5) |
Tb1—O1—C1—C13 | −90.6 (7) | O1—C1—C13—C8 | −163.8 (4) |
Tb1—O1—C1—C2 | 91.4 (6) | C2—C1—C13—C8 | 14.3 (6) |
C14—O2—C12—C11 | −14.1 (7) | O1—C1—C13—C12 | 14.6 (7) |
C14—O2—C12—C13 | 166.1 (4) | C2—C1—C13—C12 | −167.2 (4) |
C12—O2—C14—C15 | 178.1 (5) | C22—O8—C10—C9 | 5.7 (7) |
C16—O3—C15—C14 | 134.8 (5) | C22—O8—C10—C11 | −175.9 (5) |
Tb1—O3—C15—C14 | −76.6 (5) | C12—C11—C10—O8 | 179.2 (5) |
O2—C14—C15—O3 | 51.6 (6) | C12—C11—C10—C9 | −2.4 (8) |
O1—C1—C2—C7 | 165.3 (4) | O7—C8—C9—C10 | −176.5 (4) |
C13—C1—C2—C7 | −12.8 (6) | C13—C8—C9—C10 | 4.4 (7) |
O1—C1—C2—C3 | −12.8 (7) | O8—C10—C9—C8 | 177.7 (5) |
C13—C1—C2—C3 | 169.1 (4) | C11—C10—C9—C8 | −0.6 (7) |
Experimental details
Crystal data | |
Chemical formula | [Tb(C2H3N)(C23H26O8)(H2O)3](ClO4)3 |
Mr | 982.81 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 296 |
a, b, c (Å) | 10.2838 (2), 11.7932 (3), 15.4680 (4) |
α, β, γ (°) | 85.933 (1), 84.813 (1), 77.363 (1) |
V (Å3) | 1820.48 (7) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 2.25 |
Crystal size (mm) | 0.25 × 0.21 × 0.15 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector |
Absorption correction | Multi-scan (SADABS; Bruker, 2002) |
Tmin, Tmax | 0.575, 0.713 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 11523, 8058, 6378 |
Rint | 0.019 |
(sin θ/λ)max (Å−1) | 0.651 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.044, 0.113, 1.03 |
No. of reflections | 8058 |
No. of parameters | 495 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.96, −0.85 |
Computer programs: SMART (Bruker, 2002), SAINT (Bruker, 2002), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
Tb1—O1 | 2.210 (3) | Tb1—O4 | 2.442 (4) |
Tb1—O23 | 2.359 (5) | Tb1—N1 | 2.467 (5) |
Tb1—O22 | 2.391 (4) | Tb1—O3 | 2.467 (4) |
Tb1—O21 | 2.412 (4) | Tb1—O5 | 2.477 (4) |
Acknowledgements
The authors acknowledge the NSFC (grant Nos. 20571035, 20601011) for financial support.
References
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The xanthone derivatives show good properties in pharmacology and selectively recognition of guest species. A series of alkali metal and alkaline earth metal complexes derived from xanthone-crown ether have been synthesised and studied as fluorescent sensors. However, the rare earth complexes with novel structure derived from xanthone-crown ether have rarely been reported. Herein, we report the synthesis and structure of the title compound, 3-ethoxy-1,8-(3,6,9-trioxaundecane-1,11-diylioxy)xanthone terbium(III) perchlorate. The Tb3+ is located on one side of the macrocycle and the carbonyl oxygen coordinated to the terbium (Tb1—O1= 2.210 (3) Å) is bent out of the xanthone plane as to increase the coordination space. Tb3+ is eight coordinated by one nitrogen of CH3CN (Tb1—N1= 2.467 (5) Å), three oxygens from three water molecule (Tb1—O21= 2.412 (4) Å, Tb1—O22= 2.391 (4) Å, Tb1—O23= 2.359 (5) Å) and four ligand oxygens (Tb1—O1= 2.210 (3) Å, Tb1—O3= 2.467 (4) Å, Tb1—O4= 2.442 (4) Å, and Tb1—O5= 2.477 (4) Å) (Fig. 1 and Table 1). The selected bond angles around Tb3+ were listed as following: O1—Tb1—O3 = 105.85°, O1—Tb1—O4 = 148.44°, O1—Tb1—O5 = 106.73°, O3—Tb1—O4 = 66.29°, O4—Tb1—O5 = 66.27°, O3—Tb1—O5 = 130.40°, O21—Tb1—O22 = 132.39°, O21—Tb1—O23 = 141.50°, O22—Tb1—O23 = 75.57°. Geometry around terbium is a distorted two-capped trigonal prism.