Chem. J. Chinese Universities ›› 2026, Vol. 47 ›› Issue (8): 20260062.doi: 10.7503/cjcu20260062
• Articles: Inorganic Chemistry • Previous Articles Next Articles
SONG Zhiguo, WANG Xin, ZHU Zhihui, XU Yiminmg, WANG Min(
)
Received:2026-02-02
Online:2026-08-10
Published:2026-05-25
Contact:
WANG Min
E-mail:wangmin@qymail.bhu.edu.cn
Supported by:CLC Number:
TrendMD:
SONG Zhiguo, WANG Xin, ZHU Zhihui, XU Yiminmg, WANG Min. Highly Selective Detection of Fe3+ by Mononuclear Cd(II) Complex Sensor Containing Naphthalene Disulfonic Acid Ligands[J]. Chem. J. Chinese Universities, 2026, 47(8): 20260062.
| Formula | C22H20CdN8O6S2 | μ/mm-1 | 1.050 |
|---|---|---|---|
| Formula weight | 668.98 | F(000) | 1344 |
| Temperature/K | 296.15 | Crystal size | 0.24 mm×0.22 mm×0.20 mm |
| λ/nm | 0.071073 | Theta range/(°) | 2.383—25.096 |
| Crystal system | Monoclinic | Index ranges | -11 ≤ h ≤ 11 |
| Space group | C1c1 | -20 ≤ k ≤ 20 | |
| a/nm | 0.98439(9) | -18 ≤ l ≤ 18 | |
| b/nm | 1.70932(15) | Dc/(Mg·m-3) | 1.701 |
| c/nm | 1.57981(13) | Total reflections | 27807 |
| α/(°) | 90 | Unique reflections | 4633 |
| β/(°) | 100.627(2) | Goodness⁃of⁃fit F2 | 1.089 |
| γ/(°) | 90 | R1, ωR2* | 0.0212, 0.0521 |
| V/nm3 | 2.6127(4) | R1, ωR2(all data)* | 0.0216, 0.0522 |
| Z | 4 | CCDC No. | 2348654 |
Table 1 Crystallographic data for Cd(Im)4(1,5-NDA)2
| Formula | C22H20CdN8O6S2 | μ/mm-1 | 1.050 |
|---|---|---|---|
| Formula weight | 668.98 | F(000) | 1344 |
| Temperature/K | 296.15 | Crystal size | 0.24 mm×0.22 mm×0.20 mm |
| λ/nm | 0.071073 | Theta range/(°) | 2.383—25.096 |
| Crystal system | Monoclinic | Index ranges | -11 ≤ h ≤ 11 |
| Space group | C1c1 | -20 ≤ k ≤ 20 | |
| a/nm | 0.98439(9) | -18 ≤ l ≤ 18 | |
| b/nm | 1.70932(15) | Dc/(Mg·m-3) | 1.701 |
| c/nm | 1.57981(13) | Total reflections | 27807 |
| α/(°) | 90 | Unique reflections | 4633 |
| β/(°) | 100.627(2) | Goodness⁃of⁃fit F2 | 1.089 |
| γ/(°) | 90 | R1, ωR2* | 0.0212, 0.0521 |
| V/nm3 | 2.6127(4) | R1, ωR2(all data)* | 0.0216, 0.0522 |
| Z | 4 | CCDC No. | 2348654 |
| Bond | Experimental | Simulated b | Bond | Experimental | Simulated b |
|---|---|---|---|---|---|
| Cd1—O7 | 0.2456(3) | 0.2462 | O9—Cd1—O7 | 81.10(11) | 82.46 |
| Cd1—O9 | 0.2333(3) | 0.2339 | O9—Cd1—N4 | 162.45(12) | 161.22 |
| Cd1—N1 | 0.2265(3) | 0.2312 | N1—Cd1—N3 | 168.76(13) | 167.07 |
| Cd1—N3 | 0.2295(3) | 0.2358 | N1—Cd1—O9 | 85.14(12) | 84.80 |
| Cd1—N4 | 0.2345(4) | 0.2398 | N2—Cd1—O7 | 177.09(12) | 176.53 |
| Cd1—N2 | 0.2324(3) | 0.2381 | N2—Cd1—O9 | 100.23(13) | 99.23 |
Table 2 Partial bond length(nm) and bond angle(°) of Cd(Im)4(1,5-NDA)2a
| Bond | Experimental | Simulated b | Bond | Experimental | Simulated b |
|---|---|---|---|---|---|
| Cd1—O7 | 0.2456(3) | 0.2462 | O9—Cd1—O7 | 81.10(11) | 82.46 |
| Cd1—O9 | 0.2333(3) | 0.2339 | O9—Cd1—N4 | 162.45(12) | 161.22 |
| Cd1—N1 | 0.2265(3) | 0.2312 | N1—Cd1—N3 | 168.76(13) | 167.07 |
| Cd1—N3 | 0.2295(3) | 0.2358 | N1—Cd1—O9 | 85.14(12) | 84.80 |
| Cd1—N4 | 0.2345(4) | 0.2398 | N2—Cd1—O7 | 177.09(12) | 176.53 |
| Cd1—N2 | 0.2324(3) | 0.2381 | N2—Cd1—O9 | 100.23(13) | 99.23 |
| Fluorescent sensing material | LOD/(μmol·L-1) | Ref. | Fluorescent sensing material | LOD/(μmol·L-1) | Ref. |
|---|---|---|---|---|---|
| [CdL(H2O)(NO3)·H2O] n | 253 | [ | [Cd(LBIX)(HEA)] n | 1.14 | [ |
| [Cd(HDCPN)(1,4⁃bib)0.5(H2O)2] n | 132 | [ | [Cd4(L)4(1,4⁃bib)4]·2DMA | 0.65 | [ |
| [Zn3Eu2(TTHA)2(H2O)6]·6HO | 16.8 | [ | [Mn(na)2(Dmbpy)(H2O)]·Hna | 0.52 | [ |
| [Zn2(cptpy)(btc)(H2O)] n | 9.73 | [ | Cd(Im)4(1,5⁃NDA)2 | 0.46 | This work |
Table 3 Comparison of LOD for Fe3+ detection using different fluorescent sensing materials
| Fluorescent sensing material | LOD/(μmol·L-1) | Ref. | Fluorescent sensing material | LOD/(μmol·L-1) | Ref. |
|---|---|---|---|---|---|
| [CdL(H2O)(NO3)·H2O] n | 253 | [ | [Cd(LBIX)(HEA)] n | 1.14 | [ |
| [Cd(HDCPN)(1,4⁃bib)0.5(H2O)2] n | 132 | [ | [Cd4(L)4(1,4⁃bib)4]·2DMA | 0.65 | [ |
| [Zn3Eu2(TTHA)2(H2O)6]·6HO | 16.8 | [ | [Mn(na)2(Dmbpy)(H2O)]·Hna | 0.52 | [ |
| [Zn2(cptpy)(btc)(H2O)] n | 9.73 | [ | Cd(Im)4(1,5⁃NDA)2 | 0.46 | This work |
| Water sample | Recovery(%) | ||
|---|---|---|---|
| Sea Water | 2.00 | 2.07 | 103.50 |
| 4.00 | 4.12 | 103.00 | |
| 8.00 | 8.15 | 101.88 | |
| Lake Water | 2.00 | 2.04 | 102.00 |
| 4.00 | 4.06 | 101.50 | |
| 8.00 | 8.11 | 101.38 |
Table 4 Determination of Fe3+ in water samples
| Water sample | Recovery(%) | ||
|---|---|---|---|
| Sea Water | 2.00 | 2.07 | 103.50 |
| 4.00 | 4.12 | 103.00 | |
| 8.00 | 8.15 | 101.88 | |
| Lake Water | 2.00 | 2.04 | 102.00 |
| 4.00 | 4.06 | 101.50 | |
| 8.00 | 8.11 | 101.38 |
| Sample | Entry | ICP test value of c(Cd2+)/(mg·L-1) | Fe3+ added amount/(g·L-1) | ICP test value of c(Fe3+)/(g·L-1) |
|---|---|---|---|---|
| I | 1 | 3.92 | — | 0 |
| 2 | 3.94 | — | 0 | |
| 3 | 3.93 | — | 0 | |
| II | 1 | 3.96 | 0.201 | 0.128 |
| 2 | 4.05 | 0.201 | 0.137 | |
| 3 | 4.01 | 0.201 | 0.132 |
Table 5 Concentrations of Cd2+ and Fe3+ in Sample I and Sample II
| Sample | Entry | ICP test value of c(Cd2+)/(mg·L-1) | Fe3+ added amount/(g·L-1) | ICP test value of c(Fe3+)/(g·L-1) |
|---|---|---|---|---|
| I | 1 | 3.92 | — | 0 |
| 2 | 3.94 | — | 0 | |
| 3 | 3.93 | — | 0 | |
| II | 1 | 3.96 | 0.201 | 0.128 |
| 2 | 4.05 | 0.201 | 0.137 | |
| 3 | 4.01 | 0.201 | 0.132 |
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