Journal of Synthetic Crystals ›› 2025, Vol. 54 ›› Issue (12): 2156-2163.DOI: 10.16553/j.cnki.issn1000-985x.2025.0149
• Research Articles • Previous Articles Next Articles
JIANG Min(
), XIONG Zihan, ZHANG Tong, YANG Yuru, LI Huiru, LIU Yan, ZHAO Xia
Received:2025-07-14
Online:2025-12-20
Published:2026-01-04
CLC Number:
JIANG Min, XIONG Zihan, ZHANG Tong, YANG Yuru, LI Huiru, LIU Yan, ZHAO Xia. Synthesis, Crystal Structure of the Novel Acylthiourea CCT and Its Interaction Study with Calf Thymus DNA[J]. Journal of Synthetic Crystals, 2025, 54(12): 2156-2163.
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Crystal system | Monoclinic | Formula | C15H11ClN2O3S |
Space group Mr a/Å | P21/c 334.77 12.860 8(6) | Dc/(g·cm-3) μ/cm-1 θ range/(°) | 1.570 0.431 3.17 to 51.388 |
| b/Å | 7.551 6(3) | F(000) | 688.0 |
| c/Å | 14.603 1(6) | R collected, unique (Rint) | 15 625 |
| V/Å3 | 1 416.37(10) | GOF | 1.080 |
| α/(°) | 90 | R1, ωR2 [I>2σ(I)] | 0.035 3,0.091 0 |
| β/(°) | 92.950(1) | R1, ωR2 (all data) | 0.037 0,0.092 2 |
γ/(°) Z | 90 4 | L diff. peak and hole/ (e·nm-3) | 0.29/-0.38 |
Table 1 Structural refinement and data of CCT crystals
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Crystal system | Monoclinic | Formula | C15H11ClN2O3S |
Space group Mr a/Å | P21/c 334.77 12.860 8(6) | Dc/(g·cm-3) μ/cm-1 θ range/(°) | 1.570 0.431 3.17 to 51.388 |
| b/Å | 7.551 6(3) | F(000) | 688.0 |
| c/Å | 14.603 1(6) | R collected, unique (Rint) | 15 625 |
| V/Å3 | 1 416.37(10) | GOF | 1.080 |
| α/(°) | 90 | R1, ωR2 [I>2σ(I)] | 0.035 3,0.091 0 |
| β/(°) | 92.950(1) | R1, ωR2 (all data) | 0.037 0,0.092 2 |
γ/(°) Z | 90 4 | L diff. peak and hole/ (e·nm-3) | 0.29/-0.38 |
| Bond | Bond length/Å | Bond | Bond length/Å |
|---|---|---|---|
| C(8)—S(1) | 1.659 8(16) | C(8)—N(2) | 1.403(2) |
| C(4)—Cl(1) | 1.742 0(17) | C(9)—N(2) | 1.421 2(19) |
| C(15)—O(2) | 1.233 9(19) | C(8)—N(1) | 1.403(2) |
| C(7)—O(1) | 1.220 2(19) | C(7)—N(1) | 1.375(2) |
| Bond | Angle/(°) | Bond | Angle/(°) |
| C(8)—N(2)—C(9) | 125.74(13) | N(1)—C(7)—C(6) | 116.26(13) |
| C(7)—N(1)—C(8) | 129.46(13) | C(10)—C(9)—N(2) | 119.58(14) |
| N(2)—C(8)—S(1) | 127.78(12) | O(2)—C(15)—O(3) | 122.28(15) |
| N(2)—C(8)—N(1) | 114.75(13) | N(1)—C(8)—S(1) | 117.43(11) |
Table 2 Bond length and bond angle of CCT crystals
| Bond | Bond length/Å | Bond | Bond length/Å |
|---|---|---|---|
| C(8)—S(1) | 1.659 8(16) | C(8)—N(2) | 1.403(2) |
| C(4)—Cl(1) | 1.742 0(17) | C(9)—N(2) | 1.421 2(19) |
| C(15)—O(2) | 1.233 9(19) | C(8)—N(1) | 1.403(2) |
| C(7)—O(1) | 1.220 2(19) | C(7)—N(1) | 1.375(2) |
| Bond | Angle/(°) | Bond | Angle/(°) |
| C(8)—N(2)—C(9) | 125.74(13) | N(1)—C(7)—C(6) | 116.26(13) |
| C(7)—N(1)—C(8) | 129.46(13) | C(10)—C(9)—N(2) | 119.58(14) |
| N(2)—C(8)—S(1) | 127.78(12) | O(2)—C(15)—O(3) | 122.28(15) |
| N(2)—C(8)—N(1) | 114.75(13) | N(1)—C(8)—S(1) | 117.43(11) |
| D—H…A | d(D—H)/Å | d(H…A)/Å | d(D…A)/Å | ∠(D—H…A)/(°) |
|---|---|---|---|---|
N(2)—H(1)—O(1) N(2)—H(1)—O(2) | 0.880 0.880 | 1.954 2.318 | 2.661 2.705 | 136.284 106.674 |
Table 3 O—H…O hydrogen bonding interactions in CCT
| D—H…A | d(D—H)/Å | d(H…A)/Å | d(D…A)/Å | ∠(D—H…A)/(°) |
|---|---|---|---|---|
N(2)—H(1)—O(1) N(2)—H(1)—O(2) | 0.880 0.880 | 1.954 2.318 | 2.661 2.705 | 136.284 106.674 |
Fig.6 UV-Vis spectra of the interaction between different amounts of CCT and CT-DNA, and linear relationship between CCCT and absorbance at 260 nm (inside image)
| Temperature/℃ | KSV/(L·mol-1) | Kq/(L·mol-1·s-1) | Ka/(L·mol-1) | n |
|---|---|---|---|---|
| 25 | 1.15×105 | 1.15×1013 | 1.10×105 | 1.02 |
| 30 | 1.00×105 | 1.00×1013 | 1.00×105 | 1.16 |
| 35 | 8.31×104 | 8.31×1012 | 5.16×104 | 1.32 |
Table 4 Changes in quenching constant (KSV), rate constants (Kq), binding constant (Ka) and binding sites (n) of CT-DNA on CCT at three different temperatures
| Temperature/℃ | KSV/(L·mol-1) | Kq/(L·mol-1·s-1) | Ka/(L·mol-1) | n |
|---|---|---|---|---|
| 25 | 1.15×105 | 1.15×1013 | 1.10×105 | 1.02 |
| 30 | 1.00×105 | 1.00×1013 | 1.00×105 | 1.16 |
| 35 | 8.31×104 | 8.31×1012 | 5.16×104 | 1.32 |
| Temperature/K | ΔH/(kJ·mol-1) | ΔS/(kJ·mol-1·K-1) | ΔG/(kJ·mol-1) |
|---|---|---|---|
| 298 | -57.95 | -0.097 | -29.04 |
| 303 | -28.56 | ||
| 308 | -28.07 |
Table 5 Thermodynamic parameters of CCT DNA interaction at three different temperatures
| Temperature/K | ΔH/(kJ·mol-1) | ΔS/(kJ·mol-1·K-1) | ΔG/(kJ·mol-1) |
|---|---|---|---|
| 298 | -57.95 | -0.097 | -29.04 |
| 303 | -28.56 | ||
| 308 | -28.07 |
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