高等学校化学学报 ›› 2018, Vol. 39 ›› Issue (11): 2363.doi: 10.7503/cjcu20180347
收稿日期:
2018-05-07
出版日期:
2018-11-10
发布日期:
2018-09-29
作者简介:
联系人简介: 李 夏, 女, 博士, 教授, 博士生导师, 主要从事无机配位化学方面的研究. E-mail: 基金资助:
Received:
2018-05-07
Online:
2018-11-10
Published:
2018-09-29
Contact:
LI Xia
E-mail:xiali@cnu.edu.cn
Supported by:
摘要:
选用2-(3'-羧基苯氧基)苯甲酸(2,3'-H2oba)、 1,3-双(4-吡啶基)-丙烷(DPP)和1,4-二(1,2,4-三氮唑-1-)丁烷(BTB)为配体, 采用水热法得到了过渡金属配合物Cd(2,3'-oba)(DPP)(1)和Zn(2,3'-oba)(BTB)0.5(2). 配合物1为二维网状结构, 中心Cd2+的配位环境为{CdO4N2}, 双齿螯合配位的2,3'-oba和单齿桥联配位的DPP将Cd2+连接成Cd2+-2,3'-oba-Cd2+-DPP两条螺旋链. 配合物1由分子间氢键连接并自组装为三维超分子结构. 配合物2为三维框架结构, 中心Zn2+采取五配位的畸变四方锥构型{ZnO4N}. 2,3'-oba配体以双齿螯合与双齿桥联的配位方式连接相邻Zn2+并形成二维网层, BTB分子桥联Zn2+并连接相邻网层进而形成三维结构. 荧光光谱表明配合物1和2分别在437和359 nm存在最大发射, 均来源于配体的π*-π 跃迁. 广谱型农药甲基磺草酮对配合物2的荧光强度具有明显的猝灭作用, 据此配合物2可作为荧光探针检测甲基磺草酮.
中图分类号:
TrendMD:
李铮, 李睿, 李夏. 2-(3'-羧基苯氧基)苯甲酸和含氮配体构筑的过渡金属配合物的合成、 晶体结构及荧光性质. 高等学校化学学报, 2018, 39(11): 2363.
LI Zheng, LI Rui, LI Xia. Synthesis, Crystal Structure and Fluorescent Properties of Transition Metal Complexes Constructed with 2-(3'-Carboxyphenoxy)benzoic Acid and N-Donor Ligands†. Chem. J. Chinese Universities, 2018, 39(11): 2363.
Complex | 1 | 2 |
---|---|---|
Empirical formula | C27H22CdN2O5 | C18H14N3O5Zn |
Formula weight | 566.87 | 417.69 |
Temperature/K | 293(2) | 296(2) |
Crystal system | Monoclinic | Monoclinic |
Space group | P21/c | C2/c |
a/nm | 1.0091(2) | 1.6159(5) |
b/nm | 1.3008(3) | 1.3546(7) |
c/nm | 2.0610(6) | 1.6657(8) |
α/(°) | 90 | 90 |
β/(°) | 116.83(2) | 113.59(2) |
γ/(°) | 90 | 90 |
V/nm3 | 2.4141(10) | 3.3418(31) |
Z | 4 | 8 |
Dc/(Mg·m-3) | 1.560 | 1.660 |
Absorption coefficient/mm-1 | 0.945 | 1.507 |
F(000) | 1144 | 1704 |
Crystal size/mm | 0.44×0.31×0.22 | 0.37×0.33×0.29 |
θ range for data collection/(°) | 3.32—27.63 | 2.89—27.56 |
Limiting indices | -13≤h≤13, -16≤k≤16, -26≤l≤26 | -20≤h≤20, -17≤k≤17, -21≤l≤21 |
Reflections collected | 36889 | 25433 |
Rint | 0.0599 | 0.0849 |
Data/restraints/parameters | 5569/0/316 | 3853/8/244 |
Goodness-of-fit on F2 | 1.015 | 1.026 |
Final R indices [I>2σ(I)] | R1=0.0471, wR2=0.0996 | R1=0.0494, wR2=0.0886 |
R indices(all data) | R1=0.1140, wR2=0.1220 | R1=0.1004, wR2=0.1028 |
CCDC No. | 1437942 | 1817762 |
Table 1 Crystallographic data of complexes 1 and 2
Complex | 1 | 2 |
---|---|---|
Empirical formula | C27H22CdN2O5 | C18H14N3O5Zn |
Formula weight | 566.87 | 417.69 |
Temperature/K | 293(2) | 296(2) |
Crystal system | Monoclinic | Monoclinic |
Space group | P21/c | C2/c |
a/nm | 1.0091(2) | 1.6159(5) |
b/nm | 1.3008(3) | 1.3546(7) |
c/nm | 2.0610(6) | 1.6657(8) |
α/(°) | 90 | 90 |
β/(°) | 116.83(2) | 113.59(2) |
γ/(°) | 90 | 90 |
V/nm3 | 2.4141(10) | 3.3418(31) |
Z | 4 | 8 |
Dc/(Mg·m-3) | 1.560 | 1.660 |
Absorption coefficient/mm-1 | 0.945 | 1.507 |
F(000) | 1144 | 1704 |
Crystal size/mm | 0.44×0.31×0.22 | 0.37×0.33×0.29 |
θ range for data collection/(°) | 3.32—27.63 | 2.89—27.56 |
Limiting indices | -13≤h≤13, -16≤k≤16, -26≤l≤26 | -20≤h≤20, -17≤k≤17, -21≤l≤21 |
Reflections collected | 36889 | 25433 |
Rint | 0.0599 | 0.0849 |
Data/restraints/parameters | 5569/0/316 | 3853/8/244 |
Goodness-of-fit on F2 | 1.015 | 1.026 |
Final R indices [I>2σ(I)] | R1=0.0471, wR2=0.0996 | R1=0.0494, wR2=0.0886 |
R indices(all data) | R1=0.1140, wR2=0.1220 | R1=0.1004, wR2=0.1028 |
CCDC No. | 1437942 | 1817762 |
Cd1—O4 | 0.2291(3) | Cd1—O5 | 0.2352(3) | Cd1—O1A | 0.2326(4) | ||
---|---|---|---|---|---|---|---|
Cd1—N1 | 0.2312(4) | Cd1—N2 | 0.2296(3) | Cd1—O2A | 0.2373(4) | ||
O4—Cd1—N2 | 93.79(13) | O4—Cd1—O2A | 93.50(16) | N1—Cd1—O1A | 85.48(14) | ||
N2—Cd1—N1 | 91.38(13) | N1—Cd1—O2A | 131.47(15) | N2—Cd1—O5 | 134.43(13) | ||
N2—Cd1—O1A | 116.67(17) | O5—Cd1—O2A | 123.62(17) | O1A—Cd1—O5 | 108.88(17) | ||
O4—Cd1—O5 | 55.22(11) | O4—Cd1—N1 | 134.98(13) | N2—Cd1—O2A | 86.60(16) | ||
N1—Cd1—O5 | 90.89(12) | O4—Cd1—O1A | 130.13(17) | O1A—Cd1—O2A | 53.49(14) |
Table 2 Selected bond lengths(nm) and angles(°) for complex 1*
Cd1—O4 | 0.2291(3) | Cd1—O5 | 0.2352(3) | Cd1—O1A | 0.2326(4) | ||
---|---|---|---|---|---|---|---|
Cd1—N1 | 0.2312(4) | Cd1—N2 | 0.2296(3) | Cd1—O2A | 0.2373(4) | ||
O4—Cd1—N2 | 93.79(13) | O4—Cd1—O2A | 93.50(16) | N1—Cd1—O1A | 85.48(14) | ||
N2—Cd1—N1 | 91.38(13) | N1—Cd1—O2A | 131.47(15) | N2—Cd1—O5 | 134.43(13) | ||
N2—Cd1—O1A | 116.67(17) | O5—Cd1—O2A | 123.62(17) | O1A—Cd1—O5 | 108.88(17) | ||
O4—Cd1—O5 | 55.22(11) | O4—Cd1—N1 | 134.98(13) | N2—Cd1—O2A | 86.60(16) | ||
N1—Cd1—O5 | 90.89(12) | O4—Cd1—O1A | 130.13(17) | O1A—Cd1—O2A | 53.49(14) |
Zn1—O3 | 0.1987(2) | Zn1—N3 | 0.2025(2) | Zn1—O4 | 0.2007(2) | ||
---|---|---|---|---|---|---|---|
Zn1—O1 | 0.2002(3) | Zn1—O2 | 0.2303(2) | ||||
O3—Zn1—O1 | 108.62(10) | O4—Zn1—O2 | 144.29(10) | O4—Zn1—N3 | 93.46(9) | ||
O1—Zn1—O4 | 95.22(9) | O3—Zn1—O4 | 117.10(9) | O1—Zn1—O2 | 60.02(10) | ||
O1—Zn1—N3 | 145.90(11) | O3—Zn1—N3 | 96.40(10) | N3—Zn1—O2 | 95.33(10) | ||
O3—Zn1—O2 | 96.21(9) |
Table 3 Selected bond lengths(nm) and angles(°) for complex 2
Zn1—O3 | 0.1987(2) | Zn1—N3 | 0.2025(2) | Zn1—O4 | 0.2007(2) | ||
---|---|---|---|---|---|---|---|
Zn1—O1 | 0.2002(3) | Zn1—O2 | 0.2303(2) | ||||
O3—Zn1—O1 | 108.62(10) | O4—Zn1—O2 | 144.29(10) | O4—Zn1—N3 | 93.46(9) | ||
O1—Zn1—O4 | 95.22(9) | O3—Zn1—O4 | 117.10(9) | O1—Zn1—O2 | 60.02(10) | ||
O1—Zn1—N3 | 145.90(11) | O3—Zn1—N3 | 96.40(10) | N3—Zn1—O2 | 95.33(10) | ||
O3—Zn1—O2 | 96.21(9) |
Fig.1 Coordination environment of Cd(Ⅱ)(A), 2D structure(B), hydrogen bond(C) and 3D structure(D) of complex 1All hydrogen atoms are omitted for clarity; symmetry code: A: x-1, y, z.
Fig.5 Emission spectra(A) and fluorescence intensity at 437 nm(B) of complex 1 in various solventsSolvent from a to j: methanol; water; ethanol; DMF; ethyl acetate; DMSO; chloroform; acetonitrile;dichloromethane; acetone.
Fig.6 Emission spectra(A) and fluorescence intensity at 359 nm(B) of complex 2 in various solventsSolvent from a to j: methanol; water; ethanol; DMF; ethyl acetate; DMSO; chloroform; acetonitrile; dichloromethane; acetone.
Fig.8 Emission spectra and peak intensity(inset) of complex 2 dispersed in methanol containing hymexazol(b), carbendazim(c), tebuconazole(d) and mesotrione(e)a. Blank.
Fig.9 Emission spectra and peak intensity(inset) of complex 2 dispersed in methanol solvent containing mesotrione with various concentrationsc(Mesotrione)/(mol·L-1) for a—j: 0, 2.5×10-7, 5×10-7, 10-6, 2.5×10-6, 5×10-6, 10-5, 2.5×10-5, 5×10-5, 1×10-4.
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