Heterometallic ZnII–LnIII–ZnII Schiff Base Complexes with Linear or Bent Conformation—Synthesis, Crystal Structures, Luminescent and Magnetic Characterization
Abstract
:1. Introduction
2. Results
2.1. Crystal Structure
2.2. Luminescent Properties
2.3. Magnetic Properties
3. Materials and Methods
3.1. Materials
3.2. Synthesis of the H3L
3.3. Synthesis of the ZnII–LnIII–ZnII Complexes
3.3.1. [Zn2Nd(ac)2(HL)2]NO3·3H2O (1)
3.3.2. [Zn2Sm(ac)2(HL)2]NO3·3CH3OH·0.3H2O (2)
3.3.3. [Zn2Eu(ac)2(HL)2]NO3·5.33H2O (3)
3.3.4. [Zn2Tb(ac)2(HL)2]NO3·5.33H2O (4)
3.3.5. [Zn2Dy(ac)2(HL)2]NO3·5.33H2O (5)
3.4. Methods
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Conflicts of Interest
References
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Sample Availability: Samples of the compounds 1–5 are available from the authors. |
Parameter. | 1 | 2 | Parameter | 3 | 4 | 5 |
---|---|---|---|---|---|---|
Ln1–Zn1 | 3.513(1) | 3.5268(7) | Ln1–Zn1 | 3.458(1) | 3.4242(9) | 3.414(1) |
Ln1–Zn2 | 3.556(1) | 3.4915(7) | Ln1–O1 | 2.354(5) | 2.330(5) | 2.367(4) |
Ln1–O1 | 2.472(5) | 2.414(3) | Ln1–O2 | 2.409(5) | 2.386(5) | 2.303(4) |
Ln1–O2 | 2.442(5) | 2.414(3) | Ln1–O3 | 2.637(6) | 2.649(5) | 2.879(4) |
Ln1–O3 | 2.825(6) | 2.650(4) | Ln1–O4 | 2.856(5) | 2.905(5) | 2.612(5) |
Ln1–O4 | 2.729(6) | 2.704(3) | Ln1–O7 | 2.375(5) | 2.345(5) | 2.324(4) |
Ln1–O6 | 2.442(5) | 2.412(3) | Zn1–O1 | 2.056(6) | 2.064(5) | 2.094(4) |
Ln1–O7 | 2.457(5) | 2.440(3) | Zn1–O2 | 2.082(5) | 2.089(5) | 2.054(5) |
Ln1–O8 | 2.671(5) | 2.689(4) | Zn1–O6 | 1.997(6) | 2.001(5) | 1.988(5) |
Ln1–O9 | 2.730(6) | 2.803(4) | Zn1–N1 | 2.082(7) | 2.083(7) | 2.034(6) |
Ln1–O12 | 2.437(6) | 2.369(4) | Zn1–N2 | 2.035(7) | 2.049(7) | 2.092(6) |
Ln1–O13 | 2.384(6) | 2.407(4) | Zn1–O1–Ln1 | 103.0(1) | 102.2(2) | 103.0(2) |
Zn1–O1 | 2.067(5) | 2.063(3) | Zn1–O2–Ln1 | 100.4(1) | 99.6(2) | 99.7(2) |
Zn1–O2 | 2.044(5) | 2.077(3) | Δ b (Zn1) | 0.48 | 0.49 | 0.48 |
Zn1–O11 | 1.996(6) | 2.005(4) | σc (Zn1) | 35.5 | 36.0 | 34.9 |
Zn1–N1 | 2.022(8) | 2.075(4) | ωd | 62.4(4) | 61.6(3) | 62.2(2) |
Zn1–N2 | 2.084(7) | 2.069(4) | εe | 62.0(3) | 61.3(4) | 62.0(3) |
Zn2–O6 | 2.064(5) | 2.059(4) | φf | 173.3(2) | 172.8(1) | 172.9(1) |
Zn2–O7 | 2.068(5) | 2.077(3) | ||||
Zn2–O14 | 2.009(6) | 1.993(4) | ||||
Zn2–N3 | 2.052(8) | 2.079(5) | ||||
Zn2–N4 | 2.074(6) | 2.050(4) | ||||
Zn1–O1–Ln1 | 101.1(2) | 103.7(1) | ||||
Zn1–O2–Ln1 | 102.7(2) | 103.3(1) | ||||
Zn2–O6–Ln1 | 103.9(2) | 102.4(1) | ||||
Zn2–O7–Ln1 | 103.3(2) | 100.9(1) | ||||
Δ b (Zn1; Zn2) | 0.46; 0.50 | 0.51; 0.49 | ||||
σc (Zn1; Zn2) | 34.7; 34.8 | 34.5; 35.7 | ||||
ωd | 36.2(4) | 34.6 (3) | ||||
εe | 42.6(4) | 42.1(3) | ||||
φf | 178.8(1) | 178.8(3) |
Compound | λabs a (nm) | λex/λem a (nm) | λex/λem b (nm) |
---|---|---|---|
H3L | 229.0; 292.5; 341.5; 425.5 | 337/414.0 | 363/541.0 |
1 | 235.5; 267.0; 358.5 | 359/421.0 | 357/457.0 |
2 | 235.5; 268.0; 359.5 | 359/458.0; 561.0; 598.0; 644.0 | 357/460.0; 561.0; 598.0; 644.0 |
3 | 234.5; 267.5. 359.0 | 359/458.0 | 357/461.0 |
4 | 236.0. 267.0; 359.0 | 359/424.0 | 357/507.0 |
5 | 234.0; 267.5; 359.5 | 359/430.0 | 357/519.0 |
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Miroslaw, B.; Cristóvão, B.; Hnatejko, Z. Heterometallic ZnII–LnIII–ZnII Schiff Base Complexes with Linear or Bent Conformation—Synthesis, Crystal Structures, Luminescent and Magnetic Characterization. Molecules 2018, 23, 1761. https://doi.org/10.3390/molecules23071761
Miroslaw B, Cristóvão B, Hnatejko Z. Heterometallic ZnII–LnIII–ZnII Schiff Base Complexes with Linear or Bent Conformation—Synthesis, Crystal Structures, Luminescent and Magnetic Characterization. Molecules. 2018; 23(7):1761. https://doi.org/10.3390/molecules23071761
Chicago/Turabian StyleMiroslaw, Barbara, Beata Cristóvão, and Zbigniew Hnatejko. 2018. "Heterometallic ZnII–LnIII–ZnII Schiff Base Complexes with Linear or Bent Conformation—Synthesis, Crystal Structures, Luminescent and Magnetic Characterization" Molecules 23, no. 7: 1761. https://doi.org/10.3390/molecules23071761