Unprecedented Fluorescent Dinuclear CoII and ZnII Coordination Compounds with a Symmetric Bis(salamo)-Like Tetraoxime
Abstract
:1. Introduction
2. Results and Discussion
2.1. Crystal Structures of the Coordination Compounds 1 and 2
2.2. IR Spectra
2.3. Ultraviolet–Visible Spectroscopy (UV-Vis) Spectra
2.4. Fluorescence Spectra
3. Experimental
3.1. Materials and Physical Measurements
3.2. Preparation of Ligand H3L
3.3. Syntheses of the Coordination Compounds 1 and 2
3.4. X-ray Structure Determination of the Coordination Compounds 1 and 2
4. Conclusions
Supplementary Materials
Author Contributions
Acknowledgments
Conflicts of Interest
References
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Sample Availability: Samples of the compounds are available from the authors. |
Coordination Compound 1 | |||||
---|---|---|---|---|---|
Bonds Lengths (Å) | Bonds Lengths (Å) | Bonds Lengths (Å) | |||
Co1-O1 | 1.952(3) | Co2-N3 | 2.060(3) | Co3-O16 | 2.138(3) |
Co1-O8 | 1.961(3) | Co2-O4 | 2.069(3) | Co3-O17 | 2.198(3) |
Co1-N2 | 2.033(3) | Co2-N4 | 2.083(4) | Co4-O15 | 1.917(3) |
Co1-N1 | 2.045(3) | Co3-O12 | 2.021(3) | Co4-O9 | 2.022(3) |
Co1-O4 | 2.071(3) | Co3-N5 | 2.047(4) | Co4-N7 | 2.027(3) |
Co2-O7 | 1.954(3) | Co3-N6 | 2.063(3) | Co4-O12 | 2.086(3) |
Co2-O8 | 1.961(3) | Co3-O9 | 2.074(3) | Co4-N8 | 2.139(3) |
Coordination Compound 2 | |||||
Bonds Lengths (Å) | Bonds Lengths (Å) | Bonds Lengths (Å) | |||
Zn1-O17 | 1.954(5) | Zn2-O16 | 1.951(5) | Zn3-N6 | 2.115(5) |
Zn1-O14 | 2.082(4) | Zn2-N3 | 2.103(6) | Zn3-N5 | 2.103(5) |
Zn1-O15 | 1.978(4) | Zn2-N4 | 2.111(5) | Zn4-O4 | 2.096(4) |
Zn1-N1 | 2.088(6) | Zn3-O4 | 2.047(4) | Zn4-O9 | 1.941(4) |
Zn1-N2 | 2.101(5) | Zn3-O3 | 2.056(4) | Zn4-O3 | 2.027(4) |
Zn2-O14 | 2.057(4) | Zn3-O7 | 2.205(5) | Zn4-N8 | 2.031(5) |
Zn2-O15 | 1.991(5) | Zn3-O8 | 2.138(5) | Zn4-N7 | 2.180(5) |
Coordination Compound 1 | |||||
---|---|---|---|---|---|
D‒X···A | d(D‒X) | d(X···A) | d(D···A) | ∠D‒X···A | Symmetry Code |
C9‒H9A···O13 | 0.97 | 2.44 | 3.231(6) | 138 | |
C10‒H10···O15 | 0.93 | 2.43 | 3.130(5) | 132 | |
C40‒H40A···Br8 | 0.97 | 2.90 | 3.776(6) | 151 | −x,1−y,1−z |
C43‒H43···O7 | 0.93 | 2.60 | 3.477(6) | 158 | |
C49‒H49A···O16 | 0.97 | 2.46 | 3.379(6) | 159 | |
C8‒H8A···Br8 | 0.97 | 3.92 | 3.019(5) | 154 | |
C61‒H61A···Br2 | 0.96 | 2.99 | 3.280(6) | 99 | |
C36‒H36···Br7 | 0.93 | 3.81 | 3.044(5) | 140 | |
C39‒H39B···Br6 | 0.97 | 2.96 | 3.895(5) | 161 | |
Coordination Compound 2 | |||||
D‒X···A | d(D‒X) | d(X···A) | d(D···A) | ∠D‒X···A | Symmetry Code |
C6‒H6···O16 | 0.93 | 2.52 | 3.394(8) | 157 | |
C11‒H11···O16 | 0.93 | 2.57 | 3.439(7) | 156 | |
C22‒H22A···O8 | 0.97 | 2.43 | 3.374(8) | 163 | |
C44‒H44···O9 | 0.93 | 2.40 | 3.070(9) | 129 | |
C55‒H55···O10 | 0.93 | 2.59 | 3.297(9) | 133 | [1−x,1−y,1−z] |
Coordination Compound | ν(C=N) | ν(Ar–O) | ν(Co–O) | ν(Co–N) |
---|---|---|---|---|
H3L | 1611 | 1265 | ||
1 | 1619 | 1258 | 447 | 512 |
2 | 1621 | 1261 | 453 | 519 |
Coordination Compound | 1 | 2 |
---|---|---|
Empirical formula | C63H60Br8Co4N8O17 | C63H60Br8Zn4N8O17 |
Molecular weight | 2076.19 | 2101.95 |
Color | Brown | Bright-yellow |
Crystal size, mm | 0.22 × 0.18 × 0.16 | 0.22 × 0.18 × 0.17 |
Habit | Block-shaped | Block-shaped |
Crystal system | Triclinic | Triclinic |
Space group | P-1 | P-1 |
Unit cell dimension | ||
a, Å | 15.244(2) | 13.4501(6) |
b, Å | 18.674(3) | 18.6963(9) |
c, Å | 21.356(3) | 19.6467(8) |
α, ° | 109.512(4) | 72.7450(10) |
β, ° | 97.335(4) | 72.5280(10) |
γ, ° | 109.429(4) | 88.801(2) |
Volume, Å3 | 5205.4(14) | 4487.9(3) |
Z | 2 | 2 |
Calculated density, mg·m−3 | 1.325 | 1.555 |
Absorption coefficient, mm−1 | 3.747 | 4.675 |
F (000) | 2036 | 2060 |
θ range for data collection, ° | 1.050 to 27.000 | 2.224 to 25.010 |
h/k/l (min, max) | −19, 16/−22, 23/−27, 26 | −11, 15/−22, 21/−23, 23 |
Reflections collected | 37,783 | 32,780 |
Completeness | 96.6% | 99.4% |
Data/restraints/parameters | 22,025/1/909 | 15,711/0/909 |
Final R indices [I > 2σ(I)] | R1 = 0.0438, wR2 = 0.0932 | R1 = 0.0523, wR2 = 0.1353 |
R indices (all data) | R1 = 0.0762, wR2 = 0.0977 | R1 = 0.0888, wR2 = 0.1557 |
Largest diff. peak and hole (e·Å−3) | 1.677, −0.861 | 1.434, −0.914 |
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Zhang, L.-W.; Liu, L.-Z.; Wang, F.; Dong, W.-K. Unprecedented Fluorescent Dinuclear CoII and ZnII Coordination Compounds with a Symmetric Bis(salamo)-Like Tetraoxime. Molecules 2018, 23, 1141. https://doi.org/10.3390/molecules23051141
Zhang L-W, Liu L-Z, Wang F, Dong W-K. Unprecedented Fluorescent Dinuclear CoII and ZnII Coordination Compounds with a Symmetric Bis(salamo)-Like Tetraoxime. Molecules. 2018; 23(5):1141. https://doi.org/10.3390/molecules23051141
Chicago/Turabian StyleZhang, Lin-Wei, Ling-Zhi Liu, Fei Wang, and Wen-Kui Dong. 2018. "Unprecedented Fluorescent Dinuclear CoII and ZnII Coordination Compounds with a Symmetric Bis(salamo)-Like Tetraoxime" Molecules 23, no. 5: 1141. https://doi.org/10.3390/molecules23051141