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Articoli di riviste sul tema "Ligand field theory"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 28 luglio 2024

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1

Ballhausen, C. J. "Crystal and ligand field theory." International Journal of Quantum Chemistry 5, S5 (June 18, 2009): 373–77. http://dx.doi.org/10.1002/qua.560050844.

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2

Daul, Claude A. "Ligand Field Theory: An ever-modern theory." Journal of Physics: Conference Series 428 (April 5, 2013): 012023. http://dx.doi.org/10.1088/1742-6596/428/1/012023.

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3

Tatarchuk, T. R., H. O. Sirenko, and U. L. Kush. "The Solution of Applied Problems of Complex Compounds with the d-Elements Central Atoms Surrounded by Octahedral Ligand Based on the Theory of Crystal Field." Фізика і хімія твердого тіла 16, no. 1 (March 15, 2015): 145–54. http://dx.doi.org/10.15330/pcss.16.1.145-154.

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The crystal field theory as applied to complex compounds of d-elements surrounded by octahedral ligans was described. Ligand field causes the splitting of d-orbitals, which is characterized by the energy splitting Δo. The spectrochemical series of ligands and examples of high-spin and low-spin complex compounds depending on the degree of force field were presented. Deformation of octahedral complexes by the Jahn-Teller effect was described. It shows the calculation of gains power as a result of complex formation, called the crystal field stabilization energy (CFSE) depending on the electronic

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4

Sastri, V. S., J. R. Perumareddi, M. Lashgari, and M. Elboujdaini. "Application of Ligand Field Theory in Corrosion Inhibition." CORROSION 64, no. 4 (April 2008): 283–88. http://dx.doi.org/10.5006/1.3278472.

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5

Kutzelnigg, Werner. "Hans Bethe (1906-2005) and Ligand Field Theory." Angewandte Chemie International Edition 44, no. 25 (June 20, 2005): 3800–3801. http://dx.doi.org/10.1002/anie.200501634.

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6

Johnson, Brian J., and Kate J. Graham. "A Guided Inquiry Activity for Teaching Ligand Field Theory." Journal of Chemical Education 92, no. 8 (June 17, 2015): 1369–72. http://dx.doi.org/10.1021/acs.jchemed.5b00019.

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7

Sambe, Hideo, та Ronald H. Felton. "Connection between the Xα method and ligand field theory". International Journal of Quantum Chemistry 10, S10 (18 червня 2009): 155–58. http://dx.doi.org/10.1002/qua.560100816.

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8

Schäffer, Claus E., and Jesper Bendix. "Kohn–Sham DFT and ligand-field theory — Is there a synergy?" Canadian Journal of Chemistry 87, no. 10 (October 2009): 1302–12. http://dx.doi.org/10.1139/v09-061.

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In forming electronic states of the partially filled shell of transition-metal atomic and molecular systems, real, symmetry-based, fixed, Kohn–Sham eigenorbitals can be used to bridge KS-states with strong-field, ligand-field states. Thereby, DFT computations, restrained by the use of these frozen orbitals of the so-called average-of-configuration type, allow a central-field modeling of the partially filled shell whose Hamiltonian matrix consists of mutually orthogonal diagonal and non-diagonal parts, of which only the former can be computed. Mutually orthogonal operators of ligand-field theor

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9

Lang, Lucas, Mihail Atanasov, and Frank Neese. "Improvement of Ab Initio Ligand Field Theory by Means of Multistate Perturbation Theory." Journal of Physical Chemistry A 124, no. 5 (January 24, 2020): 1025–37. http://dx.doi.org/10.1021/acs.jpca.9b11227.

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10

Wissing, K., and J. Degen. "Dynamic ligand-field theory for square planar transition metal complexes." Journal of Molecular Structure: THEOCHEM 431, no. 1-2 (April 1998): 97–107. http://dx.doi.org/10.1016/s0166-1280(97)00433-8.

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11

Dong-Ping, Ma, and Chen Ju-Rong. "Improved Ligand-Field Theory with Effect of Electron-Phonon Interaction." Communications in Theoretical Physics 43, no. 3 (March 2005): 529–38. http://dx.doi.org/10.1088/0253-6102/43/3/032.

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12

Gatteschi, D., L. Sorace, R. Sessoli, and A. L. Barra. "High-frequency EPR: An occasion for revisiting ligand field theory." Applied Magnetic Resonance 21, no. 3-4 (December 2001): 299–310. http://dx.doi.org/10.1007/bf03162409.

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13

Toader, Ana Maria, Maria Cristina Buta, Fanica Cimpoesu, and Adela Mihai. "The Holohedrization Effect in Ligand Field Models." Symmetry 16, no. 1 (December 23, 2023): 22. http://dx.doi.org/10.3390/sym16010022.

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Abstract (sommario):

The ligand field theory is an early and yet perennial class of quantum models accounting for the optical and magnetic properties of metal ions as a function of their environment in compounds. In the context of modern quantum chemistry, in order to predict properties from first principles, the ligand field paradigm can serve to illuminate the black box of heavy calculations, extracting heuristic meaning and causal roots. The genuine ligand field models are tacitly affected by an artificial feature, so-called holohedrization. It induces an inversion symmetry, even in cases where the local geomet

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14

Ramanantoanina, Harry, Werner Urland, Amador García-Fuente, Fanica Cimpoesu, and Claude Daul. "Ligand field density functional theory for the prediction of future domestic lighting." Phys. Chem. Chem. Phys. 16, no. 28 (2014): 14625–34. http://dx.doi.org/10.1039/c3cp55521f.

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15

Moore, D. J., and G. E. Stedman. "Effects of time-odd electron-phonon coupling in ligand field theory." Journal of Physics: Condensed Matter 2, no. 11 (March 19, 1990): 2559–77. http://dx.doi.org/10.1088/0953-8984/2/11/005.

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16

Hassan, M. A., M. Farouk, A. H. Abdullah, I. Kashef, and M. M. ElOkr. "ESR and ligand field theory studies of Nd2O3 doped borochoromate glasses." Journal of Alloys and Compounds 539 (October 2012): 233–36. http://dx.doi.org/10.1016/j.jallcom.2012.06.060.

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17

Turner, John F. C. "Ligand Field Theory and Its Applications (Figgis, Brian N.; Hitchman, Michael A.)." Journal of Chemical Education 79, no. 9 (September 2002): 1072. http://dx.doi.org/10.1021/ed079p1072.2.

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18

del Rosal, Iker, Maxime Mercy, Iann C. Gerber, and Romuald Poteau. "Ligand-Field Theory-Based Analysis of the Adsorption Properties of Ruthenium Nanoparticles." ACS Nano 7, no. 11 (October 9, 2013): 9823–35. http://dx.doi.org/10.1021/nn403364p.

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19

Deeth, Robert J. "Impact on ligand-field theory of the real ground state for CuCl2." Journal of the Chemical Society, Dalton Transactions, no. 7 (1993): 1061. http://dx.doi.org/10.1039/dt9930001061.

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20

Gatteschi, D., L. Sorace, R. Sessoli, and A. L. Barra. "ChemInform Abstract: High-Frequency ESR: An Occasion for Revisiting Ligand Field Theory." ChemInform 33, no. 37 (May 20, 2010): no. http://dx.doi.org/10.1002/chin.200237299.

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21

YANG, KUO, YONG SONG, and JIAN TANG. "THEORETICAL STUDY ON THE ENERGY SPECTRUM AND PRESSURE SHIFTS OF R1 LINE FOR LiNbO3:Cr3+." Modern Physics Letters B 25, no. 17 (July 10, 2011): 1503–10. http://dx.doi.org/10.1142/s0217984911026899.

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Abstract (sommario):

Based on the improved ligand-field theory, the energy levels of spectrum, wavefunctions and crystal-field parameters of LiNbO 3: Cr 3+ at 10 K and normal pressure, have been calculated by diagonalizing the complete d3+ energy matrix (120 × 120) under the strong-field scheme of the ligand-field theory. Furthermore, the values of R1 line of LiNbO 3: Cr 3+ under different pressure have been calculated, which agrees well with the experimental data. At last, the contributions from various crystal-field parameters to the energy levels at normal pressure and the variaton rates of the R1 line shifting

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22

Feng, Wen-Lin. "Theoretical Investigation of the g Factors for Copper (II) Ion in an Orthorhombic Crystal and its Application to (CuCl4)2– Cluster." Zeitschrift für Naturforschung A 65, no. 3 (March 1, 2010): 251–62. http://dx.doi.org/10.1515/zna-2010-0315.

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On the basis of the crystal- and ligand-field theory, the high-order perturbation formulas of the g factors (gx, gy, gz) are established for Cu2+ ions in an orthorhombic tetrahedral field with D2 symmetry, including the central cationic and ligand anionic spin-orbital coupling interactions. By using these formulas, the anisotropic g factors of Cu2+ ion in (CuCl4)2− cluster are calculated. The results are consistent with the experimental values. The calculations show that the contribution from covalency of the central ion and the 3p orbital ligand can not be neglected

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23

Sakiyama, Hiroshi, Rin Kimura, Haruto Oomiya, Ryoji Mitsuhashi, Sho Fujii, Katsuhiko Kanaizuka, Mohd Muddassir, Yuga Tamaki, Eiji Asato, and Makoto Handa. "Relationship between Structure and Zero-Field Splitting of Octahedral Nickel(II) Complexes with a Low-Symmetric Tetradentate Ligand." Magnetochemistry 10, no. 5 (April 24, 2024): 32. http://dx.doi.org/10.3390/magnetochemistry10050032.

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Octahedral nickel(II) complexes are among the simplest systems that exhibit zero-field splitting by having two unpaired electrons. For the purpose of clarifying the relationship between structure and zero-field splitting in a low-symmetric system, distorted octahedral nickel(II) complexes were prepared with a tetradentate ligand, 2-[bis(2-methoxyethyl)aminomethyl]-4-nitrophenolate(1−) [(onp)−]. The complex [Ni(onp)(dmso)(H2O)][BPh4]·2dmso (1) (dmso = dimethyl sulfoxide) was characterized as a bulk sample by IR, elemental analysis, mass spectrometry, electronic spectra, and magnetic properties.

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24

Stoilov, Anton, Borislav Yurukov, and Peter Milanov. "Analysis of docking algorithms by HPC methods generated in bioinformatics studies." ITM Web of Conferences 16 (2018): 02009. http://dx.doi.org/10.1051/itmconf/20181602009.

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High-performance computing (HPC) is an important domain of the computer science field. For more than 30 years, it has allowed finding solutions to problems and enhanced progress in many scientific areas such as bioinformatics and drug design. The binding of small molecule ligands to large protein targets is central to numerous biological processes. The accurate prediction of the binding modes between the ligand and protein (the docking problem) is of fundamental importance in modern structure-based drug design. The interactions between the receptor and ligand are quantum mechanical in nature,

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25

Lazzarini, Ennio. "An attempt to apply ligand field theory to positronium reactions with 3d complexes." RENDICONTI LINCEI 14, no. 1 (March 2003): 5–75. http://dx.doi.org/10.1007/bf02915466.

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26

Hidayat, Yuniawan, Ria Armunanto, and Harno Dwi Pranowo. "QMCF-MD Simulation and NBO Analysis of K(I) Ion in Liquid Ammonia." Indonesian Journal of Chemistry 18, no. 2 (May 30, 2018): 203. http://dx.doi.org/10.22146/ijc.26788.

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Ab initio of Quantum Mechanics Charge Field Molecular Dynamic (QMCF-MD) of K(I) ion in liquid ammonia has been studied. A Hartree-Fock level of theory was coupled with LANL2DZ ECP basis set for K(I) ion and DZP (Dunning) for ammonia. Two regions as first and second solvation shell were observed. In the first solvation shell at distance 3.7 (Å), K(I) ion was coordinated by four to eight ammonia molecules dominated by K(NH3)6+ species. Second shell of solvation was ranging between 3.7 Å to 7.3 Å. Within simulation time of 20 ps, the frequent exchange processes of ligands indicating for a very la

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27

Wachters, A. J. H., and W. C. Nieuwpoort. "Crystal field splitting and born repulsion in KNiF3. Contribution to the panel discussion on ligand field theory." International Journal of Quantum Chemistry 5, S5 (June 18, 2009): 391–96. http://dx.doi.org/10.1002/qua.560050846.

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28

Anthon, Christian, Jesper Bendix, and Claus E. Schäffer. "An Average-of-Configuration Method for Using Kohn−Sham Density Functional Theory in Modeling Ligand-Field Theory†." Inorganic Chemistry 42, no. 13 (June 2003): 4088–97. http://dx.doi.org/10.1021/ic0262233.

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29

Ramanantoanina, Harry, Michał Studniarek, Niéli Daffé, and Jan Dreiser. "Non-empirical calculation of X-ray magnetic circular dichroism in lanthanide compounds." Chemical Communications 55, no. 20 (2019): 2988–91. http://dx.doi.org/10.1039/c8cc09321k.

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30

Mangione, G., M. Sambi, M. V. Nardi, and M. Casarin. "A theoretical study of the L3 pre-edge XAS in Cu(ii) complexes." Phys. Chem. Chem. Phys. 16, no. 37 (2014): 19852–55. http://dx.doi.org/10.1039/c4cp02441a.

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L<sub>2,3</sub> spectra of Cu(ii) complexes have been simulated by means of time dependent DFT. Besides the agreement between theory and experiment, the adopted approach provided further insights into the use of the Cu(ii) L<sub>3</sub>-edge intensity and position to investigate the Cu–ligand symmetry-restricted covalency and the ligand-field strength.

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31

Schäffer, Claus E., Christian Anthon, and Jesper Bendix. "Bridging Kohn - Sham DFT and the Angular Overlap Model. Ligand-Field Parameters and Bond Covalencies in Tetrahedral Complexes." Australian Journal of Chemistry 62, no. 10 (2009): 1271. http://dx.doi.org/10.1071/ch09335.

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Kohn–Sham density functional theory (DFT), constrained by the average-of-configuration computations, allows the valence shell of regular tetrahedral chlorido complexes of a complete series of 3d transition metal ions to be orbitally compared. The concept of classificational parentage provides a handle on the discussion of the energetic ordering of all the valence orbitals and illuminates an almost identical ordering for all the systems. Only the participation of the metal 4s orbital in bonding causes a few minor fluctuations. The partially filled ‘3d’ molecular orbitals sit in an energy window

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32

Chang, Tsu Hsin, and Jeffrey I. Zink. "The .sigma. and .pi. interactions of the carbonyl ligand determined from single-crystal polarized electronic spectroscopy and ligand field theory." Journal of the American Chemical Society 109, no. 3 (February 1987): 692–98. http://dx.doi.org/10.1021/ja00237a009.

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33

Sacher, E. "Ligand-field theory of inductive effects in the photoelectron spectra of transition-metal compounds." Physical Review B 34, no. 8 (October 15, 1986): 5130–35. http://dx.doi.org/10.1103/physrevb.34.5130.

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34

Chan, Yue, Jonathan J. Wylie, Liang Xia, Yong Ren, and Yung-Tsang Chen. "Modelling of particle-laden flow inside nanomaterials." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 472, no. 2192 (August 2016): 20160289. http://dx.doi.org/10.1098/rspa.2016.0289.

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In this paper, we demonstrate the usage of the Nernst–Planck equation in conjunction with mean-field theory to investigate particle-laden flow inside nanomaterials. Most theoretical studies in molecular encapsulation at the nanoscale do not take into account any macroscopic flow fields that are crucial in squeezing molecules into nanostructures. Here, a multi-scale idea is used to address this issue. The macroscopic transport of gas is described by the Nernst–Planck equation, whereas molecular interactions between gases and between the gas and the host material are described using a combinatio

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35

Kang-Cheng and Changhua-Zou. "Modeling SARS-CoV-2 and preventing COVID-19 pandemic." Magna Scientia Advanced Research and Reviews 6, no. 2 (December 30, 2022): 024–33. http://dx.doi.org/10.30574/msarr.2022.6.2.0077.

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Backgrounds: Since December 2019, COVID-19 pandemic has globally killed more than 6.602 millions, infected more than 635.2 millions of people and lasted almost three years, as of 11/22/2022. The pandemic is still killing more than 7,261 and infecting more than 2.259 millions of people per week in the whole world today. We think the rates of the fatality, infection and the long term of the pandemic are related to proliferation characteristics and biological structures of SARS-CoV-2. Methods and Objectives: We apply theories of biology, ligand field, biophysics, biochemistry, virology, classic e

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36

Toader, Ana Maria, Bogdan Frecus, Corneliu Ioan Oprea, and Maria Cristina Buta. "Assessing Quantum Calculation Methods for the Account of Ligand Field in Lanthanide Compounds." Physchem 3, no. 2 (June 16, 2023): 270–89. http://dx.doi.org/10.3390/physchem3020019.

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We obtained thorough insight into the capabilities of various computational methods to account for the ligand field (LF) regime in lanthanide compounds, namely, a weakly perturbed ionic body and quasidegenerate orbital multiplets. The LF version of the angular overlap model (AOM) was considered. We intentionally took very simple idealized systems, the hypothetical [TbF]2+, [TbF2]+ and [Tb(O2NO)]2+, in order to explore the details overlooked in applications on complex realistic systems. We examined the 4f and 5d orbital functions in connection to f–f and f–d transitions in the frame of the two

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37

Padilla, Juan, та William E. Hatfield. "σ and π-interactions of the pyrrolic ligand of sandwich-like lanthanide phthalocyanines determined from magnetic susceptibility and ligand-field theory". Inorganica Chimica Acta 172, № 2 (червень 1990): 241–45. http://dx.doi.org/10.1016/s0020-1693(00)80862-2.

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38

Saureu, Sergi, and Coen de Graaf. "TD-DFT study of the light-induced spin crossover of Fe(iii) complexes." Physical Chemistry Chemical Physics 18, no. 2 (2016): 1233–44. http://dx.doi.org/10.1039/c5cp06620d.

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Two light-induced spin-crossover Fe(iii) compounds have been studied with time-dependent density functional theory (TD-DFT) to investigate the deactivation mechanism and the role of the ligand-field states as intermediates in this process.

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39

Kharwar, Ajit Kumar, Arpan Mondal, and Sanjit Konar. "Field Induced Slow Magnetic Relaxation in a Non Kramers Tb(III) Based Single Chain Magnet." Magnetochemistry 4, no. 4 (December 19, 2018): 59. http://dx.doi.org/10.3390/magnetochemistry4040059.

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Herein, we report a novel Tb(III) single chain magnet with the chemical formulae [Tb(μ-OH2)(phen)(μ-OH)(nb)2]n by using 4-nitrobenzoic acid (Hnb) and 1,10-phenanthroline (phen) as ligand system. The single-crystal X-ray diffraction reveals that 4-nitrobenzoic acid acts as a monodentate ligand, water and hydroxyl ions are the bridging ligand and the phen serves as a bidentate chelating ligand. The static magnetic susceptibility measurement (from 2 K to 300 K) shows ferromagnetic interaction at very low temperature (below 6 K). The alternating current (AC) susceptibility data of the complex show

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40

García-García, Amalia, Andoni Zabala-Lekuona, Ainhoa Goñi-Cárdenas, Javier Cepeda, José M. Seco, Alfonso Salinas-Castillo, Duane Choquesillo-Lazarte, and Antonio Rodríguez-Diéguez. "Magnetic and Luminescent Properties of Isostructural 2D Coordination Polymers Based on 2-Pyrimidinecarboxylate and Lanthanide Ions." Crystals 10, no. 7 (July 2, 2020): 571. http://dx.doi.org/10.3390/cryst10070571.

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A couple of isostructural coordination polymers with the general formula [Ln4(pymca)4(AcO)8]n have been obtained from reactions between pyrimidine-2-carboxylate (pymca) ligand and rare-earth ions (Ln = Dy (1), Nd (2)). These two-dimensional compounds have been characterized and the crystal structures have been solved by single-crystal X-ray diffraction technique, resulting in layers along the bc plane based on pymca and acetate anions that act as bridging ligands between metal atoms. Given that pymca and acetate anions possess carboxylate and hetero-nitrogen groups, it is possible to build a c

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41

Krüger, Peter. "First-Principles Calculation of Ligand Field Parameters for L-Edge Spectra of Transition Metal Sites of Arbitrary Symmetry." Symmetry 15, no. 2 (February 10, 2023): 472. http://dx.doi.org/10.3390/sym15020472.

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Recently we have proposed a simple method for obtaining the parameters of a ligand field multiplet model for L-edge spectra calculations from density functional theory. Here we generalize the method to systems where the metal site has arbitrary point symmetry. The ligand field-induced splitting of the metal d-level becomes a hermitian matrix with cross-terms between the different d-orbitals. The anisotropy of the covalency is fully taken into account and it rescales the electron–electron interaction and the oscillator strength in an orbital-dependent way. We apply the method to polarization-de

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42

Cortes-Llamas, Sara Angelica, José Miguel Velázquez-López, Irma Idalia Rangel-Salas, Morelia Eunice López-Reyes, Alfredo Rosas-Sánchez, Leticia Lozada-Rodríguez, Gabriela De Jesús Soltero-Reynoso, and Saul Gallegos-Castillo. "High- or low-spin complex? A guide to facilitate the selection in Ligand Field Theory." Educación Química 33, no. 1 (January 14, 2022): 41. http://dx.doi.org/10.22201/fq.18708404e.2022.1.78867.

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43

Schäffer, Claus E. "Extension of ligand-field theory to encompass bridged structures. Emphasis on the angular overlap model." Inorganica Chimica Acta 300-302 (April 2000): 1035–76. http://dx.doi.org/10.1016/s0020-1693(99)00599-x.

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44

Lueken, Heiko. "Buchbesprechung: Ligand Field Theory and Its Applications. Von Brain N. Figgis und Michael A. Hitchman." Angewandte Chemie 113, no. 3 (February 2, 2001): 649–50. http://dx.doi.org/10.1002/1521-3757(20010202)113:3<649::aid-ange649>3.0.co;2-#.

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45

Chiu, Ying-Nan. "Crystal-field theory for the Rydberg states of polyatomic molecules." Canadian Journal of Physics 64, no. 7 (July 1, 1986): 782–95. http://dx.doi.org/10.1139/p86-140.

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The potential on a Rydberg electron due to the cluster of atoms near the center of a polyatomic molecule is expanded in powers of spherical harmonics. Nonvanishing potentials in totally symmetric irreducible representations are obtained using the crystal field of the cluster of atoms in D3h, C3v, D4v, C4v, Td, and D2d symmetries. Odd as well as the usual even powers of spherical harmonics are included up to [Formula: see text]. Spectroscopically observable differences in potentials between a planar versus a nonplanar XY3 molecule and among a square planar, pyramidal, tetrahedral, and dihedral

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46

Bahrami, Homayoon, Narges Ostadhosseini, Hamid Reza Shamlouei, and Mansour Zahedi. "Study of six coordinated cobalt(III) oxophlorin with different axial ligands: Optimization of geometry and determining of energy and electronic configuration at various spin states by employing of B3LYP, BV86P and M06-2X methods." Journal of Porphyrins and Phthalocyanines 28, no. 03 (March 2024): 173–91. http://dx.doi.org/10.1142/s1088424624500147.

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The six coordinated CoIIIoxophlorin have been studied with imidazole, pyridine and t-butylcyanide as axial ligands using B3LYP, BV86P and MO6-2X methods. Conversion between two isomers [(L)2CoIII(PO)][Formula: see text] and [(L)2CoIII(PO)][Formula: see text] can be occurred at various spin multiplicities, namely singlet, triplet and quintet states. L is employed to show axial ligand namely, imidazole or pyridine. London forces have a basic role in the stability of the mentioned complexes due to non-specific solvent effects. The latter fact has been obtained using the PCM model. Also, it is spe

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47

Suta, Markus, Fanica Cimpoesu, and Werner Urland. "The angular overlap model of ligand field theory for f elements: An intuitive approach building bridges between theory and experiment." Coordination Chemistry Reviews 441 (August 2021): 213981. http://dx.doi.org/10.1016/j.ccr.2021.213981.

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48

Cheng, Haojin, Brandon Djukic, Hilary A. Jenkins, Serge I. Gorelsky, and Martin T. Lemaire. "Iron(II) complexes containing thiophene-substituted “bispicen” ligands — Spin-crossover, ligand rearrangements, and ferromagnetic interactions." Canadian Journal of Chemistry 88, no. 9 (September 2010): 954–63. http://dx.doi.org/10.1139/v10-086.

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Abstract (sommario):

The synthesis and characterization of three new tetradentate “bispicen-type” ligands containing a substituted thiophene heterocycle are described [2,5-thienyl substituents = H (7), Ph (8), or 2-thienyl (9)]. Iron(II) bis(thiocyanate) coordination complexes containing 7–9 were prepared, and the electronic and variable-temperature magnetic properties of complexes containing 7 (10) and 9 (12) are described. Complex 10 features a gradual and incomplete spin crossover in the solid state, and 12 remains high-spin over the entire temperature range. Complex 11 is extremely unstable and rearranges to a

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49

Deeth, Robert J. "d-orbital energy levels in planar [MIIF4]2−, [MII(NH3)4]2+ and [MII(CN)4]2− complexes: the nature of M–L π bonding and the implications for ligand field theory". Dalton Transactions 49, № 28 (2020): 9641–50. http://dx.doi.org/10.1039/d0dt02022b.

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50

Goswami, Debpriyo, Shanti Gopal Patra, and Debashis Ray. "Magneto-Structural Analysis of Hydroxido-Bridged CuII2 Complexes: Density Functional Theory and Other Treatments." Magnetochemistry 9, no. 6 (June 10, 2023): 154. http://dx.doi.org/10.3390/magnetochemistry9060154.

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Abstract (sommario):

A selection of dimeric Cu(II) complexes with bidentate N,N′ ligands with the general formula [Cu(L)(X)(μ-OH)]2·nH2O and [Cu(L)(μ-OH)]2X2·nH2O were magneto-structurally analyzed using the Density Functional Theory (DFT). A Broken Symmetry-Density Functional Theory (BS-DFT) study was undertaken for these complexes with relevant decomposition schemes that gave insight into the effect of the nature of the ligand and coordination environment on the DFT-predicted coupling constants (J). The impact of the spin population, which correlates well with the Cu-O-Cu bridging angles and the calculated coupl

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