1
|
Madanhire T, Pereira MC, Davids H, Hosten EC, Abrahams A. Lanthanide(III) complexes with N-(2,6-dimethylphenyl)oxamate and 1,10-phenanthroline: Synthesis, characterisation and cytotoxicity against MCF-7, HEC-1A and THP-1 cell lines. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
|
2
|
Asymmetric Dinuclear Lanthanide(III) Complexes from the Use of a Ligand Derived from 2-Acetylpyridine and Picolinoylhydrazide: Synthetic, Structural and Magnetic Studies. Molecules 2020; 25:molecules25143153. [PMID: 32664199 PMCID: PMC7397153 DOI: 10.3390/molecules25143153] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 06/30/2020] [Accepted: 07/05/2020] [Indexed: 11/17/2022] Open
Abstract
A family of four Ln(III) complexes has been synthesized with the general formula [Ln2(NO3)4(L)2(S)] (Ln = Gd, Tb, Er, and S = H2O; 1, 2 and 4, respectively/Ln = Dy, S = MeOH, complex 3), where HL is the flexible ditopic ligand N’-(1-(pyridin-2-yl)ethylidene)pyridine-2-carbohydrazide. The structures of isostructural MeOH/H2O solvates of these complexes were determined by single-crystal X-ray diffraction. The two LnIII ions are doubly bridged by the deprotonated oxygen atoms of two “head-to-head” 2.21011 (Harris notation) L¯ ligands, forming a central, nearly rhombic {LnIII2(μ-OR)2}4+ core. Two bidentate chelating nitrato groups complete a sphenocoronal 10-coordination at one metal ion, while two bidentate chelating nitrato groups and one solvent molecule (H2O or MeOH) complete a spherical capped square antiprismatic 9-coordination at the other. The structures are critically compared with those of other, previously reported metal complexes of HL or L¯. The IR spectra of 1–4 are discussed in terms of the coordination modes of the organic and inorganic ligands involved. The f-f transitions in the solid-state (diffuse reflectance) spectra of the Tb(III), Dy(III), and Er(III) complexes have been fully assigned in the UV/Vis and near-IR regions. Magnetic susceptibility studies in the 1.85–300 K range reveal the presence of weak, intramolecular GdIII∙∙∙GdIII antiferromagnetic exchange interactions in 1 [J/kB = −0.020(6) K based on the spin Hamiltonian Ĥ = −2J(ŜGd1∙ ŜGd2)] and probably weak antiferromagnetic LnIII∙∙∙LnIII exchange interactions in 2–4. Ac susceptibility measurements in zero dc field do not show frequency dependent out-of-phase signals, and this experimental fact is discussed for 3 in terms of the magnetic anisotropy axis for each DyIII center and the oblate electron density of this metal ion. Complexes 3 and 4 are Single-Molecule Magnets (SMMs) and this behavior is optimally observed under external dc fields of 600 and 1000 Oe, respectively. The magnetization relaxation pathways are discussed and a satisfactory fit of the temperature and field dependencies of the relaxation time τ was achieved considering a model that employs Raman, direct, and Orbach relaxation mechanisms.
Collapse
|
3
|
Madanhire T, Davids H, Pereira MC, Hosten EC, Abrahams A. Lanthanide complexes with N-(2,6-dimethylphenyl)oxamate: Synthesis, characterisation and cytotoxicity. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114561] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
|
4
|
Giansiracusa MJ, Al-Badran S, Kostopoulos AK, Whitehead GFS, McInnes EJL, Collison D, Winpenny REP, Chilton NF. Magnetic exchange interactions in symmetric lanthanide dimetallics. Inorg Chem Front 2020. [DOI: 10.1039/d0qi00854k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Multi-frequency EPR spectra and CASSCF-SO calculations on two symmetric homo-dimetallic lanthanide complexes are used to determine the magnetic exchange coupling in the low-lying states.
Collapse
Affiliation(s)
| | - Susan Al-Badran
- Department of Chemistry
- The University of Manchester
- Manchester
- UK
- Chemistry Department
| | | | | | | | - David Collison
- Department of Chemistry
- The University of Manchester
- Manchester
- UK
| | | | | |
Collapse
|
5
|
Coordination and metal ion-mediated transformation of a polydentate ligand containing oxime, hydrazone and picolinoyl functionalities. INORG CHEM COMMUN 2018. [DOI: 10.1016/j.inoche.2018.06.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
6
|
Kelley SP, Rogers RD. Lanthanide complexes with zwitterionic amidoximes stabilized by noncoordinating water molecules. Supramol Chem 2017. [DOI: 10.1080/10610278.2017.1405002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Steven P. Kelley
- Department of Chemistry, The University of Alabama, Tuscaloosa, AL, USA
- Department of Chemistry, McGill University, Montreal, Canada
| | - Robin D. Rogers
- Department of Chemistry, The University of Alabama, Tuscaloosa, AL, USA
- Department of Chemistry, McGill University, Montreal, Canada
- 525 Solutions, Inc., Tuscaloosa, AL, USA
| |
Collapse
|
7
|
Synthesis, spectroscopic, molecular structure, antioxidant, antimicrobial and antitumor behavior of Mn(II), Co(II), Ni(II), Cu(II) and Zn(II) complexes of O 2 N type tridentate chromone-2-carboxaldehyde Schiff's base ligand. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.03.080] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
8
|
Lada ZG, Sanakis Y, Raptopoulou CP, Psycharis V, Perlepes SP, Mitrikas G. Probing the electronic structure of a copper(ii) complex by CW- and pulse-EPR spectroscopy. Dalton Trans 2017. [DOI: 10.1039/c7dt01785e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The electronic structure of a mononuclear octahedral copper(ii) complex has been studied using CW EPR spectroscopy and other advanced methods including Davies ENDOR and HYSCORE (1H and 13C) spectroscopy.
Collapse
Affiliation(s)
- Zoi G. Lada
- Foundation for Research and Technology-Hellas (FORTH)
- Institute of Chemical Engineering Sciences (ICE-HT)
- 26504 Patras
- Greece
- Department of Chemistry
| | - Yiannis Sanakis
- Institute of Nanoscience and Nanotechnology
- NCSR “Demokritos”
- 153 10 Aghia Paraskevi Attikis
- Greece
| | - Catherine P. Raptopoulou
- Institute of Nanoscience and Nanotechnology
- NCSR “Demokritos”
- 153 10 Aghia Paraskevi Attikis
- Greece
| | - Vassilis Psycharis
- Institute of Nanoscience and Nanotechnology
- NCSR “Demokritos”
- 153 10 Aghia Paraskevi Attikis
- Greece
| | - Spyros P. Perlepes
- Foundation for Research and Technology-Hellas (FORTH)
- Institute of Chemical Engineering Sciences (ICE-HT)
- 26504 Patras
- Greece
- Department of Chemistry
| | - George Mitrikas
- Institute of Nanoscience and Nanotechnology
- NCSR “Demokritos”
- 153 10 Aghia Paraskevi Attikis
- Greece
| |
Collapse
|
9
|
Shang Q, Li Y, Yang EC, Zhao XJ. Three Isostructural 4-Sulfophthalate-Based Lanthanide Complexes: Syntheses, Crystal Structures, and Luminescent Properties. Z Anorg Allg Chem 2015. [DOI: 10.1002/zaac.201500275] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
10
|
Feasible synthesis of Cd(II) and Ag(I) complexes with novel secondary carbinol form of di-3-pyridinylmethanone through one-pot in situ method. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.06.034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
11
|
Alaghaz ANMA, Ammar RAA, Koehler G, Wolschann KP, El-Gogary TM. Synthesis, spectral and quantum chemical studies on NO-chelating sulfamonomethoxine-cyclophosph(V)azane and its Er(III) complex. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 128:724-729. [PMID: 24699291 DOI: 10.1016/j.saa.2014.02.061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Revised: 02/10/2014] [Accepted: 02/13/2014] [Indexed: 06/03/2023]
Abstract
Computational studies have been carried out at the DFT-B3LYP/6-31G(d) level of theory on the structural and spectroscopic properties of novel ethane-1,2-diol-dichlorocyclophosph(V)azane of sulfamonomethoxine (L), and its binuclear Er(III) complex. Different tautomers of the ligand were optimized at the ab initio DFT level. Keto-form structure is about 15.8 kcal/mol more stable than the enol form (taking zpe correction into account). Simulated IR frequencies were scaled and compared with that experimentally measured. TD-DFT method was used to compute the UV-VIS spectra which show good agreement with measured electronic spectra. The structures of the novel isolated products are proposed based on elemental analyses, IR, UV-VIS, (1)H NMR, (31)P NMR, SEM, XRD spectra, effective magnetic susceptibility measurements and thermogravimetric analysis (TGA).
Collapse
Affiliation(s)
- Abdel-Nasser M A Alaghaz
- Department of Chemistry, Faculty of Science (Boys), Al-Azhar University, Nasr City, Cairo, Egypt; Department of Chemistry, Faculty of Science, Jazan University, Jazan, Saudi Arabia
| | - Reda A A Ammar
- Department of Chemistry, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Gottfried Koehler
- Max F Perutz Laboratories, University of Vienna, 1030 Vienna, Austria
| | | | - Tarek M El-Gogary
- Department of Chemistry, Faculty of Science, Damietta University, Damietta, Egypt.
| |
Collapse
|
12
|
Al-Mogren MM, Alaghaz ANMA, El-Gogary TM. Spectral and quantum chemical studies on 1,3-bis(N(1)-4-amino-6-methoxypyrimidinebenzenesulfonamide-2,2,4,4-ethane-1,2-dithiol)-2,4-dichlorocyclodiphosph(V)azane and its erbium complex. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 118:481-487. [PMID: 24080579 DOI: 10.1016/j.saa.2013.09.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2013] [Revised: 08/26/2013] [Accepted: 09/02/2013] [Indexed: 06/02/2023]
Abstract
Novel 1,3-bis(N(1)-4-amino-6-methoxypyrimidine-benzenesulfonamide-2,2,4,4-ethane-1,2-dithiol)-2,4-dichlorocyclodiphosph(V)azane (L), was prepared and their coordinating behavior towards the lanthanide ion Er(III) was studied. The structures of the isolated products are proposed based on elemental analyses, IR, UV-VIS., (1)H NMR, (13)C NMR, (31)P NMR, SEM, XRD, mass spectra, effective magnetic susceptibility measurements and thermogravimetric analysis (TGA). Computational studies have been carried out at the DFT-B3LYP/6-31G(d) level of theory on the structural and spectroscopic properties of L and its binuclear Er(III) complex. Different tautomers of the ligand were optimized at the ab initio DFT level. Keto-form structure is about 17.7 kcal/mol more stable than the enol form (taking zpe correction into account). Simulated IR frequencies were scaled and compared with that experimentally measured. TD-DFT method was used to compute the UV-VIS spectra which compared by the measured electronic spectra.
Collapse
Affiliation(s)
- Muneerah M Al-Mogren
- Department of Chemistry, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | | | | |
Collapse
|
13
|
Feng X, Chen JL, Wang LY, Xie SY, Yang S, Huo SZ, Ng SW. A series of homonuclear lanthanide complexes incorporating isonicotinic based carboxylate tectonic and oxalate coligand: structures, luminescent and magnetic properties. CrystEngComm 2014. [DOI: 10.1039/c3ce41674g] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
14
|
Lanthanide coordination polymers based on multi-donor ligand containing pyridine and phthalate moieties: Structures, luminescence and magnetic properties. J SOLID STATE CHEM 2013. [DOI: 10.1016/j.jssc.2013.08.029] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
15
|
Synthesis, spectroscopic, thermal and quantum chemical studies on trivalent erbium NO chelating sulfamonomethoxine–cyclophosph(V)azane complex. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2013.05.058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
16
|
Polyzou CD, Efthymiou CG, Escuer A, Cunha-Silva L, Papatriantafyllopoulou C, Perlepes SP. In search of 3d/4f-metal single-molecule magnets: Nickel(II)/lanthanide(III) coordination clusters. PURE APPL CHEM 2013. [DOI: 10.1351/pac-con-12-09-08] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The importance of 3d/4f-metal cluster chemistry is outlined, and the employment of 2-pyridyl ketone- and 2-pyridyl oxime-based ligands for the preparation of low-nuclearity NiII/LnIII complexes (Ln = lanthanide) is reviewed. The synthetic utility of the “metal complexes as ligands” and “one-pot” approaches is critically discussed. The small nuclearity of the products permits the in-depth analysis of their magnetic properties.
Collapse
Affiliation(s)
| | | | - Albert Escuer
- 3Departament de Quimica Inorgànica and Institut de Nanociéncia i Nanotecnologia, Universitat de Barcelona (IN2 UB), Av. Diagonal 645, 08028 Barcelona, Spain
| | - Luís Cunha-Silva
- 4REQUIMTE and Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
| | | | | |
Collapse
|
17
|
Feng X, Zhou LL, Wang LY, Zhou JG, Shi ZQ, Shang JJ. Two unique lanthanide–organic frameworks based on 1H-2-methyl-4,5-imidazole-dicarboxylate and oxalate: Crystal structure, luminescence and magnetic properties. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2012.09.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
18
|
Feng X, Feng YQ, Liu L, Wang LY, Song HL, Ng SW. A series of Zn-4f heterometallic coordination polymers and a zinc complex containing a flexible mixed donor dicarboxylate ligand. Dalton Trans 2013; 42:7741-54. [DOI: 10.1039/c3dt33002h] [Citation(s) in RCA: 216] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
19
|
Dinuclear lanthanide(III) complexes with large-bite Schiff bases derived from 2,6-diformyl-4-chlorophenol and hydrazides: Synthesis, structural characterization and spectroscopic studies. Polyhedron 2012. [DOI: 10.1016/j.poly.2012.06.025] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
20
|
Feng X, Li SH, Wang LY, Zhao JS, Shi ZQ, Lei PP. A series of lanthanide–organic polymers incorporating ethyl-4,5-imidazole-dicarboxylato and formate coligand: structures, luminescent and magnetic properties. CrystEngComm 2012. [DOI: 10.1039/c2ce06151a] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
21
|
Georgopoulou AN, Efthymiou CG, Papatriantafyllopoulou C, Psycharis V, Raptopoulou CP, Manos M, Tasiopoulos AJ, Escuer A, Perlepes SP. Triangular NiII2LnIII and NiII2YIII complexes derived from di-2-pyridyl ketone: Synthesis, structures and magnetic properties. Polyhedron 2011. [DOI: 10.1016/j.poly.2011.02.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
22
|
|
23
|
Bakker JM, Deacon GB, Forsyth CM, Junk PC, Wiecko M. A Structural Investigation of Trivalent and Divalent Rare Earth Thiocyanate Complexes Synthesised by Redox Transmetallation. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000111] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
24
|
Alan Howie R, de Lima GM, Wardell JL, Wardell SM. Formation and crystal structures of [(alkoxy)bis(pyridin-2-yl)methanolato-N,O,N]tin(IV) complexes. Polyhedron 2010. [DOI: 10.1016/j.poly.2009.10.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
25
|
Feng X, Wang LY, Zhao JS, Liu B, Wang JG, Shi XG. Pyrazole-nitrogen bridged tetranuclear copper(II) cluster with an unprecedented U-like core: Synthesis, crystal structure and magnetic properties. Inorganica Chim Acta 2009. [DOI: 10.1016/j.ica.2009.09.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
26
|
Stamatatos TC, Efthymiou CG, Stoumpos CC, Perlepes SP. Adventures in the Coordination Chemistry of Di‐2‐pyridyl Ketone and Related Ligands: From High‐Spin Molecules and Single‐Molecule Magnets to Coordination Polymers, and from Structural Aesthetics to an Exciting New Reactivity Chemistry of Coordinated Ligands. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900223] [Citation(s) in RCA: 103] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | | | | | - Spyros P. Perlepes
- Department of Chemistry, University of Patras, 26504 Patras, Greece, Fax: +30‐2610‐997118
| |
Collapse
|
27
|
Structural analysis and electronic properties of a homodinuclear erbium(III) complex bridged by the polyazine ligand 2,2′-bipyrimidine. INORG CHEM COMMUN 2009. [DOI: 10.1016/j.inoche.2009.04.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
28
|
An anion-directed unprecedent three-dimensional array with erbium(III) based on the 2,6-pyridinedicarboxylate. INORG CHEM COMMUN 2009. [DOI: 10.1016/j.inoche.2009.02.027] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
29
|
Kusrini E, Adnan R, Saleh MI, Yan LK, Fun HK. Synthesis and structure of dimeric anthracene-9-carboxylato bridged dinuclear erbium(III) complex, [Er(2)(9-AC)(6)(DMF)(2)(H(2)O)(2)]. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2009; 72:884-889. [PMID: 19167268 DOI: 10.1016/j.saa.2008.12.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2008] [Revised: 11/14/2008] [Accepted: 12/08/2008] [Indexed: 05/27/2023]
Abstract
We study the influence of the bulky aromatic rings, e.g. anthracence-9-carboxylic acid (9-ACA) with a large conjugated pi-system on the structure and spectroscopic properties of [Er(2)(9-AC)(6)(DMF)(2)(H(2)O)(2)] complex where 9-AC=anthracence-9-carboxylato and DMF=N,N'-dimethylformamide. The complex has been prepared from the erbium chloride and 9-ACA in the mixture of H(2)O:DMF solution (4:1, v/v) followed by pH adjustment to 6. The complex is crystallized in a monoclinic system with space group P2(1)/n. The two Er(III) ions are double bridged by the deprotonated carboxyl groups of two 9-AC anions (O1 and O1A), forming an eight-coordination number. The chelating bidentate (O,O), chelating-bridging tridentate (O,O,O') and monodentate of 9-AC anions are observed in the dinuclear [Er(2)(9-AC)(6)(DMF)(2)(H(2)O)(2)] complex. The Er-Er distance is 4.015A in the dimeric unit. Intramolecular O-Hcdots, three dots, centeredO and C-Hcdots, three dots, centeredO hydrogen bonds as well as numerous of intermolecular C-Hcdots, three dots, centeredpi interactions between the anthracene rings by edge-to-face interactions linked the dinuclear dimeric units into two-dimensional supramolecular network in a propeller-arrangement. Electronic absorption spectra of the Er(III) complex and its salt were measured. The emission spectrum of the complex is composed of a broad band due to the emission of intraligand pi*-->pi transition from the 9-AC anions and a shoulder peak originating from the 4f-4f emission transition of the Er(III) ions. The complex has a high thermal stability which can be attributed to the effectively increase the rigidity of the 9-AC anions.
Collapse
Affiliation(s)
- Eny Kusrini
- University of Pancasila, Srengseng Sawah, Jagakarsa, Jakarta, Indonesia.
| | | | | | | | | |
Collapse
|
30
|
Domínguez S, Torres J, González-Platas J, Hummert M, Schumann∥ H, Kremer C. Thermodynamic stability and crystal structure of lanthanide complexes with di-2-pyridyl ketone. J COORD CHEM 2008. [DOI: 10.1080/00958970802474797] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- S. Domínguez
- a Facultad de Farmacia, Departamento de Química Inorgánica , Universidad de La Laguna , Tenerife, Spain
| | - J. Torres
- b Facultad de Química , Cátedra de Química Inorgánica, DEC, CC 1157, Montevideo, Uruguay
| | - J. González-Platas
- c Departamento de Física Fundamental II , Servicio de Difracción de Rayos X. Instituto de Bioorgánica “Antonio González”, Universidad de La Laguna , Tenerife, Spain
| | - M. Hummert
- d Arbeitsgruppe Organische Solarzellen (OSOL), Institut für Angewandte Photophysik, Technische Universität Dresden , Germany
| | - H. Schumann∥
- e Institut für Chemie, Technische Universität Berlin, Strasse des 17 Juni, D-10623 , Berlin, Germany
| | - C. Kremer
- b Facultad de Química , Cátedra de Química Inorgánica, DEC, CC 1157, Montevideo, Uruguay
| |
Collapse
|
31
|
Dinuclear lanthanide(III) complexes from the use of di-2-pyridyl ketone: Preparation, structural characterization and spectroscopic studies. Polyhedron 2006. [DOI: 10.1016/j.poly.2006.04.014] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|