1
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Dragancea D, Novitchi G, Madalan AM, Alexandru MG, Shova S, Andruh M. Trinuclear cyanido-bridged MII-WV complexes (M = Mn, Co): crystal structures and magnetic properties. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115839] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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2
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Hodorowicz M, Jurowska A, Szklarzewicz J. Unusual structural changes going from Li + to Cs + in [W(CN) 6(bpy)] 2− ion salts: the Na + case. CrystEngComm 2021. [DOI: 10.1039/d1ce00328c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two sodium salts with the [W(CN)6(bpy)]2− ion were synthesized and compared to Li+, K+, Rb+ and Cs+ structures. The comparison of molecular packing, inter- and intra-molecular interactions and cation properties is discussed.
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Affiliation(s)
| | - Anna Jurowska
- Faculty of Chemistry
- Jagiellonian University
- 30-387 Kraków
- Poland
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3
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Qian J, Yoshikawa H, Hu J, Humphrey MG, Zhang J, Awaga K, Zhang C. Auxiliary ligand-induced structural diversities of octacyanometalate-based heterobimetallic coordination polymers towards diverse magnetic properties. Dalton Trans 2019; 48:7666-7676. [PMID: 31062810 DOI: 10.1039/c9dt00654k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three octacyanometalate-based bimetallic coordination polymers (CPs), {[μ4-MV(CN)8][Co(DMF)4]2(ClO4)}n (M = W CP-1, Mo CP-2) and {[μ4-WIV(CN)8]Co2(azpy)4}n CP-3, were synthesized in the absence (for CPs 1 and 2) or presence (for CP-3) of auxiliary ligand 4,4'-azopyridine (azpy), respectively. CPs 1 and 2 exhibit the same three-dimensional (3D) polymeric cation frameworks with [ClO4]- as the counterions, while CP-3 displays a porous 3D framework in an unusual 2-nodal (4,6)-connected 4,6T155 topology with point symbol as {42·64}{46·64·7·84}2. Notably is that octacyanometalate [WV(CN)8]3- has been reduced into [WIV(CN)8]4- during the synthetic process of CP-3. The magnetic investigations indicate that CP-1 exhibits the typical ferromagnetic property due to the ferromagnetic coupling between W(v) and Co(ii) spin centers, while CP-3 displays the weak ferromagnetic interaction at low temperature, which is consistent with the valence change of W center in CP-3.
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Affiliation(s)
- Jun Qian
- China-Australia Joint Research Center for Functional Molecular Materials, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China.
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4
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Dey D, Patra M, Al-Hunaiti A, Yadav HR, Al-mherat A, Arar S, Maji M, Choudhury AR, Biswas B. Synthesis, structural characterization and C H activation property of a tetra-iron(III) cluster. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.11.062] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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5
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Alexandru MG, Visinescu D, Shova S, Andruh M, Lloret F, Julve M. Magnetism in Heterobimetallic and Heterotrimetallic Chains Based on the Use of [WV(bipy)(CN)6]-as a Metalloligand. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201701245] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Maria-Gabriela Alexandru
- Department of Inorganic Chemistry, Physical Chemistry and Electrochemistry; Faculty of Applied Chemistry and Materials Science; University Politehnica of Bucharest; 1-7 Gh. Polizu Street 011061 Bucharest Romania
| | - Diana Visinescu
- Coordination and Supramolecular Chemistry Laboratory; “Ilie Murgulescu” Institute of Physical Chemistry; Romanian Academy; Splaiul Independentei 202 060021 Bucharest Romania
| | - Sergiu Shova
- “Petru Poni” Institute of Macromolecular Chemistry of the Romanian Academy; Aleea Grigore Ghica Vodă 41-A 700487 Iasi Romania
| | - Marius Andruh
- Inorganic Chemistry Laboratory; Faculty of Chemistry; University of Bucharest; Str. Dumbrava Rosie 23 020464 Bucharest Romania
| | - Francesc Lloret
- Departament de Química Inorgànica/Instituto de Ciencia Molecular (ICMol); Facultat de Química de la Universitat de València; C/ Catedrático José Beltrán 2 46980 Paterna València Spain
| | - Miguel Julve
- Departament de Química Inorgànica/Instituto de Ciencia Molecular (ICMol); Facultat de Química de la Universitat de València; C/ Catedrático José Beltrán 2 46980 Paterna València Spain
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6
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Nowicka B, Reczyński M, Rams M, Wasiutyński T, Nitek W, Sieklucka B. Ligand dependent topology and spontaneous resolution in high-spin cyano-bridged Ni3W2 clusters. Dalton Trans 2016; 45:12423-31. [PMID: 27431481 DOI: 10.1039/c6dt02119k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Two high-spin pentanuclear NiW clusters with diimine blocking ligands have been obtained: {[Ni(4,4'-MeObpy)2]3[W(CN)8]2}·12H2O (1) and {[Ni(phen)2(H2O)][Ni(phen)2]2[W(CN)8]2}·7H2O (2) (4,4'-MeObpy = 4,4'-dimethoxy-2,2'-bipyridine, phen = 1,10-phenanthroline). Despite the similarity of the building blocks and synthetic conditions the compounds show different topologies of the cluster core: 1 is a trigonal bipyramid while 2 is a decorated square. Both cluster structures are chiral with either ΔΔΔ or ΛΛΛ configuration around all three Ni centres. In 1 spontaneous resolution occurs and it crystallises in the P212121 space group forming a conglomerate containing both types of enantiomorphic crystals. 1Δ and 1Λ are the first pair of enantiomorphic structures of cyano-bridged clusters of trigonal bipyramidal topology obtained with achiral bidentate blocking ligands. 2 crystallises as a racemic compound in a centrosymmetric space group P1[combining macron] with both enantiomers present in the structure. 2 is an exceptional square-motif containing structure with an identical stereoconfiguration of all complex cations within one cluster. Ferromagnetic interactions are present in both clusters resulting in the ground spin state S = 4.
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Affiliation(s)
- Beata Nowicka
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland.
| | - Mateusz Reczyński
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland.
| | - Michał Rams
- Institute of Physics, Jagiellonian University, Łojasiewicza 11, 30-348 Kraków, Poland
| | - Tadeusz Wasiutyński
- Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, 31-342 Kraków, Poland
| | - Wojciech Nitek
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland.
| | - Barbara Sieklucka
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland.
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7
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Qian J, Hu J, Yoshikawa H, Zhang J, Awaga K, Zhang C. External‐Template‐Assisted Formation of Octacyanometalate‐Based M
V
–Mn
II
(M = W, Mo) Bimetallic Coordination Polymers with Magnetic Properties. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201403223] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Jun Qian
- China‐Australia Joint Research Center for Functional Molecular Materials, Scientific Research Academy, Jiangsu University, Zhenjiang 212013, P. R. China, http://chem.jiangnan.edu.cn/index.shtml
- China‐Australia Joint Research Center for Functional Molecular Materials, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, P. R. China
| | - Jingchun Hu
- China‐Australia Joint Research Center for Functional Molecular Materials, Scientific Research Academy, Jiangsu University, Zhenjiang 212013, P. R. China, http://chem.jiangnan.edu.cn/index.shtml
| | - Hirofumi Yoshikawa
- Research Center for Materials Science, Department of Chemistry, Graduate School of Science, Nagoya University, Furo‐cho, Chikusa‐ku, Nagoya 464‐8602, Japan
| | - Jinfang Zhang
- China‐Australia Joint Research Center for Functional Molecular Materials, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, P. R. China
| | - Kunio Awaga
- Research Center for Materials Science, Department of Chemistry, Graduate School of Science, Nagoya University, Furo‐cho, Chikusa‐ku, Nagoya 464‐8602, Japan
| | - Chi Zhang
- China‐Australia Joint Research Center for Functional Molecular Materials, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, P. R. China
- Ningbo Institute of Material Technology & Engineering, Chinese Academy of Sciences, Ningbo 315201, P. R. China
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
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8
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Guo Y, Tang XF, Song Y, Ren XM. Light-induced synthesis of an octacyanometalate-based three-dimensional bimetallic complex [Mn3Mo2]∞. INORG CHEM COMMUN 2014. [DOI: 10.1016/j.inoche.2014.04.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Şenocak A, Karadağ A, Şahin E. Synthesis and Structural Studies of PdII/ZnII Architecture with N,N′-Bis(2-hydroxyethyl)ethylenediamine as Capping Ligand. J Inorg Organomet Polym Mater 2013. [DOI: 10.1007/s10904-013-9861-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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10
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Nowicka B, Korzeniak T, Stefańczyk O, Pinkowicz D, Chorąży S, Podgajny R, Sieklucka B. The impact of ligands upon topology and functionality of octacyanidometallate-based assemblies. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2012.04.008] [Citation(s) in RCA: 133] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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11
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González R, Acosta A, Chiozzone R, Kremer C, Armentano D, De Munno G, Julve M, Lloret F, Faus J. New Family of Thiocyanate-Bridged Re(IV)-SCN-M(II) (M = Ni, Co, Fe, and Mn) Heterobimetallic Compounds: Synthesis, Crystal Structure, and Magnetic Properties. Inorg Chem 2012; 51:5737-47. [DOI: 10.1021/ic300200k] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ricardo González
- Cátedra de Química
Inorgánica, Facultad de Química, Universidad de la República, Avda. General Flores 2124, CC
1157 Montevideo, Uruguay
| | - Alvaro Acosta
- Cátedra de Química
Inorgánica, Facultad de Química, Universidad de la República, Avda. General Flores 2124, CC
1157 Montevideo, Uruguay
| | - Raúl Chiozzone
- Cátedra de Química
Inorgánica, Facultad de Química, Universidad de la República, Avda. General Flores 2124, CC
1157 Montevideo, Uruguay
| | - Carlos Kremer
- Cátedra de Química
Inorgánica, Facultad de Química, Universidad de la República, Avda. General Flores 2124, CC
1157 Montevideo, Uruguay
| | - Donatella Armentano
- Centro di Eccellenza CEMIF.CAL,
Dipartimento di Chimica, Università della Calabria, via P. Bucci 14/c, 87030 Arcavacata di Rende, Cosenza, Italy
| | - Giovanni De Munno
- Centro di Eccellenza CEMIF.CAL,
Dipartimento di Chimica, Università della Calabria, via P. Bucci 14/c, 87030 Arcavacata di Rende, Cosenza, Italy
| | - Miguel Julve
- Departamento de Química
Inorgánica/Instituto de Ciencia Molecular (ICMol), Facultad
de Química, Universidad de València, Avda. Dr. Moliner 50, 46100 Burjassot, Valencia, Spain
| | - Francesc Lloret
- Departamento de Química
Inorgánica/Instituto de Ciencia Molecular (ICMol), Facultad
de Química, Universidad de València, Avda. Dr. Moliner 50, 46100 Burjassot, Valencia, Spain
| | - Juan Faus
- Departamento de Química
Inorgánica/Instituto de Ciencia Molecular (ICMol), Facultad
de Química, Universidad de València, Avda. Dr. Moliner 50, 46100 Burjassot, Valencia, Spain
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12
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Martínez-Lillo J, Mastropietro TF, De Munno G, Lloret F, Julve M, Faus J. Enhancing the magnetic coupling of oxalato-bridged Re(IV)2M(II) (M=Mn, Co, Ni, and Cu) trinuclear complexes via peripheral halide ligand effects. Inorg Chem 2011; 50:5731-9. [PMID: 21612191 DOI: 10.1021/ic200531s] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Four heterotrinuclear Re(IV)(2)M(II) compounds of general formula (NBu(4))(2)[{Re(IV)Br(4)(μ-ox)}(2)M(II)(Him)(2)] [NBu(4)(+) = tetra-n-butylammonium cation, ox = oxalate, Him = imidazole; M = Mn (1), Co (2), Ni (3), and Cu (4)] have been synthesized by using the novel mononuclear complex [Re(IV)Br(4)(ox)](2-) as a ligand toward divalent first-row transition metal ions in the presence of imidazole. Compounds 1-4 are isostructural complexes whose structure contains discrete trinuclear [{Re(IV)Br(4)(μ-ox)}(2)M(II)(Him)(2)](2-) anions and bulky NBu(4)(+) cations. The Re and M atoms are six-coordinated: four peripheral bromo and two oxalate-oxygens (at Re), and two cis-coordinated imidazole molecules and four oxygen atoms from two oxalate ligands (at M), build distorted octahedral surroundings. Two peripheral [ReBr(4)(ox)](2-) units act as bidentate ligands through the oxalate group toward the central [M(II)(Him)(2)] fragment affording the trinuclear entities. The values of the intramolecular Re···M separation are 5.62(1) (1), 5.51(1) (2), 5.46(1) (3), and 5.55(1) Å (4). Magnetic susceptibility measurements on polycrystalline samples of 1-4 in the temperature range of 1.9-300 K show the occurrence of intramolecular antiferro- [J = -1.1 cm(-1) (1)] and ferromagnetic interactions [J = +3.9 (2), +19.7 (3), and +14.4 cm(-1) (4)], the Hamiltonian being defined as Ĥ = -J [Ŝ(M)(Ŝ(Re1) + Ŝ(Re2))]. The larger spin delocalization on the oxalato bridge in 1-4 when compared to the trinuclear Re(IV)(2)M(II) complexes with chloro instead of bromo as peripheral ligands (1'-4') accounts for the strengthening of the magnetic interactions in 1-4 [J = -0.35 (1'), +14.2 (3'), and +7.7 cm(-1) (4')]. An incipient frequency dependence of the out-of-phase ac signals of 3 at very low temperatures is reminiscent of a system with slow relaxation of the magnetization, a phenomenon characteristic of single-molecule magnet behavior.
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Affiliation(s)
- José Martínez-Lillo
- Departament de Química Inorgànica/Instituto de Ciencia Molecular (ICMol), Facultat de Química, Universitat de València, Avenida Dr. Moliner 50, 46100 Burjassot, València, Spain.
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13
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Synthesis and Characterization of New Metal–Organic Frameworks Based on Tetracyanoplatinate(II) and N,N′-bis(2-hydroxyethyl)ethylenediamine: Single Crystal Structures of ZnII and CdII Complexes Along with Magnetic Properties of NiII and CuII Complexes. J Inorg Organomet Polym Mater 2011. [DOI: 10.1007/s10904-011-9466-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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Sieklucka B, Podgajny R, Korzeniak T, Nowicka B, Pinkowicz D, Kozieł M. A Decade of Octacyanides in Polynuclear Molecular Materials. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201001055] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Barbara Sieklucka
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30‐060 Kraków, Poland
| | - Robert Podgajny
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30‐060 Kraków, Poland
| | - Tomasz Korzeniak
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30‐060 Kraków, Poland
| | - Beata Nowicka
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30‐060 Kraków, Poland
| | - Dawid Pinkowicz
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30‐060 Kraków, Poland
| | - Marcin Kozieł
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30‐060 Kraków, Poland
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15
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Wang TW, Wang J, Ohkoshi SI, Song Y, You XZ. Manganese(II)-Octacyanometallate(V) Bimetallic Ferrimagnets with Tc from 41 to 53 K Obtained in Acidic Media. Inorg Chem 2010; 49:7756-63. [DOI: 10.1021/ic100591h] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tian-Wei Wang
- State Key Laboratory of Coordination Chemistry, Nanjing National Laboratory of Microstructures School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China, 210093
| | - Jun Wang
- State Key Laboratory of Coordination Chemistry, Nanjing National Laboratory of Microstructures School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China, 210093
| | - Shin-ichi Ohkoshi
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Toyko 113-0033, Japan
| | - You Song
- State Key Laboratory of Coordination Chemistry, Nanjing National Laboratory of Microstructures School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China, 210093
| | - Xiao-Zeng You
- State Key Laboratory of Coordination Chemistry, Nanjing National Laboratory of Microstructures School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China, 210093
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16
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Podgajny R, Korzeniak T, Przychodzeń P, Gimenez-Saiz C, Rams M, Kwaśniak M, Sieklucka B. Magneto-Structural Correlations in Discrete MnII-WV Cyano-Bridged Assemblies with Polyimine Ligands. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000280] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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17
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Şenocak A, Karadağ A, Yerli Y, Andaç Ö, Şahin E. Two Novel Bimetallic Cyano-Bridged Coordination Polymers Containing the 2,2′-(Ethylenedioxy)bis (Ethylamine): Syntheses, Structural, Thermal and Magnetic Properties. J Inorg Organomet Polym Mater 2010. [DOI: 10.1007/s10904-010-9361-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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18
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Wang ZX, Liu BL, Wang J, Song Y. Synthesis, crystal structure and magnetic properties of one-dimensional cyano-bridged bimetallic complex of [Mn(Me2-bipy)2]3[W(CN)8]2·9H2O. INORG CHEM COMMUN 2009. [DOI: 10.1016/j.inoche.2009.09.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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19
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Ma SL, Ren S, Ma Y, Liao DZ. Sheet-like of MoV-SmIII assembly containing [MoV(CN)8]3− and Sm3+ ions as building blocks. J CHEM SCI 2009. [DOI: 10.1007/s12039-009-0049-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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20
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Shatruk M, Avendano C, Dunbar KR. Cyanide-Bridged Complexes of Transition Metals: A Molecular Magnetism Perspective. PROGRESS IN INORGANIC CHEMISTRY 2009. [DOI: 10.1002/9780470440124.ch3] [Citation(s) in RCA: 197] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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21
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Ma SL, Ren S, Ma Y, Liao DZ, Yan SP. A high-spin cyanide-bridged Mo6Mn9 cluster: crystal structure and magnetism. Struct Chem 2009. [DOI: 10.1007/s11224-009-9408-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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22
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Sieklucka B, Podgajny R, Pinkowicz D, Nowicka B, Korzeniak T, Bałanda M, Wasiutyński T, Pełka R, Makarewicz M, Czapla M, Rams M, Gaweł B, Łasocha W. Towards high Tc octacyanometalate-based networks. CrystEngComm 2009. [DOI: 10.1039/b905912a] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Three types of heterometallic structural motifs based on [Mo(CN)8]3−/4− anion and MnII cation as building blocks. Struct Chem 2008. [DOI: 10.1007/s11224-008-9383-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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24
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Three-dimensional bimetallic octacyanidometalates [MIV{(μ-CN)4MnII(H2O)2}2·4H2O]n (M=Nb, Mo, W): Synthesis, single-crystal X-ray diffraction and magnetism. CR CHIM 2008. [DOI: 10.1016/j.crci.2008.06.002] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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25
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Pinkowicz D, Podgajny R, Bałanda M, Makarewicz M, Gaweł B, Łasocha W, Sieklucka B. Magnetic spongelike behavior of 3D ferrimagnetic {[Mn(II)(imH)]2[Nb(IV)(CN)8]}n with Tc = 62 K. Inorg Chem 2008; 47:9745-7. [PMID: 18826215 DOI: 10.1021/ic801248f] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Fully reversible room temperature dehydration of 3D {Mn(II)2(imH)2(H2O)4[Nb(IV)(CN)8] x 4 H2O}n (1; imH = imidazole) of Tc = 25 K results in the formation of 3D ferrimagnet {[Mn(II)(imH)]2[Nb(IV)(CN)8]}n (2), with Tc = 62 K, the highest ever known for octacyanometalate-based compounds. The dramatic magnetostructural modifications in 2 provide the first example of magnetic spongelike behavior in an octacyanometallate-based assembly.
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Affiliation(s)
- Dawid Pinkowicz
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland.
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26
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Gillon B, Larionova J, Ruiz E, Nau Q, Goujon A, Bonadio F, Decurtins S. Experimental and theoretical study of the spin ground state of the high-spin molecular cluster [NiII{NiII(CH3OH)3}8(μ-CN)30{WV(CN)3}6]·15CH3OH by polarised neutron diffraction and density functional theory calculations. Inorganica Chim Acta 2008. [DOI: 10.1016/j.ica.2008.03.078] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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27
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Kim JI, Yoon JH, Kwak HY, Koh EK, Hong CS. Crystal Structures and Magnetic Behaviors of Cyanido-Bridged Dinuclear Dimetallic Systems Involving 3d–3d or 3d–5d Metal Centers. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200800232] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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28
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Zhou H, Chen YY, Yuan AH, Shen XP. Synthesis, crystal structure and magnetic properties of a new three-dimensional cyano-bridged Ni(II)–Mo(IV) complex. INORG CHEM COMMUN 2008. [DOI: 10.1016/j.inoche.2007.12.029] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Wang ZX, Wei J, Li YZ, Guo JS, Song Y. Two trinuclear copper(II)-octacyanometalate(IV) bimetallic complexes coordinated with chiral ligands. J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2007.04.031] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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30
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Hilfiger MG, Shatruk M, Prosvirin A, Dunbar KR. Hexacyanoosmate(iii) chemistry: preparation and magnetic properties of a pentanuclear cluster and a Prussian blue analogue with Ni(ii). Chem Commun (Camb) 2008:5752-4. [DOI: 10.1039/b813413h] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Lim JH, You YS, Yoo HS, Yoon JH, Kim JI, Koh EK, Hong CS. Bimetallic MV2CuII3 (M = Mo, W) Coordination Complexes Based on Octacyanometalates: Structures and Magnetic Variations Tuned by Chelated Tetradentate Macrocyclic Ligands. Inorg Chem 2007; 46:10578-86. [DOI: 10.1021/ic701243w] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jeong Hak Lim
- Department of Chemistry, Korea University, Seoul 136-713, Korea, and Nano-Bio System Research Team, Korea Basic Science Institute, Seoul 136-713, Korea
| | - Young Sin You
- Department of Chemistry, Korea University, Seoul 136-713, Korea, and Nano-Bio System Research Team, Korea Basic Science Institute, Seoul 136-713, Korea
| | - Houng Sik Yoo
- Department of Chemistry, Korea University, Seoul 136-713, Korea, and Nano-Bio System Research Team, Korea Basic Science Institute, Seoul 136-713, Korea
| | - Jung Hee Yoon
- Department of Chemistry, Korea University, Seoul 136-713, Korea, and Nano-Bio System Research Team, Korea Basic Science Institute, Seoul 136-713, Korea
| | - Jae Il Kim
- Department of Chemistry, Korea University, Seoul 136-713, Korea, and Nano-Bio System Research Team, Korea Basic Science Institute, Seoul 136-713, Korea
| | - Eui Kwan Koh
- Department of Chemistry, Korea University, Seoul 136-713, Korea, and Nano-Bio System Research Team, Korea Basic Science Institute, Seoul 136-713, Korea
| | - Chang Seop Hong
- Department of Chemistry, Korea University, Seoul 136-713, Korea, and Nano-Bio System Research Team, Korea Basic Science Institute, Seoul 136-713, Korea
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Podgajny R, Pinkowicz D, Korzeniak T, Nitek W, Rams M, Sieklucka B. High Tc Ferrimagnetic Organic−Inorganic Hybrid Materials with MnII−L−MnII and MnII−NC−NbIV Linkages (L = Pyrazine, Pyrazine-N,N‘-dioxide, Bipyrimidine). Inorg Chem 2007; 46:10416-25. [DOI: 10.1021/ic7018132] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Robert Podgajny
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland and M. Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland
| | - Dawid Pinkowicz
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland and M. Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland
| | - Tomasz Korzeniak
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland and M. Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland
| | - Wojciech Nitek
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland and M. Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland
| | - Michał Rams
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland and M. Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland
| | - Barbara Sieklucka
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland and M. Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland
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Zhao H, Shatruk M, Prosvirin AV, Dunbar KR. Variation of Heterometallic Structural Motifs Based on [W(CN)8]3− Anions and MnII Ions as a Function of Synthetic Conditions. Chemistry 2007; 13:6573-89. [PMID: 17568460 DOI: 10.1002/chem.200700298] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Reactions of [W(CN)(8)](3-/4-) anions with complexes of Mn(2+) ion with tridentate organic ligand 2,4,6-tris(2-pyridyl)-1,3,5-triazine (tptz) lead to a series of heterobimetallic complexes. The crystal structures of these compounds are derived from the same basic structural fragment, namely a W(2)Mn(2) square constructed of alternating cyanide-bridged W and Mn ions. In [Mn(II)(tptz)(OAc)(H(2)O)(2)](2){[Mn(II)(tptz)(MeOH)(1.58)(H(2)O)(0.42)](2)[W(V)(CN)(8)](2)}.5 MeOH.9.85 H(2)O (3), isolated molecular squares are co-crystallized with mononuclear cationic Mn(II) complexes. The structure of {[Mn(II)(tptz)(MeOH)](2)[W(IV)(CN)(8)].2 MeOH}(infinity) (4) is based on an infinite chain of vertex-sharing squares, while {[Mn(II) (2)(tptz)(2)(MeOH)(3)(OAc)][W(V)(CN)(8)].3.5 MeOH0.25 H(2)O}(infinity) (5) and {[Mn(II) (2)(tptz)(2)(MeOH)(3)W(V)(CN)(8)][Mn(II)(tptz)(MeOH)W(V)(CN)(8)].2 H(2).OMeOH}(8) (7) are derived from such an infinite chain by removing one of the W-C[triple bond]N-Mn linkages in each of the squares. The decanuclear cluster [Mn(II) (6)(tptz)(6)(MeOH)(4)(DMF)(2)W(V) (4)(CN)(32)].8.2 H(2)O.2.3 MeOH (6) is a truncated version of structure 4 and consists of three vertex-sharing W(2)Mn(2) squares. The structure of [Mn(II)(tptz)(MeOH)(NO(3))](2)[Mn(II)(tptz)(MeOH) (DMF)](2)[W(V)(CN)(8)](2).6 MeOH (8) consists of a hexanuclear cluster, in which the central W(2)Mn(2) square is extended by two Mn side-arms attached via CN(-) ligands to the W corners of the square. The magnetic behavior of these heterobimetallic complexes (except for 4) is dominated by antiferromagnetic coupling between Mn(II) and W(V) ions mediated by cyanide bridges. Compounds 3, 6, and 8 exhibit high spin ground states of S=4, 13, and 9, respectively, while 5 and 7 exhibit behavior typical of a ferrimagnetic chain with alternating spin centers. Complex 4 contains diamagnetic W(IV) centers but holds promise as a potential photomagnetic solid.
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Affiliation(s)
- Hanhua Zhao
- Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012, USA
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34
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Manna SC, Ribas J, Zangrando E, Ray Chaudhuri N. Hetero-metallic frameworks of [Pd(CN)4]2− and Cu(II) with triamines: A rare example of a tetracyanometallate bridged 2D coordination polymer. Polyhedron 2007. [DOI: 10.1016/j.poly.2007.02.028] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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35
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Synthesis, crystal structure and magnetic properties of a three-dimensional cyano-bridged heterometallic complex {NiII(Me6-[14]ane-N4)}2[WIV(CN)8]·6H2O. INORG CHEM COMMUN 2007. [DOI: 10.1016/j.inoche.2007.04.031] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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36
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Synthesis and characterization of one- and two-dimensional octacyanometalate(V) networks: {[trans-MII(DMF)4][cis-MII(DMF)4]2[MV(CN)8]2}n (MII=Mn, Fe, Ni; MV=Mo, W). Polyhedron 2007. [DOI: 10.1016/j.poly.2007.01.049] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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37
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Shen L, Zhang Y, Uiu J. Synthesis, crystal structure and magnetic properties of a three-dimensional cyano-bridged heterometallic complex of manganese(II) and molybdenum(IV). J COORD CHEM 2007. [DOI: 10.1080/00958970500393315] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Liang Shen
- a Department of Chemistry, Hangzhou Teachers College , Hangzhou 310012, P.R. China
| | - Yijian Zhang
- a Department of Chemistry, Hangzhou Teachers College , Hangzhou 310012, P.R. China
| | - Jin Uiu
- a Department of Chemistry, Hangzhou Teachers College , Hangzhou 310012, P.R. China
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38
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Cuevas A, Kremer C, Suescun L, Russi S, Mombrú AW, Lloret F, Julve M, Faus J. Synthesis, crystal structure and magnetic properties of novel heterobimetallic malonate-bridged MIIReIV complexes (M = Mn, Fe, Co and Ni). Dalton Trans 2007:5305-15. [DOI: 10.1039/b708927a] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Lim JH, Kang JS, Kim HC, Koh EK, Hong CS. Synthesis, Crystal Structures, and Magnetic Properties of Cyano-Bridged Honeycomblike Layers MV−CuII (M = Mo, W) Chelated by a Macrocyclic Ligand. Inorg Chem 2006; 45:7821-7. [PMID: 16961374 DOI: 10.1021/ic060868b] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Two cyano-bridged Cu(II)-M(V) [M = Mo (2), W (3)] complexes formed by self-assembly of octacyanometalates [M(CN)8]3- (M = Mo, W) with a new molecular precursor [Cu(L2)]2+ (1) (L2 = a macrocyclic ligand) in a 2:3 ratio have been investigated in terms of structures and magnetic behaviors. The M2Cu3 repeating unit of both bimetallic compounds is extended to a two-dimensional honeycomblike layered structure. The pendant ethyl groups on L2 noticeably influence the structural parameters around the Cu center. Compared with the system composed of a macrocycle without a side group, Cu-N(ax) (ax = axial) distances become shorter and the Cu-N(ax)-C(ax) angles are more bent for 2 and 3. The magnetic data denote that the Cu(II) and M(V) spins undergo explicit ferromagnetic interactions via CN bridges. From a structural and magnetic point of view, given that the Cu-N(ax) bond length in the tetragonally distorted octahedral Cu(II) environment is long enough, the overall ferromagnetic character remains despite the variation of Cu-N(ax)-C(ax) angle in this system.
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Affiliation(s)
- Jeong Hak Lim
- Department of Chemistry and Center for Electro- and Photo-Responsive Molecules, Korea University, Seoul 136-701, Korea
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40
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Visinescu D, Desplanches C, Imaz I, Bahers V, Pradhan R, Villamena FA, Guionneau P, Sutter JP. Evidence for Increased Exchange Interactions with 5d Compared to 4d Metal Ions. Experimental and Theoretical Insights into the Ferromagnetic Interactions of a Series of Trinuclear [{M(CN)8}3-/NiII] Compounds (M = MoV or WV). J Am Chem Soc 2006; 128:10202-12. [PMID: 16881650 DOI: 10.1021/ja061911x] [Citation(s) in RCA: 106] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Two main questions are addressed in this study: (i) What increase of exchange interaction can be expected when replacing a paramagnetic metal ion with a heavier congener located farther down the periodic table (i.e., 3d-4d-5d), and (ii) for a molecular unit with higher coordination numbers, eight in the present case, how is the magnetic information transferred from the metal ion to its ligand set? Qualitative and quantitative investigations on a series of trimetallic cyano-bridged {MoV(CN)8-NiII} and {WV(CN)8-NiII} compounds revealed ferromagnetic interactions but with a strength modulated by the spin organization and their nature. DFT calculations have been used to examine the mechanism and strengths of the exchange coupling, as well as the influence of the local symmetry of the cyanometalate unit on the spin density distribution. Both the experimental and the calculated behaviors underline a noticeable difference between the Mo and the W derivatives (JMoNi = 26.9 cm(-1) and JWNi = 37.3 cm(-1)) that is correlated to the spin density transferred from the metal center to its ligand set. It is also shown that the shape of the {M(CN)8} polyhedron may lead to nonequivalent CN sites and, consequently, to different strengths of the exchange interaction as a result of the position of the bridging ligands.
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Affiliation(s)
- Diana Visinescu
- Institut de Chimie de la Matière Condensée de Bordeaux-CNRS, Université Bordeaux 1, 87, Avenue Dr. Schweitzer, F-33608 Pessac, France
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41
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Withers JR, Li D, Triplet J, Ruschman C, Parkin S, Wang G, Yee GT, Holmes SM. A Two-Dimensional Octacyanomolybdate(V)-Based Ferrimagnet: {[MnII(DMF)4]3[MoV(CN)8]2}n. Inorg Chem 2006; 45:4307-9. [PMID: 16711670 DOI: 10.1021/ic0515251] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Treatment of [HNBu3]3[Mo(V)(CN)8] with manganese(II) p-toluenesulfonate in N,N'-dimethylformamide (DMF) affords {[Mn(II)(DMF)4]3[Mo(V)(CN)8]2}n (1) as a two-dimensional network. The structure of 1 consists of [cis-Mn(II)(DMF)4(mu-NC)2]2+ and [trans-Mn(II)(DMF)4(mu-NC)2]2+ units that are linked via cyanides to three-connected [Mo(V)(CN)5(mu-CN)3]3- centers in a 4:2:6 ratio, forming 12-membered rings. Magnetic measurements indicate that 1 is a ferrimagnet (TN = 8 K) that exhibits frequency-dependent behavior in chi". Heating of 1 affords an additional magnetic phase (TN = 21 K) that is absent of linkage isomerism.
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Affiliation(s)
- Jeffrey R Withers
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055, USA
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42
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Ohkoshi SI, Tokoro H, Hozumi T, Zhang Y, Hashimoto K, Mathonière C, Bord I, Rombaut G, Verelst M, Cartier dit Moulin C, Villain F. Photoinduced magnetization in copper octacyanomolybdate. J Am Chem Soc 2006; 128:270-7. [PMID: 16390157 DOI: 10.1021/ja0559092] [Citation(s) in RCA: 240] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This article describes the studies of a photomagnetic cyanide-bridged Cu-Mo bimetallic assembly, Cu(II)(2)[Mo(IV)(CN)(8)].8H(2)O (Cu(II), S = (1)/(2); Mo(IV), S = 0) (1), which has an intervalence transfer (IT) band from Mo(IV)-CN-Cu(II) to Mo(V)-CN-Cu(I) around 480 nm. Wide-angle X-ray scattering and X-ray spectroscopic studies provide precise information about the 3D connectivity and the local environment of the transition metal ions. Irradiating with blue light causes solid 1 to exhibit a spontaneous magnetization (Curie temperature = 25 K). The thermal reversibility is carefully studied and shows the long-time stability of the photoinduced state up to 100 K. Photoreversibility is also observed; i.e., the magnetization is induced by irradiation with light below 520 nm, while the magnetization is reduced by irradiation with light above 520 nm. The UV-vis absorption spectrum after irradiation shows a decrease of the IT band and the appearance of the reverse-IT band in the region of 600-900 nm (lambda(max) = 710 nm). This UV-vis absorption spectrum is recovered to the original spectrum by irradiation with 658-, 785-, and 840-nm light. In this photomagnetic effect, the excitation of the IT band causes an electron transfer from Mo(IV) to Cu(II), producing a ferromagnetic mixed-valence isomer of Cu(I)Cu(II)[Mo(V)(CN)(8)].8H(2)O (Cu(I), S = 0; Cu(II), S = (1)/(2); Mo(V), S = (1)/(2)) (1'). 1' returns to 1 by irradiation of the reverse-IT band, which obeys the scheme for the potential energy surface in mixed-valence class II compounds.
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Affiliation(s)
- Shin-ichi Ohkoshi
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
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43
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Bimetallic complex of the type [Cu(tren)(NCS)]4[Mn(NCS)6]: A hydrogen bonded network structure. Polyhedron 2006. [DOI: 10.1016/j.poly.2005.08.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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44
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Freedman DE, Bennett MV, Long JR. Symmetry-breaking substitutions of [Re(CN)8]3−into the centered, face-capped octahedral clusters (CH3OH)24M9M′6(CN)48(M = Mn, Co; M′ = Mo, W). Dalton Trans 2006:2829-34. [PMID: 16751891 DOI: 10.1039/b517707c] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The diamagnetic complex [Re(CN)8]3- is shown to react with Mn2+ ions in methanol to generate the centered, face-capped octahedral cluster (CH3OH)24Mn9Re6(CN)48, which is structurally analogous to (CH3OH)24Mn9Mo6(CN)48. Related reactions involving stoichiometric mixtures of octacyanometalate complexes generate the substituted species (CH3OH)24Mn9Mo5Re(CN)48, (CH3OH)24Co9Mo5Re(CN)48, (CH3OH)24Mn9Mo3Re3(CN)48, (CH3OH)24Mn9W5Re(CN)48 and (CH3OH)24Co9W5Re(CN)48, in which the O(h) symmetry of the cluster core is broken. Reassessment of the magnetic properties of the Mn9Mo6(CN)48 cluster confirm that it possesses a ground state spin of S = 39/2, but does not exhibit single-molecule-magnet behavior. Lowering the symmetry of the molecule by substitutions of ReV at one or three of the MoV sites does not lead to an overall increase in the magnetic anisotropy, as probed by ac magnetic susceptibility measurements. A similar result occurs for the other substituted species, with the important exception of the new single-molecule magnet (CH3OH)24Co9W5Re(CN)48, for which the spin reversal barrier is significantly reduced relative to that observed previously in (CH3OH)24Co9W6(CN)48.
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Affiliation(s)
- Danna E Freedman
- Department of Chemistry, University of California, Berkeley, CA 94720, USA
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45
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Different topologies in heterometallic frameworks of copper(II) with bridging ligand: Syntheses, crystal structures, thermal and magnetic properties. Inorganica Chim Acta 2006. [DOI: 10.1016/j.ica.2005.09.056] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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46
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Podgajny R, Bałanda M, Sikora M, Borowiec M, Spałek L, Kapusta C, Sieklucka B. Cobalt(ii) octacyanotungstate(v) organic–inorganic hybrid ferromagnetic materials with pyrazine and 4,4′-bipyridine. Dalton Trans 2006:2801-9. [PMID: 16751888 DOI: 10.1039/b516004a] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two new ferromagnetic organic-inorganic hybrid materials [Co(II)3(H2O)6(pyz)3[W(V)(CN)8]2].3.5H2O (1) and [Co(II)3(H2O)4(4,4'-bpy)3[W(V)(CN)8]2].1.5(4,4'-bpy).6H2O (2) have been synthesised and characterised. The structure of the compounds have been investigated combining EXAFS (extended X-ray absorption fine structure), ES-MS (electrospray mass spectrometry), IR (infrared spectroscopy), UV-VIS electronic spectroscopy and TGA (thermogravimetric analysis) coupled with QMS (quadrupole mass spectrometer) experiments. The studies reveal that both compounds consist of Co(II)-NC-W(V) and Co(II)-L-Co(II) linkages (L = pyrazine (1) or 4,4-bipyridine (2)). Both networks are created by cyano-bridged Co(II)3W(V)2 chains joined by organic linkers into a 2D architecture. A difference of cobalt coordination numbers in both compounds derived from EXAFS study is consistent with the ES-MS conclusion. The ac magnetic characterisation exhibits the transition to the ferromagnetic phase at T(C) = 26 K (1) and to the spin glass-like phase at T(G) = 16 K (2). The frequency dependent chi'(T) and chi''(T) signals indicate the presence of some disorder in spin alignment below ordering temperatures. Both networks are also characterised a by magnetic hysteresis loop of coercive field H(c) = 750 Oe (1) and 1200 Oe (2) at T = 4.2 K.
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Affiliation(s)
- Robert Podgajny
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060, Kraków, Poland.
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47
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Sieklucka B, Podgajny R, Przychodzeń P, Korzeniak T. Engineering of octacyanometalate-based coordination networks towards functionality. Coord Chem Rev 2005. [DOI: 10.1016/j.ccr.2005.02.024] [Citation(s) in RCA: 132] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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48
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49
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50
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Rebilly JN, Catala L, Rivière E, Guillot R, Wernsdorfer W, Mallah T. A Tetranuclear CrIIINiII3 Cyano-Bridged Complex Based on M(tacn) Derivative Building Blocks. Inorg Chem 2005; 44:8194-6. [PMID: 16270954 DOI: 10.1021/ic0514391] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reaction of Cr(Bztacn)(CN)3 (Bztacn is 1,4,7-trisbenzyl-1,4,7-triazacyclononane) with Ni(iPrtacn)Cl2 (iPrtacn is 1,4,7-trisisopropyl-1,4,7-triazacyclononane) affords a CrNi3 tetranuclear complex. Variable temperature and magnetization versus field measurements show a S = 9/2 ground state and an appreciable magnetic anisotropy with a negative D(9/2) value equal to -0.54 cm(-1). Magnetization studies on one single crystal using a micro-SQUID show a fast tunneling process at zero field at very low temperature.
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Affiliation(s)
- Jean-Noël Rebilly
- Laboratoire de Chimie Inorganique, ICMMO, CNRS UMR 8613, Université Paris-Sud, 91405 Orsay, France
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