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Miller JS, Stephens PW. Cation Adaptive Structures Based on Manganese Cyanide Prussian Blue Analogues: Application of Powder Diffraction Data to Solve Complex, Unprecedented Stoichiometries and New Structure Types. Chemistry 2023; 29:e202302136. [PMID: 37572364 DOI: 10.1002/chem.202302136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/06/2023] [Accepted: 08/07/2023] [Indexed: 08/14/2023]
Abstract
A Mn(II) salt and A+ CN- under anaerobic conditions react to form 2-D and 3-D extended structured compounds of Am MnII n (CN)m+2n stoichiometry. Here, the creation and characterization of this large family of compounds, for example AMnII 3 (CN)7 , A2 MnII 3 (CN)8 , A2 MnII 5 (CN)12 , A3 MnII 5 (CN)13 , and A2 MnII [MnII (CN)6 ], where A represents alkali and tetraalkylammonium cations, is reviewed. Cs2 MnII [MnII (CN)6 ] has the typical Prussian blue face centered cubic unit cell. However, the other alkali salts are monoclinic or rhombohedral. This is in accord with smaller alkali cation radii creating void space that is minimized by increasing the van der Waals stabilization energy by reducing ∠Mn-N≡C, which, strengthens the magnetic coupling and increases the magnetic ordering temperatures. This is attributed to the non-rigidity of the framework structure due the significant ionic character associated with the high-spin MnII sites. For larger tetraalkylammonium cations, the high-spin Mn sites lack sufficient electrostatic A+ ⋅⋅⋅NC stabilization and form unexpected 4- and 5-coordinated Mn sites within a flexible, extended framework around the cation; hence, the size, shape, and charge of the cation dictate the unprecedented stoichio-metry and unpredictable cation adaptive structures. Antiferromagnetic coupling between adjacent MnII sites leads to ferrimagnetic ordering, but in some cases antiferromagnetic coupling of ferrimagnetic layers are compensated and synthetic antiferromagnets are observed. The magnetic ordering temperatures for ferrimagnetic A2 MnII [MnII (CN)6 ] with both octahedral high- and low-spin MnII sites increase with decreasing ∠Mn-N≡C. The crystal structures for all of the extended structured materials were obtained by powder diffraction.
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Affiliation(s)
- Joel S Miller
- Department of Chemistry, 315 S. 1400 E. RM 2124, University of Utah, Salt Lake City, Utah, 84112-0850, USA
| | - Peter W Stephens
- Department of Physics & Astronomy, Stony Brook University, Stony Brook, New York, 11794-3800, USA
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Miller JS. Artificial Antiferromagnets Possessing Extended Zero‐, One‐, Two‐, and Three‐Dimensional Structures. Chemistry 2022; 28:e202201342. [DOI: 10.1002/chem.202201342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Joel S. Miller
- Department of Chemistry University of Utah 84112-0850 Salt Lake City UT USA
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Graham AG, Lapidus SH, Hawkins CG, Stephens PW, Miller JS. Ferrimagnetic Ordering and Anomalous Stoichiometry Observed for the Cubic, Extended 3D Prussian Blue Analogues (NEt
3
Me)
2
Mn
II
5
(CN)
12
and (NEt
2
Me
2
)
2
Mn
II
5
(CN)
12
: A Cation‐Adaptive Structure. Chemistry 2020; 26:15565-15572. [DOI: 10.1002/chem.202000586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 05/10/2020] [Indexed: 11/07/2022]
Affiliation(s)
- Adora G. Graham
- Department of Chemistry University of Utah Salt Lake City UT 84112-0850 USA
| | - Saul H. Lapidus
- Department of Physics & Astronomy Stony Brook University Stony Brook NY 11794-3800 USA
- Current Address: Advanced Photon Source Argonne National Laboratory Lemont IL 60439 USA
| | - Casey G. Hawkins
- Department of Chemistry University of Utah Salt Lake City UT 84112-0850 USA
| | - Peter W. Stephens
- Department of Physics & Astronomy Stony Brook University Stony Brook NY 11794-3800 USA
| | - Joel S. Miller
- Department of Chemistry University of Utah Salt Lake City UT 84112-0850 USA
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Zhang Y, Gao L, Zhou W, Wei X, Hu T. Synthesis and magnetic properties of two Mn-based coordination polymers constructed by a mixed-ligand strategy. CrystEngComm 2020. [DOI: 10.1039/d0ce01178a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two Mn(ii) CPs have been synthesized by mixed-ligand strategy and measured for their magnetic properties. Moreover, analysis of the magnetic structure–effect relationship indicates that 1 and 2 have different Mn chains of magnetic interactions.
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Affiliation(s)
- Yujuan Zhang
- College of Chemistry and Chemical Engineering
- North University of China
- Taiyuan 030051
- China
| | - Lingling Gao
- School of Chemistry and Chemical Engineering
- Jinzhong University
- Jinzhong 030619
- China
| | - Wendi Zhou
- College of Chemistry and Chemical Engineering
- North University of China
- Taiyuan 030051
- China
| | - Xiaoqin Wei
- School of Chemistry and Chemical Engineering
- Jinzhong University
- Jinzhong 030619
- China
| | - Tuoping Hu
- College of Chemistry and Chemical Engineering
- North University of China
- Taiyuan 030051
- China
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Lapidus SH, Stephens PW, Kareis CM, VanNatta PE, Miller JS. Anomalous Stoichiometry and Antiferromagnetic Ordering for the Extended Hydroxymanganese(II) Cubes/Hexacyanometalate-Based 3D-Structured [Mn II 4 (OH) 4 ][Mn II (CN) 6 ](OH 2 ) 6 ⋅H 2 O. Chemistry 2019; 25:1752-1757. [PMID: 30286266 DOI: 10.1002/chem.201804935] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Indexed: 11/11/2022]
Abstract
The reaction of MnII (O2 CMe)2 and NaCN or LiCN in water forms a light green insoluble material. Structural solution and Rietveld refinement of high-resolution synchrotron powder diffraction data for this unprecedented, complicated compound of previously unknown composition revealed a new alkali-free ordered structural motif with [MnII 4 (μ3 -OH)4 ]4+ cubes and octahedral [MnII (CN)6 ]4- ions interconnected in 3D by MnII -N≡C-MnII linkages. The composition is {[MnII (OH2 )3 ][MnII (OH2 )]3 }(μ3 -OH)4 ][MnII (μ-CN)2 (CN)4 ]⋅H2 O=[MnII 4 (μ3 -OH)4 (OH2 )6 ][MnII (μ-CN)2 (CN)4 ]⋅H2 O, which is further simplified to [Mn4 (OH)4 ][Mn(CN)6 ](OH2 )7 (1). 1 has four high-spin (S=5/2) MnII sites that are antiferromagnetically coupled within the cube and are antiferromagnetically coupled to six low-spin (S=1/2) octahedral [MnII (CN)6 ]4- ions. Above 40 K the magnetic susceptibility, χ(T), can be fitted to the Curie-Weiss expression, χ ∝(T-θ)-1 , with θ=-13.4 K, indicative of significant antiferromagnetic coupling and 1 orders as an antiferromagnet at Tc =7.8 K.
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Affiliation(s)
- Saul H Lapidus
- Department of Physics & Astronomy, State University of New York, Stony Brook, NY, 11794-380, USA.,Current Address: X-ray Science Division, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - Peter W Stephens
- Department of Physics & Astronomy, State University of New York, Stony Brook, NY, 11794-380, USA
| | - Christopher M Kareis
- Department of Chemistry, University of Utah, Salt Lake City, UT, 84112-0850, USA
| | - Peter E VanNatta
- Department of Chemistry, University of Utah, Salt Lake City, UT, 84112-0850, USA
| | - Joel S Miller
- Department of Chemistry, University of Utah, Salt Lake City, UT, 84112-0850, USA
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Lapidus SH, Graham AG, Kareis CM, Hawkins CG, Stephens PW, Miller JS. Anomalous Stoichiometry, 3-D Bridged Triangular/Pentagonal Layered Structured Artificial Antiferromagnet for the Prussian Blue Analogue A 3Mn II5(CN) 13 (A = NMe 4, NEtMe 3). A Cation Adaptive Structure. J Am Chem Soc 2019; 141:911-921. [PMID: 30557002 DOI: 10.1021/jacs.8b10638] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The size of the organic cation dictates both the composition and the extended 3-D structure for hybrid organic/inorganic Prussian blue analogues (PBAs) of A aMnII b(CN) a+2 b (A = cation) stoichiometry. Alkali PBAs are typically cubic with both MC6 and M'N6 octahedral coordination sites and the alkali cation content depends on the M and M' oxidation states. The reaction of MnII(O2CCH3)2 and A+CN- (A = NMe4, NEtMe3) forms a hydrated material of A3MnII5(CN)13 composition. A3MnII5(CN)13 forms a complex, 3-D extended structural motif with octahedral and rarely observed square pyramidal and trigonal bipyramidal MnII sites with a single layer motif of three pentagonal and one triangular fused rings. A complex pattern of MnIICN chains bridge the layers. (NMe4)3MnII5(CN)13 possesses one low-spin octahedral and four high-spin pentacoordinate MnII sites and orders as an antiferromagnet at 11 K due to the layers being bridged and antiferromagnetically coupled by the nonmagnetic cyanides. These are rare examples of intrinsic, chemically prepared and controlled artificial antiferromagnets and have the advantage of having controlled uniform spacing between the layers as they are not physically prepared via deposition methods. A3Mn5(CN)13 (A = NMe4, NEtMe3) along with [NEt4]2MnII3(CN)8, [NEt4]MnII3(CN)7, and Mn(CN)2 form stoichiometrically related A aMnII b(CN) a+2 b ( a = 0, b = 1; a = 2, b = 3; a = 1, b = 3; and a = 3, b = 5) series possessing unprecedented stoichiometries and lattice motifs. These unusual structures and stoichiometries are attributed to the very ionic nature of the high-spin N-bonded MnII ion that enables the maximization of the attractive van der Waals interactions via minimization of void space via a reduced ∠MnNC. This A aMnII b(CN) a+2 b family of compounds are referred to as being cation adaptive in which size and shape dictate both the stoichiometry and structure.
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Affiliation(s)
- Saul H Lapidus
- Department of Physics & Astronomy , State University of New York , Stony Brook , New York 11794-3800 , United States
| | - Adora G Graham
- Department of Chemistry , University of Utah , Salt Lake City , Utah 84112-0850 , United States
| | - Christopher M Kareis
- Department of Chemistry , University of Utah , Salt Lake City , Utah 84112-0850 , United States
| | - Casey G Hawkins
- Department of Chemistry , University of Utah , Salt Lake City , Utah 84112-0850 , United States
| | - Peter W Stephens
- Department of Physics & Astronomy , State University of New York , Stony Brook , New York 11794-3800 , United States
| | - Joel S Miller
- Department of Chemistry , University of Utah , Salt Lake City , Utah 84112-0850 , United States
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Kareis CM, Davidson RA, Moore CE, Rheingold AL, Miller JS. Synthesis, structure, and magnetic properties of the trans-difluoro-bis-phenoxo-bridged iron(III) complex FeIII2(BBPA)2F2 (H2BBPA = N,N-bis(2-hydroxybenzyl)-N-(2-pyridylmethyl)amine). Polyhedron 2018. [DOI: 10.1016/j.poly.2017.10.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Ghosh S, Roy S, Liu CM, Mohanta S. A nickel(ii)–manganese(ii)-azido layered coordination polymer showing a three-dimensional ferrimagnetic order at 35 K. Dalton Trans 2018; 47:836-844. [DOI: 10.1039/c7dt04032f] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis, crystal structure and magnetic properties of a two-dimensional nickel(ii)–manganese(ii)–azido system are described. It is an interesting molecular magnet because it exhibits long-range ferrimagnetic ordering at a Tc of 35 K and a hysteresis loop up to 20 K.
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Affiliation(s)
- Sagar Ghosh
- Department of Chemistry
- University of Calcutta
- Kolkata 700 009
- India
| | - Shuvayan Roy
- Department of Chemistry
- University of Calcutta
- Kolkata 700 009
- India
| | - Cai-Ming Liu
- Beijing National Laboratory for Molecular Sciences
- Center for Molecular Science
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
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Abstract
Mn(TCNE)[C4(CN)8]1/2 (TCNE = tetracyanoethylene) and [NEt4]Mn(II)3(CN)7 have extended layers with nearest neighbor intralayer S = 5/2 and S = 1/2 spin sites that couple antiferromagnetically forming ferrimagnetic layers. These layers are uniformly connected via diamagnetic (nonmagnetic) bridging μ4-[(C4(CN)8](2-) (8.77 Å) or μ-CN (5.48 Å) ligands, respectively, that antiferromagnetic couple the ferrimagnetic layers resulting in an antiferromagnet. The Jinter/kB is -1.0 and -1.8 K (H=-JSi⋅Sj) for Mn(TCNE)[C4(CN)8]1/2 and [NEt4]Mn(II)3(CN)7, respectively. Albeit intrinsically multilayered, these antiferromagnets have the same motif as that for artificial/synthetic antiferromagnets that exhibit giant magnetoresistance (GMR) and are commercially used in many magnetic memory applications.
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Affiliation(s)
- Joel S Miller
- Department of Chemistry, University of Utah, Salt Lake City, UT 84112-0850 (USA), Fax: (+1) 801 585 5455.
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Kawamoto Y, Yamashita S, Yoshimoto R, Nakazawa Y, DaSilva JG, Kareis CM, Miller JS. Thermodynamic investigation by heat capacity measurements of ferrimagnetic A2Mn[Mn(CN)6] (A=K, Rb, Cs) Prussian blue compounds. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2014; 26:016001. [PMID: 24263378 DOI: 10.1088/0953-8984/26/1/016001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Heat capacity measurements of a new series of Prussian blue analogs of A2Mn[Mn(CN)6] (A=K, Rb, Cs) composition were performed using thermal relaxation calorimetry. The Cs compound has a face-centered cubic structure with a linear Mn-C≡N-Mn linkage, while the monoclinic Rb and K compounds have nonlinear Mn-C≡N-Mn linkages. For all of the compounds, large broad thermal anomalies associated with magnetic transitions were observed in the temperature dependence of the heat capacity. The systematic changes in the heat capacity for the three compounds under magnetic fields of up to 7 T were found to be consistent with ferrimagnetic ordering with large spontaneous magnetization. Although the peak temperatures were slightly lower than reported values obtained by magnetic susceptibility measurements, the magnetic entropy was evaluated to be 22.0 ± 2.5 J K(-1) mol(-1). This value is consistent with an entropy of Rln12 corresponding to full entropy of one low-spin and one high-spin Mn(II) ion in the formula unit, though some ambiguity remains in lattice estimation. Broadening of the peak width of the magnetic heat capacity divided by the temperature was observed as the size of the alkali ions decreased from Cs to K. This behavior is consistent with an increase in the lattice distortion produced by the bending of the C≡N-Mn angles.
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Affiliation(s)
- Yuka Kawamoto
- Department of Chemistry, Graduate School of Science, Osaka University, Machikaneyama 1-1, Toyonaka, Osaka 560-0043, Japan
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11
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Li H, Xu Z, Zhao B, Jia Y, Ding R, Hou H, Fan Y. Nuclearity control of manganese polymers dependent on structural differences in the coligands and magnetic properties studies. CrystEngComm 2014. [DOI: 10.1039/c3ce41553h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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DaSilva JG, McConnell AC, Miller JS. Pressure-Dependent Reversible Increase in Tc for the Ferrimagnetic 2-D MnII(TCNE)I(OH2) and 3-D MnII(TCNE)3/2(I3)1/2·zTHF Organic-Based Magnets. Inorg Chem 2013; 52:4629-34. [DOI: 10.1021/ic400250n] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jack G. DaSilva
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake
City, Utah 84112-0850, United States
| | - Amber C. McConnell
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake
City, Utah 84112-0850, United States
| | - Joel S. Miller
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake
City, Utah 84112-0850, United States
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DaSilva JG, Miller JS. Pressure-Dependent Increase in Tc and Magnetic Behavior of [Ru2(O2CBut)4]3[M(CN)6]·2H2O (M = Cr, Fe). Inorg Chem 2013; 52:1418-23. [DOI: 10.1021/ic302148s] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jack G. DaSilva
- Department of Chemistry, 315 S 1400
East, University of Utah, Salt Lake City,
Utah 84112-0850, United States
| | - Joel S. Miller
- Department of Chemistry, 315 S 1400
East, University of Utah, Salt Lake City,
Utah 84112-0850, United States
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Wang K, Yi XC, Wang X, Li XB, Gao EQ. Structures and magnetic properties of copper(ii) and manganese(ii) polymers derived from pseudohalides and a flexible zwitterionic dicarboxylate ligand. Dalton Trans 2013; 42:8748-60. [DOI: 10.1039/c3dt50460c] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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