A High-Spin Cyanide-Bridged Mn9W6 Cluster (S = 39/2) with a Full-Capped Cubane Structure

Zhong, Ai-Guo; Seino, Hidetake; Mizobe, b Yasushi; Hidai, c Masanobu; Fujishima, d Akira; Ohkoshi, Shin‐ichi; Hashimoto, Kazuhito

doi:10.1021/ja992622u

Cited by 366 publications

(176 citation statements)

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“…This discrepancy may be due to antiferromagnetic intramolecular interactions. Similar behaviour was reported in [7].…”

Section: Resultssupporting

confidence: 89%

“…The chains are further decorated by other terminal 4-aldrithiol molecules and MeOH molecules. The internal structure of the Mn 9 W 6 clusters is topologically identical with those reported recently for this family of compounds [7][8][9]. One-dimensional (1D) coordination topology in 1 is accompanied by a dense closely packed and nearly isotropic 2D-3D supramolecular cluster based architecture (Fig.…”

Section: Resultssupporting

confidence: 81%

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Field-Induced Slow Magnetic Relaxation in Mn_9W_6 Cluster-Based Compound

et al. 2017

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Magnetic measurements of a three-dimensional (3D) molecular magnet built of Mn9[W(CN)8]6 clusters have been carried out to study its static and dynamic properties. Measurements of ac susceptibility in the presence of static magnetic field revealed slow magnetic relaxations. It was found that for the 120 Hz wave frequency the optimal static field which maximizes the imaginary component of the ac susceptibility is about 500 Oe.

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“…This discrepancy may be due to antiferromagnetic intramolecular interactions. Similar behaviour was reported in [7].…”

Section: Resultssupporting

confidence: 89%

Section: Resultssupporting

confidence: 81%

Field-Induced Slow Magnetic Relaxation in Mn_9W_6 Cluster-Based Compound

et al. 2017

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“…[13,[22][23][24][25] These compounds exhibit high spin ground states, moreover the Co and Ni containing structures were shown to behave as single molecule magnets (SMMs). [13,25] It is also 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.…”

Section: Introductionmentioning

confidence: 99%

“…[13,[22][23][24][25] The latter compounds behave as single-molecule magnets (SMMs), due to high ground state spin values and magnetic anisotropy. The high nuclearity of complex 6 and, consequently, its high ground state spin value render this molecule a promising scaffold for the development of new SMMs.…”

mentioning

confidence: 99%

Variation of Heterometallic Structural Motifs Based on [W(CN)₈]³⁻ Anions and Mn^II Ions as a Function of Synthetic Conditions

Zhao

Shatruk

Prosvirin

et al. 2007

Chemistry A European J

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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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“…6,7 Especially, in the so-called Prussian Blue-like compound, A I M II ͓MЈ III ͑CN͒ 6 ͔ ͑A = Na, K, Rb, Cs, M = Mn, Co, Cr, MЈ = Fe, Cr͒ 1,2,8-12 the three-dimensional ͑3D͒ M-MЈ network is formed in the face-centered cubic ͑Fm3m; Z =4͒ structure. In addition, the dimensionality of the M-MЈ network can be controlled by the ligand substitution: for example, Mn 9 ͓W͑CN͒ 8 ͔ · 24C 2 H 5 OH · 12C 2 H 5 OH has a zero-dimensional ͑0D͒ structure, 13 while Cs͓Co͑3-CNpy͒ 2 ͔W͑CN͒ 8 ·H 2 O ͑CNpy= cyanopyridine͒ has a two-dimensional ͑2D͒ Co-W network. 5 A characteristic feature of the CBMC is the thermally and photoinduced chargetransfer ͑CT͒ transition, i.e., cooperative charge transfer between the neighboring metal ions, M and MЈ.…”

Section: Introductionmentioning

confidence: 99%

Charge-transfer transition in two-dimensionalCs[Co(3−cyanopyridine)2][W
Kim
¹
,
Ohishi
²
,
Moritomo
³

et al. 2007
Phys. Rev. B
6
0
3
0
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The structural properties were investigated for a two-dimensional cobalt octacyanotungsten, which shows temperature-and photoinduced charge-transfer ͑CT͒ transitions, by means of the synchrotron-radiation x-ray powder diffraction. We have found that the Co-W sheet nearly keeps the shape, but enlarges in size, at the CT transition from the Co 3+ -W 4+ configuration to the Co 2+ -W 5+ configuration. Based on the systematic investigation of the thermal treatment and photoirradiation effects on the structural properties, we will discuss the mechanism for the photoinduced CT transition.

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A High-Spin Cyanide-Bridged Mn₉W₆ Cluster (S = ³⁹/₂) with a Full-Capped Cubane Structure

Cited by 366 publications

References 25 publications

Field-Induced Slow Magnetic Relaxation in Mn_9W_6 Cluster-Based Compound

Field-Induced Slow Magnetic Relaxation in Mn_9W_6 Cluster-Based Compound

Variation of Heterometallic Structural Motifs Based on [W(CN)₈]³⁻ Anions and Mn^II Ions as a Function of Synthetic Conditions

Charge-transfer transition in two-dimensionalCs[Co(3−cyanopyridine)2][W
Kim
¹
,
Ohishi
²
,
Moritomo
³

et al. 2007
Phys. Rev. B
6
0
3
0
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A High-Spin Cyanide-Bridged Mn9W6 Cluster (S = 39/2) with a Full-Capped Cubane Structure

Cited by 366 publications

References 25 publications

Field-Induced Slow Magnetic Relaxation in Mn_9W_6 Cluster-Based Compound

Field-Induced Slow Magnetic Relaxation in Mn_9W_6 Cluster-Based Compound

Variation of Heterometallic Structural Motifs Based on [W(CN)8]3− Anions and MnII Ions as a Function of Synthetic Conditions

Charge-transfer transition in two-dimensionalCs[Co(3−cyanopyridine)2][WKim1, Ohishi2, Moritomo3 et al. 2007Phys. Rev. B6030View full textAdd to dashboardCite

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A High-Spin Cyanide-Bridged Mn₉W₆ Cluster (S = ³⁹/₂) with a Full-Capped Cubane Structure

Variation of Heterometallic Structural Motifs Based on [W(CN)₈]³⁻ Anions and Mn^II Ions as a Function of Synthetic Conditions

Charge-transfer transition in two-dimensionalCs[Co(3−cyanopyridine)2][W
Kim
¹
,
Ohishi
²
,
Moritomo
³

et al. 2007
Phys. Rev. B
6
0
3
0
View full text Add to dashboard Cite