Cyanido‐Bridged Fe II –M I Dimetallic Hofmann‐Like Spin‐Crossover Coordination Polymers Based on 2,6‐Naphthyridine
Two new 3D spin‐crossover (SCO) Hofmann‐type coordination polymers {Fe(2,6‐naphthy)[Ag(CN) 2 ][Ag 2 (CN) 3 ]} ( 1 ; 2,6‐naphthy = 2,6‐naphthyridine) and {Fe(2,6‐naphthy)[Au(CN) 2 ] 2 } · 0.5PhNO 2 ( 2 ) were synthesized and characterized. Both derivatives are made up of infinite stacks of {Fe[Ag(CN)...
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Published in | European journal of inorganic chemistry Vol. 2018; no. 3-4; pp. 289 - 296 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
31.01.2018
|
Online Access | Get full text |
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Summary: | Two new 3D spin‐crossover (SCO) Hofmann‐type coordination polymers {Fe(2,6‐naphthy)[Ag(CN)
2
][Ag
2
(CN)
3
]} (
1
; 2,6‐naphthy = 2,6‐naphthyridine) and {Fe(2,6‐naphthy)[Au(CN)
2
]
2
}
·
0.5PhNO
2
(
2
) were synthesized and characterized. Both derivatives are made up of infinite stacks of {Fe[Ag(CN)
2
]
2
[Ag
2
(CN)
3
]}
n
and {Fe[Au(CN)
2
]
2
}
n
layered grids connected by pillars of 2,6‐naphthy ligands coordinated to the axial positions of the Fe
II
centers of alternate layers. The in situ generated [Ag
2
(CN)
3
]
–
linkers define wide rectangular windows that favor the interpenetration of three identical 3D networks, strong argentophilic interactions between them, and the generation of a densely packed structure without accessible void spaces. In contrast, the smaller rhombus‐shaped window in
2
affords a structure made up of doubly interpenetrated 3D networks with strong aurophilic interactions between them and accessible voids partially occupied by nitrobenzene molecules. Compound
1
displays a relatively abrupt two‐step SCO in the temperature interval 150–215 K, whereas
2
features an incomplete one‐step SCO behavior (
T
1/2
= 166 K) that extends over 150 K. |
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ISSN: | 1434-1948 1099-0682 |
DOI: | 10.1002/ejic.201700920 |