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Chiral cyanido-bridged Mn-Nb magnets including halogen-bonds
Three-dimensional cyanido-bridged bimetallic assemblies [Mn II (4-Xpy) 4 ] 2 [Nb IV (CN) 8 ]· n H 2 O (4-Xpy: 4-halopyridine; X = I and n = 0, ( 1 ); X = Cl and n = 0.5, ( 2 )) are synthesized. 1 and 2 have chiral and achiral structures, respectively. The chiral structure of 1 is composed of achiral...
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| Published in: | CrystEngComm 2018, Vol.2 (45), p.7236-7241 |
|---|---|
| Main Authors: | , , , , , |
| Format: | Article |
| Language: | English |
| Subjects: | |
| Citations: | Items that this one cites Items that cite this one |
| Online Access: | Get full text |
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| Summary: | Three-dimensional cyanido-bridged bimetallic assemblies [Mn
II
(4-Xpy)
4
]
2
[Nb
IV
(CN)
8
]·
n
H
2
O (4-Xpy: 4-halopyridine; X = I and
n
= 0, (
1
); X = Cl and
n
= 0.5, (
2
)) are synthesized.
1
and
2
have chiral and achiral structures, respectively. The chiral structure of
1
is composed of achiral building blocks, which lead to an enantiopure compound through a spontaneous resolution process. In the crystal structure of
1
, the halogen bonds between 4-Ipy and cyanide distort the structure, lowering the crystal symmetry. Both
1
and
2
show ferrimagnetism with Curie temperatures (
T
C
) of 22 K and 28 K, respectively. Due to the chiral and polar structure in the
I
4
1
space group,
1
exhibits SHG phenomena, while such nonlinear optical phenomena are quenched in
2
due to its centrosymmetry.
Chiral and achiral three-dimensional cyanido-bridged metal assemblies with 4-halopyridine, [Mn
II
(4-Xpy)
4
]
2
[Nb
IV
(CN)
8
] (X = I,
1
; X = Cl,
2
), are prepared.
1
and
2
show ferrimagnetism with
T
C
of 22 and 28 K, respectively. Chiral compound
1
exhibits second-harmonic generation. |
|---|---|
| ISSN: | 1466-8033 1466-8033 |
| DOI: | 10.1039/c8ce01353e |