Structural transformations in cobalt() coordination polymers constructed from flexible ,-bis(3-pyridylmethyl)sebacoamide and benzene-1,3,5-tricarboxylic acid
Hydro(solvo)thermal reactions of cobalt( ii ) salts, N , N′ -bis(3-pyridylmethyl)sebacoamide ( L ), and benzene-1,3,5-tricarboxylic acid (1,3,5-H 3 BTC) in water afforded {[Co( L )(1,3,5-HBTC)]·H 2 O} n 1 and {[Co 2 ( L ) 2 (1,3,5-HBTC) 2 (H 2 O) 4 ]·9H 2 O} n 2 , whereas those in MeOH and MeOH/H 2...
Saved in:
| Published in | CrystEngComm Vol. 24; no. 22; pp. 412 - 4127 |
|---|---|
| Main Authors | , , , |
| Format | Journal Article |
| Published |
06.06.2022
|
| Online Access | Get full text |
Cover
Loading…
| Summary: | Hydro(solvo)thermal reactions of cobalt(
ii
) salts,
N
,
N′
-bis(3-pyridylmethyl)sebacoamide (
L
), and benzene-1,3,5-tricarboxylic acid (1,3,5-H
3
BTC) in water afforded {[Co(
L
)(1,3,5-HBTC)]·H
2
O}
n
1
and {[Co
2
(
L
)
2
(1,3,5-HBTC)
2
(H
2
O)
4
]·9H
2
O}
n
2
, whereas those in MeOH and MeOH/H
2
O gave {[Co
3
(
L
)(1,3,5-BTC)
2
(CH
3
OH)
5
]·5CH
3
OH}
n
3
and {[Co
1.5
(
L
)
0.5
(1,3,5-BTC)(CH
3
OH)(H
2
O)
3
]·H
2
O}
n
4
, respectively, which have been structurally characterized by using single-crystal X-ray diffraction. Complex
1
displays a two-dimensional (2D) network with the {4
2
·6
7
·8}{4
2
·6}-3,5L2 topology, and complexes
2
and
3
are three-dimensional (3D) frameworks with the {6
5
·8}-
cds
topology and a new topology with a point symbol of {5·6·7}{5·6·8}
2
{5
2
·6
2
·78
2
·9
3
}, respectively, while
4
shows a 2D layer with the {6
3
}-
hcb
topology, demonstrating that the concentration of the reagent and the solvent system are important in determining the structural diversity. Irreversible structural transformations from
1
to
3
and
2
to
3
under hydro(solvo)thermal conditions are observed and discussed, showing that the flexible nature of the spacer ligands is important in promoting the structural transformations.
Hydro(solvo)thermal reactions of cobalt(
ii
) salts,
N
,
N′
-bis(3-pyridylmethyl)sebacoamide, and benzene-1,3,5-tricarboxylic acid afforded diverse coordination polymers that exhibit structural transformations. |
|---|---|
| Bibliography: | (Fig. S10-S13). CCDC no. https://doi.org/10.1039/d2ce00308b Electronic supplementary information (ESI) available: PXRD patterns for 1-3 1-4 (Fig. S1-S4, S14, and S15). Hydrogen bonds (Table S1 and Fig. S5-S8). conformations contain the supplementary crystallographic data for this paper. For ESI and crystallographic data in CIF or other electronic format see DOI (Fig. S9). TGA properties for 2156145-2156148 L |
| ISSN: | 1466-8033 |
| DOI: | 10.1039/d2ce00308b |