12 research outputs found
Comprehensive Study on Mutual Interplay of Multiple V‑Shaped Ligands on the Helical Nature of a Series of Coordination Polymers and Their Properties
No full textV-shaped ligands are commonly used
for helical coordination polymer synthesis. However, employment of
multiple V-shaped ligands does not always lead to a helical network.
The mutual interplay of two V-shaped ligands, which is neither easily
predictable nor well documented, plays a major role directing the
self-assembly of the resultant network. We report here the construction
of a series of novel coordination polymers {[Ni(OBA)(H<sub>2</sub>MDP)(H<sub>2</sub>O)]·(DMF)<sub>3</sub>}<sub><i>n</i></sub> (<b>1</b>),{[Ni(FBA)(H<sub>2</sub>MDP)]·(H<sub>2</sub>O)<sub>3</sub>·(DMF)}<sub><i>n</i></sub> (<b>2</b>),{[Ni<sub>2</sub>(IPA)<sub>2</sub>(H<sub>2</sub>MDP)<sub>2</sub>(H<sub>2</sub>O)]·(H<sub>2</sub>O)(DMF)}<sub><i>n</i></sub> (<b>3</b>),{[Ni(ADA)(H2MDP)]·(MeOH)}<sub><i>n</i></sub> (<b>4</b>),[Ni(TNBA)(H<sub>2</sub>MDP)<sub>2</sub>]<sub><i>n</i></sub> (<b>5</b>),
{[Ni(PPA)(H<sub>2</sub>MDP)<sub>2</sub>]·(H<sub>2</sub>O)<sub>2</sub>}<sub><i>n</i></sub> (<b>6</b>), {[Ni(HDPA)<sub>2</sub>(H<sub>2</sub>MDP)<sub>2</sub>]}<sub><i>n</i></sub> (<b>7</b>), and [Ni(SBA)(H<sub>2</sub>MDP)]<sub><i>n</i></sub> (<b>8</b>) {where H<sub>2</sub>OBA = 4,4′<b>-</b>oxybis(benzoic acid), H<sub>2</sub>FBA = 4,4′-(hexafluoroisopropylidene)bis(benzoic
acid), H<sub>2</sub>IPA = isophthalic acid, H<sub>2</sub>ADA =1,3-adamantanediacetic
acid, H<sub>2</sub>TNBA = 5,5′-dithiobis(2-nitrobenzoic acid),
H<sub>2</sub>PPA 1,4-phenylenedipropionic acid, H<sub>2</sub>DPA =
diphenic acid H<sub>2</sub>SBA= 4,4′-sulfonyldibenzoic acid}
using a combination of mixed V-shaped ligands. The deployment of bent
ligands yields a rich variety of network topologies with various helical
motifs comprising both the linkers and the individual one. A detailed
gas sorption study of porous networks, as evident from the presence
of distinct nanoporous voids and channels inside the structures, is
also investigated. Furthermore, chirality associated with helical
networks and their role as potential functional materials are verified
by solid state circular dichroism spectra
Comprehensive Study on Mutual Interplay of Multiple V‑Shaped Ligands on the Helical Nature of a Series of Coordination Polymers and Their Properties
No full textV-shaped ligands are commonly used
for helical coordination polymer synthesis. However, employment of
multiple V-shaped ligands does not always lead to a helical network.
The mutual interplay of two V-shaped ligands, which is neither easily
predictable nor well documented, plays a major role directing the
self-assembly of the resultant network. We report here the construction
of a series of novel coordination polymers {[Ni(OBA)(H<sub>2</sub>MDP)(H<sub>2</sub>O)]·(DMF)<sub>3</sub>}<sub><i>n</i></sub> (<b>1</b>),{[Ni(FBA)(H<sub>2</sub>MDP)]·(H<sub>2</sub>O)<sub>3</sub>·(DMF)}<sub><i>n</i></sub> (<b>2</b>),{[Ni<sub>2</sub>(IPA)<sub>2</sub>(H<sub>2</sub>MDP)<sub>2</sub>(H<sub>2</sub>O)]·(H<sub>2</sub>O)(DMF)}<sub><i>n</i></sub> (<b>3</b>),{[Ni(ADA)(H2MDP)]·(MeOH)}<sub><i>n</i></sub> (<b>4</b>),[Ni(TNBA)(H<sub>2</sub>MDP)<sub>2</sub>]<sub><i>n</i></sub> (<b>5</b>),
{[Ni(PPA)(H<sub>2</sub>MDP)<sub>2</sub>]·(H<sub>2</sub>O)<sub>2</sub>}<sub><i>n</i></sub> (<b>6</b>), {[Ni(HDPA)<sub>2</sub>(H<sub>2</sub>MDP)<sub>2</sub>]}<sub><i>n</i></sub> (<b>7</b>), and [Ni(SBA)(H<sub>2</sub>MDP)]<sub><i>n</i></sub> (<b>8</b>) {where H<sub>2</sub>OBA = 4,4′<b>-</b>oxybis(benzoic acid), H<sub>2</sub>FBA = 4,4′-(hexafluoroisopropylidene)bis(benzoic
acid), H<sub>2</sub>IPA = isophthalic acid, H<sub>2</sub>ADA =1,3-adamantanediacetic
acid, H<sub>2</sub>TNBA = 5,5′-dithiobis(2-nitrobenzoic acid),
H<sub>2</sub>PPA 1,4-phenylenedipropionic acid, H<sub>2</sub>DPA =
diphenic acid H<sub>2</sub>SBA= 4,4′-sulfonyldibenzoic acid}
using a combination of mixed V-shaped ligands. The deployment of bent
ligands yields a rich variety of network topologies with various helical
motifs comprising both the linkers and the individual one. A detailed
gas sorption study of porous networks, as evident from the presence
of distinct nanoporous voids and channels inside the structures, is
also investigated. Furthermore, chirality associated with helical
networks and their role as potential functional materials are verified
by solid state circular dichroism spectra
Comprehensive Study on Mutual Interplay of Multiple V‑Shaped Ligands on the Helical Nature of a Series of Coordination Polymers and Their Properties
No full textV-shaped ligands are commonly used
for helical coordination polymer synthesis. However, employment of
multiple V-shaped ligands does not always lead to a helical network.
The mutual interplay of two V-shaped ligands, which is neither easily
predictable nor well documented, plays a major role directing the
self-assembly of the resultant network. We report here the construction
of a series of novel coordination polymers {[Ni(OBA)(H<sub>2</sub>MDP)(H<sub>2</sub>O)]·(DMF)<sub>3</sub>}<sub><i>n</i></sub> (<b>1</b>),{[Ni(FBA)(H<sub>2</sub>MDP)]·(H<sub>2</sub>O)<sub>3</sub>·(DMF)}<sub><i>n</i></sub> (<b>2</b>),{[Ni<sub>2</sub>(IPA)<sub>2</sub>(H<sub>2</sub>MDP)<sub>2</sub>(H<sub>2</sub>O)]·(H<sub>2</sub>O)(DMF)}<sub><i>n</i></sub> (<b>3</b>),{[Ni(ADA)(H2MDP)]·(MeOH)}<sub><i>n</i></sub> (<b>4</b>),[Ni(TNBA)(H<sub>2</sub>MDP)<sub>2</sub>]<sub><i>n</i></sub> (<b>5</b>),
{[Ni(PPA)(H<sub>2</sub>MDP)<sub>2</sub>]·(H<sub>2</sub>O)<sub>2</sub>}<sub><i>n</i></sub> (<b>6</b>), {[Ni(HDPA)<sub>2</sub>(H<sub>2</sub>MDP)<sub>2</sub>]}<sub><i>n</i></sub> (<b>7</b>), and [Ni(SBA)(H<sub>2</sub>MDP)]<sub><i>n</i></sub> (<b>8</b>) {where H<sub>2</sub>OBA = 4,4′<b>-</b>oxybis(benzoic acid), H<sub>2</sub>FBA = 4,4′-(hexafluoroisopropylidene)bis(benzoic
acid), H<sub>2</sub>IPA = isophthalic acid, H<sub>2</sub>ADA =1,3-adamantanediacetic
acid, H<sub>2</sub>TNBA = 5,5′-dithiobis(2-nitrobenzoic acid),
H<sub>2</sub>PPA 1,4-phenylenedipropionic acid, H<sub>2</sub>DPA =
diphenic acid H<sub>2</sub>SBA= 4,4′-sulfonyldibenzoic acid}
using a combination of mixed V-shaped ligands. The deployment of bent
ligands yields a rich variety of network topologies with various helical
motifs comprising both the linkers and the individual one. A detailed
gas sorption study of porous networks, as evident from the presence
of distinct nanoporous voids and channels inside the structures, is
also investigated. Furthermore, chirality associated with helical
networks and their role as potential functional materials are verified
by solid state circular dichroism spectra
Comprehensive Study on Mutual Interplay of Multiple V‑Shaped Ligands on the Helical Nature of a Series of Coordination Polymers and Their Properties
No full textV-shaped ligands are commonly used
for helical coordination polymer synthesis. However, employment of
multiple V-shaped ligands does not always lead to a helical network.
The mutual interplay of two V-shaped ligands, which is neither easily
predictable nor well documented, plays a major role directing the
self-assembly of the resultant network. We report here the construction
of a series of novel coordination polymers {[Ni(OBA)(H<sub>2</sub>MDP)(H<sub>2</sub>O)]·(DMF)<sub>3</sub>}<sub><i>n</i></sub> (<b>1</b>),{[Ni(FBA)(H<sub>2</sub>MDP)]·(H<sub>2</sub>O)<sub>3</sub>·(DMF)}<sub><i>n</i></sub> (<b>2</b>),{[Ni<sub>2</sub>(IPA)<sub>2</sub>(H<sub>2</sub>MDP)<sub>2</sub>(H<sub>2</sub>O)]·(H<sub>2</sub>O)(DMF)}<sub><i>n</i></sub> (<b>3</b>),{[Ni(ADA)(H2MDP)]·(MeOH)}<sub><i>n</i></sub> (<b>4</b>),[Ni(TNBA)(H<sub>2</sub>MDP)<sub>2</sub>]<sub><i>n</i></sub> (<b>5</b>),
{[Ni(PPA)(H<sub>2</sub>MDP)<sub>2</sub>]·(H<sub>2</sub>O)<sub>2</sub>}<sub><i>n</i></sub> (<b>6</b>), {[Ni(HDPA)<sub>2</sub>(H<sub>2</sub>MDP)<sub>2</sub>]}<sub><i>n</i></sub> (<b>7</b>), and [Ni(SBA)(H<sub>2</sub>MDP)]<sub><i>n</i></sub> (<b>8</b>) {where H<sub>2</sub>OBA = 4,4′<b>-</b>oxybis(benzoic acid), H<sub>2</sub>FBA = 4,4′-(hexafluoroisopropylidene)bis(benzoic
acid), H<sub>2</sub>IPA = isophthalic acid, H<sub>2</sub>ADA =1,3-adamantanediacetic
acid, H<sub>2</sub>TNBA = 5,5′-dithiobis(2-nitrobenzoic acid),
H<sub>2</sub>PPA 1,4-phenylenedipropionic acid, H<sub>2</sub>DPA =
diphenic acid H<sub>2</sub>SBA= 4,4′-sulfonyldibenzoic acid}
using a combination of mixed V-shaped ligands. The deployment of bent
ligands yields a rich variety of network topologies with various helical
motifs comprising both the linkers and the individual one. A detailed
gas sorption study of porous networks, as evident from the presence
of distinct nanoporous voids and channels inside the structures, is
also investigated. Furthermore, chirality associated with helical
networks and their role as potential functional materials are verified
by solid state circular dichroism spectra
Comprehensive Study on Mutual Interplay of Multiple V‑Shaped Ligands on the Helical Nature of a Series of Coordination Polymers and Their Properties
No full textV-shaped ligands are commonly used
for helical coordination polymer synthesis. However, employment of
multiple V-shaped ligands does not always lead to a helical network.
The mutual interplay of two V-shaped ligands, which is neither easily
predictable nor well documented, plays a major role directing the
self-assembly of the resultant network. We report here the construction
of a series of novel coordination polymers {[Ni(OBA)(H<sub>2</sub>MDP)(H<sub>2</sub>O)]·(DMF)<sub>3</sub>}<sub><i>n</i></sub> (<b>1</b>),{[Ni(FBA)(H<sub>2</sub>MDP)]·(H<sub>2</sub>O)<sub>3</sub>·(DMF)}<sub><i>n</i></sub> (<b>2</b>),{[Ni<sub>2</sub>(IPA)<sub>2</sub>(H<sub>2</sub>MDP)<sub>2</sub>(H<sub>2</sub>O)]·(H<sub>2</sub>O)(DMF)}<sub><i>n</i></sub> (<b>3</b>),{[Ni(ADA)(H2MDP)]·(MeOH)}<sub><i>n</i></sub> (<b>4</b>),[Ni(TNBA)(H<sub>2</sub>MDP)<sub>2</sub>]<sub><i>n</i></sub> (<b>5</b>),
{[Ni(PPA)(H<sub>2</sub>MDP)<sub>2</sub>]·(H<sub>2</sub>O)<sub>2</sub>}<sub><i>n</i></sub> (<b>6</b>), {[Ni(HDPA)<sub>2</sub>(H<sub>2</sub>MDP)<sub>2</sub>]}<sub><i>n</i></sub> (<b>7</b>), and [Ni(SBA)(H<sub>2</sub>MDP)]<sub><i>n</i></sub> (<b>8</b>) {where H<sub>2</sub>OBA = 4,4′<b>-</b>oxybis(benzoic acid), H<sub>2</sub>FBA = 4,4′-(hexafluoroisopropylidene)bis(benzoic
acid), H<sub>2</sub>IPA = isophthalic acid, H<sub>2</sub>ADA =1,3-adamantanediacetic
acid, H<sub>2</sub>TNBA = 5,5′-dithiobis(2-nitrobenzoic acid),
H<sub>2</sub>PPA 1,4-phenylenedipropionic acid, H<sub>2</sub>DPA =
diphenic acid H<sub>2</sub>SBA= 4,4′-sulfonyldibenzoic acid}
using a combination of mixed V-shaped ligands. The deployment of bent
ligands yields a rich variety of network topologies with various helical
motifs comprising both the linkers and the individual one. A detailed
gas sorption study of porous networks, as evident from the presence
of distinct nanoporous voids and channels inside the structures, is
also investigated. Furthermore, chirality associated with helical
networks and their role as potential functional materials are verified
by solid state circular dichroism spectra
Azide-Functionalized Lanthanide-Based Metal–Organic Frameworks Showing Selective CO<sub>2</sub> Gas Adsorption and Postsynthetic Cavity Expansion
No full textWe
report herein selective CO<sub>2</sub> gas adsorption by two
azide-functionalized lanthanide-based metal–organic frameworks
(MOFs). This work also demonstrates that azide-functionalized MOFs
can be used for postsynthetic cavity expansion, further corroborated
by enhanced gas-sorption
data
Azide-Functionalized Lanthanide-Based Metal–Organic Frameworks Showing Selective CO<sub>2</sub> Gas Adsorption and Postsynthetic Cavity Expansion
No full textWe
report herein selective CO<sub>2</sub> gas adsorption by two
azide-functionalized lanthanide-based metal–organic frameworks
(MOFs). This work also demonstrates that azide-functionalized MOFs
can be used for postsynthetic cavity expansion, further corroborated
by enhanced gas-sorption
data
Designing Functional Metal–Organic Frameworks by Imparting a Hexanuclear Copper-Based Secondary Building Unit Specific Properties: Structural Correlation With Magnetic and Photocatalytic Activity
No full textIn
continuation of our research interest in pyrazole-based multifunctional
metal organic frameworks (MOFs), we report here three Cu(II) MOFs
using pyrazole and various aromatic carboxylic acid-based ligands.
The main theme of interest is to design functional MOFs by imparting
a multinuclear metal center as a secondary building unit (SBU). Accordingly,
three MOFs are synthesized based on a hexanuclear Cu-pyrazolate unit
as the SBU with some intriguing structural networks like (4,4) type
herringbone grid or an archetypal Kagomé topology. We have
successfully synthesized functional MOFs by incorporating hexanuclear
Cu-pyrazolate SBU-specific properties viz. magnetism and catalysis,
the central theme of this work. All the MOFs show some photocatalytic
degradation of toxic dye molecules. On the other hand, magnetic behaviors
of <b>MOF-2</b> and <b>MOF-3</b> associated with the Cu<sub>6</sub> unit have also been investigated
Metal-Directed Formation of Molecular Helix, Cage, and Grid Using an Asymmetric Pyridine-Pyrazole Based Bis-Chelating Ligand and Properties
No full textThe present work reports the construction
and self-assembly studies
of molecular helix and polyhedral coordination cages using a pyridine-pyrazole
based asymmetric ligand. Employment of different metals has resulted
in different architectures ranging from a one-dimensional helical
polymer, [2 × 2] grid to a pentanuclear cage. For all the structures,
hydrogen bonding and π–π stacking were found to
be instrumental in bringing additional stability to the polymeric
networks. Furthermore, chirality and magnetic properties of cobalt
and copper complexes have also been investigated
Metal-Directed Formation of Molecular Helix, Cage, and Grid Using an Asymmetric Pyridine-Pyrazole Based Bis-Chelating Ligand and Properties
No full textThe present work reports the construction
and self-assembly studies
of molecular helix and polyhedral coordination cages using a pyridine-pyrazole
based asymmetric ligand. Employment of different metals has resulted
in different architectures ranging from a one-dimensional helical
polymer, [2 × 2] grid to a pentanuclear cage. For all the structures,
hydrogen bonding and π–π stacking were found to
be instrumental in bringing additional stability to the polymeric
networks. Furthermore, chirality and magnetic properties of cobalt
and copper complexes have also been investigated
