1D Zigzag Coordination Polymers of Copper(II) and Nickel(II) with Mixed Ligands − Syntheses and Structures

Abstract

The one-dimensional coordination polymers [Cu(NO 3 ) 2 (2,2Ј-bipy)(4,4Ј-bipy)] n ·2nCH 3 OH (1) and [Ni(tren)(4,4Ј-bipy)] n -(ClO 4 ) 2n (2), have been synthesized by the self-assembly of a copper(II) complex of 2,2Ј-bipy and a nickel(II) complex of tren with 4,4Ј-bipy (2,2Ј-bipy = 2,2Ј-bipyridine, 4,4Ј-bipy = 4,4Ј-bipyridine, and tren = tris-(2-aminoethyl)amine). Their X-ray crystal structures show that the metal ions in 1 and 2 display a distorted octahedral coordination geometry to bind two 4,4Ј-bipy ligands at the cis positions. Each 4,4Ј-bipy links

Structure, Spectra, and DFT Simulation of Nickel Benzazolate Complexes with Tris(2-aminoethyl)amine Ligand

“…The oxygen atom of the benzazolate (O1) is in an equatorial position. The Ni–N tren bond distances (2.102–2.162 Å) are within the range reported for complexes containing the [Ni­(tren)] moiety. − The Ni–N1 bond distances are 2.063, 2.087, 2.099 Å for complexes 1 , 2 , and 3 , respectively. The bond distances Ni–O1 are 2.093, 2.034, and 2.071 Å for 1 , 2 , and 3 , respectively.…”

“…The IR spectra of complexes 1 – 3 show bands at ∼3350 and 3300 cm –1 which are attributed to the ν­(N–H) of the tren ligand. The NH 2 bending mode of the tren ligand appears at ∼1600 cm –1 . Bands corresponding to the benzazolate ligands are also observed in the IR spectra.…”

Structure, Spectra, and DFT Simulation of Nickel Benzazolate Complexes with Tris(2-aminoethyl)amine Ligand

“…The oxygen atom of the benzazolate (O1) is in an equatorial position. The Ni–N tren bond distances (2.102–2.162 Å) are within the range reported for complexes containing the [Ni­(tren)] moiety. − The Ni–N1 bond distances are 2.063, 2.087, 2.099 Å for complexes 1 , 2 , and 3 , respectively. The bond distances Ni–O1 are 2.093, 2.034, and 2.071 Å for 1 , 2 , and 3 , respectively.…”

“…The IR spectra of complexes 1 – 3 show bands at ∼3350 and 3300 cm –1 which are attributed to the ν­(N–H) of the tren ligand. The NH 2 bending mode of the tren ligand appears at ∼1600 cm –1 . Bands corresponding to the benzazolate ligands are also observed in the IR spectra.…”

Anion-Dependent Cu(II) Coordination Polymers: Geometric, Magnetic and Luminescent Properties

“…The bond angles around Cu(II) are 89.0(1)-176.5 (1). These values are within the range for normal octahedral Cu(II) compounds [37,40]. In 2, each pyridine group in the two bpba ligands in the structure is twisted, with angles of 58.0(2) and 72.8(2) • , related to N2 and N5, respectively.…”

“…The two pyridyl nitrogen atoms of the bpba ligand are coordinated to two different Cu(II) ions. Therefore, the Cu(II) atoms and bpba ligands are linked alternatively to afford a 1D zigzag structure along the c-axis (Figure 4) [40]. That is, the 1D chain exhibits a linear structure with a zigzag pitch of 25.860 Å along the axis.…”

Construction of Cylindrical Nanotubular Materials by Self-Assembly of Co(NCS)2 with Bent-Building Blocks Having Diimidazole Rings

“…(Figure ). Recently, the aromatic π−π interaction between supramolecular structures was used to induce novel structures such as double-stranded helices or molecular zippers from single-stranded coordination polymers . In our case, the π−π interaction between 2-D cylindrical layers is induced to construct a 3-D cylindrical structure and acts like walls of channels (Figure ).…”

Structure, Spectra, and DFT Simulation of Nickel Benzazolate Complexes with Tris(2-aminoethyl)amine Ligand

“…The oxygen atom of the benzazolate (O1) is in an equatorial position. The Ni–N tren bond distances (2.102–2.162 Å) are within the range reported for complexes containing the [Ni­(tren)] moiety. − The Ni–N1 bond distances are 2.063, 2.087, 2.099 Å for complexes 1 , 2 , and 3 , respectively. The bond distances Ni–O1 are 2.093, 2.034, and 2.071 Å for 1 , 2 , and 3 , respectively.…”

“…The IR spectra of complexes 1 – 3 show bands at ∼3350 and 3300 cm –1 which are attributed to the ν­(N–H) of the tren ligand. The NH 2 bending mode of the tren ligand appears at ∼1600 cm –1 . Bands corresponding to the benzazolate ligands are also observed in the IR spectra.…”

Anion-Dependent Cu(II) Coordination Polymers: Geometric, Magnetic and Luminescent Properties

“…The bond angles around Cu(II) are 89.0(1)-176.5 (1). These values are within the range for normal octahedral Cu(II) compounds [37,40]. In 2, each pyridine group in the two bpba ligands in the structure is twisted, with angles of 58.0(2) and 72.8(2) • , related to N2 and N5, respectively.…”

“…The two pyridyl nitrogen atoms of the bpba ligand are coordinated to two different Cu(II) ions. Therefore, the Cu(II) atoms and bpba ligands are linked alternatively to afford a 1D zigzag structure along the c-axis (Figure 4) [40]. That is, the 1D chain exhibits a linear structure with a zigzag pitch of 25.860 Å along the axis.…”

Construction of Cylindrical Nanotubular Materials by Self-Assembly of Co(NCS)2 with Bent-Building Blocks Having Diimidazole Rings

“…(Figure ). Recently, the aromatic π−π interaction between supramolecular structures was used to induce novel structures such as double-stranded helices or molecular zippers from single-stranded coordination polymers . In our case, the π−π interaction between 2-D cylindrical layers is induced to construct a 3-D cylindrical structure and acts like walls of channels (Figure ).…”

Structure, Spectra, and DFT Simulation of Nickel Benzazolate Complexes with Tris(2-aminoethyl)amine Ligand

“…The oxygen atom of the benzazolate (O1) is in an equatorial position. The Ni–N tren bond distances (2.102–2.162 Å) are within the range reported for complexes containing the [Ni­(tren)] moiety. − The Ni–N1 bond distances are 2.063, 2.087, 2.099 Å for complexes 1 , 2 , and 3 , respectively. The bond distances Ni–O1 are 2.093, 2.034, and 2.071 Å for 1 , 2 , and 3 , respectively.…”

“…The IR spectra of complexes 1 – 3 show bands at ∼3350 and 3300 cm –1 which are attributed to the ν­(N–H) of the tren ligand. The NH 2 bending mode of the tren ligand appears at ∼1600 cm –1 . Bands corresponding to the benzazolate ligands are also observed in the IR spectra.…”

Anion-Dependent Cu(II) Coordination Polymers: Geometric, Magnetic and Luminescent Properties

“…The bond angles around Cu(II) are 89.0(1)-176.5 (1). These values are within the range for normal octahedral Cu(II) compounds [37,40]. In 2, each pyridine group in the two bpba ligands in the structure is twisted, with angles of 58.0(2) and 72.8(2) • , related to N2 and N5, respectively.…”

“…The two pyridyl nitrogen atoms of the bpba ligand are coordinated to two different Cu(II) ions. Therefore, the Cu(II) atoms and bpba ligands are linked alternatively to afford a 1D zigzag structure along the c-axis (Figure 4) [40]. That is, the 1D chain exhibits a linear structure with a zigzag pitch of 25.860 Å along the axis.…”

Construction of Cylindrical Nanotubular Materials by Self-Assembly of Co(NCS)2 with Bent-Building Blocks Having Diimidazole Rings

“…(Figure ). Recently, the aromatic π−π interaction between supramolecular structures was used to induce novel structures such as double-stranded helices or molecular zippers from single-stranded coordination polymers . In our case, the π−π interaction between 2-D cylindrical layers is induced to construct a 3-D cylindrical structure and acts like walls of channels (Figure ).…”