Copper(II) compounds extended by 5-carboxysalicylaldehyde and its Schiff bases: Interplay of two metal-binding sites and intermolecular stacking contributing to their network and bulk structures

Reki Sakamoto, Masaaki Ohba, Nobuo Fukita, Kazuhiro Takahashi, Hisashi Okawa, Laurence K. Thompson

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

5-Carboxysalicylaldehyde (H2casal) formed two mixed-ligand complexes, [Cu(Hcasal)(bpy)]ClO4 (1) and [Cu(casal)-(bpy)]·2H2O (2) (bpy=2,2′-bipyridine) and the Schiff bases H2L1 and H2L2 derived by condensing H2casal with N2N-dimethylethylenediamine and bis(3-aminopropyl)amine, respectively, formed [Cu(L1)]·0.25H2O (3) and [Cu(L2)]·H2O (4), respectively. X-Ray crystallographic studies were done for 1, [Cu(casal)(bpy)(MeOH)] (2′), [Cu(L1)]·4H2O (3′) and 4. 1: Monoclinic, space group C2/c, a = 18.457(5), b = 19.215(5), c = 12.237(3) Å, α = 90, β = 121.76(2), γ = 90°, V = 3690(1) Å3, and Z = 8. It has a dimeric structure with a perchlorato bridge between two [Cu(Hcasal)(bpy)]+ moieties. In the bulk the dimeric units are assembled by interligand noncovalent interactions providing a pseudo 2-D sheet. 2′: Monoclinic, space group P21/m, a = 9.791(4), b = 6.850(4), c = 25.56(1) Å, α = 90, β = 98.99(3), γ = 90°,V = 1692(1) Å3, and Z = 4. The casal2- combines one copper at the mixed-ligand site and the carboxylato group unidentately coordinates to the adjacent molecule, providing a 1-D zipper-like chain. The 1-D chains are further assembled through the interchain bpy/bpy stacking to form a pseudo 2-D network extended on the bc plane. 3′: Tetragonal, space group I41/a, a = b = 16.006(3), c = 27.745(7) Å, α = β= γ = 90°, V = 7108(2) Å3, and Z = 16. It has a 1-D helical structure extended by Cu-NNO(spacer)OO-Cu linkages along c axis (Fig. 6): The nearest Cu-Cu separation in the chain is 9.60 Å. The four water molecules exist in the helical column but are readily removed in the air. 4: Monoclinic, space group P21/c, a = 9.149(6),b= 17.566(6), c= 11.004(6) Å, α = 90, β = 110.03(4), γ = 90°, V = 1661(1) A°3, and Z = 4. It has a 1-D zigzag chain structure extended by Cu-NNNO(spacer)O-Cu linkages. Further, the 1-D chains align through noncovalent interchain interaction to provide a pseudo 2-D sheet. The interplay of the two dissimilar metal-binding sites of H2casal and its Schiff bases and the intermolecular noncovalent interaction contributing to the network and bulk structures of the complexes are discussed.

Original languageEnglish
Pages (from-to)2365-2373
Number of pages9
JournalBulletin of the Chemical Society of Japan
Volume71
Issue number10
DOIs
Publication statusPublished - Jan 1 1998

Fingerprint

Copper compounds
Schiff Bases
Metals
Binding Sites
Ligands
Dissimilar metals
Molecules
Fasteners
Copper
X rays
Water
Air
perchlorate
dipropylenetriame
dimethylethylenediamine

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

Cite this

@article{cf2cba219bbf43aebccf46abe7f48dfc,
title = "Copper(II) compounds extended by 5-carboxysalicylaldehyde and its Schiff bases: Interplay of two metal-binding sites and intermolecular stacking contributing to their network and bulk structures",
abstract = "5-Carboxysalicylaldehyde (H2casal) formed two mixed-ligand complexes, [Cu(Hcasal)(bpy)]ClO4 (1) and [Cu(casal)-(bpy)]·2H2O (2) (bpy=2,2′-bipyridine) and the Schiff bases H2L1 and H2L2 derived by condensing H2casal with N2N-dimethylethylenediamine and bis(3-aminopropyl)amine, respectively, formed [Cu(L1)]·0.25H2O (3) and [Cu(L2)]·H2O (4), respectively. X-Ray crystallographic studies were done for 1, [Cu(casal)(bpy)(MeOH)] (2′), [Cu(L1)]·4H2O (3′) and 4. 1: Monoclinic, space group C2/c, a = 18.457(5), b = 19.215(5), c = 12.237(3) {\AA}, α = 90, β = 121.76(2), γ = 90°, V = 3690(1) {\AA}3, and Z = 8. It has a dimeric structure with a perchlorato bridge between two [Cu(Hcasal)(bpy)]+ moieties. In the bulk the dimeric units are assembled by interligand noncovalent interactions providing a pseudo 2-D sheet. 2′: Monoclinic, space group P21/m, a = 9.791(4), b = 6.850(4), c = 25.56(1) {\AA}, α = 90, β = 98.99(3), γ = 90°,V = 1692(1) {\AA}3, and Z = 4. The casal2- combines one copper at the mixed-ligand site and the carboxylato group unidentately coordinates to the adjacent molecule, providing a 1-D zipper-like chain. The 1-D chains are further assembled through the interchain bpy/bpy stacking to form a pseudo 2-D network extended on the bc plane. 3′: Tetragonal, space group I41/a, a = b = 16.006(3), c = 27.745(7) {\AA}, α = β= γ = 90°, V = 7108(2) {\AA}3, and Z = 16. It has a 1-D helical structure extended by Cu-NNO(spacer)OO-Cu linkages along c axis (Fig. 6): The nearest Cu-Cu separation in the chain is 9.60 {\AA}. The four water molecules exist in the helical column but are readily removed in the air. 4: Monoclinic, space group P21/c, a = 9.149(6),b= 17.566(6), c= 11.004(6) {\AA}, α = 90, β = 110.03(4), γ = 90°, V = 1661(1) A°3, and Z = 4. It has a 1-D zigzag chain structure extended by Cu-NNNO(spacer)O-Cu linkages. Further, the 1-D chains align through noncovalent interchain interaction to provide a pseudo 2-D sheet. The interplay of the two dissimilar metal-binding sites of H2casal and its Schiff bases and the intermolecular noncovalent interaction contributing to the network and bulk structures of the complexes are discussed.",
author = "Reki Sakamoto and Masaaki Ohba and Nobuo Fukita and Kazuhiro Takahashi and Hisashi Okawa and Thompson, {Laurence K.}",
year = "1998",
month = "1",
day = "1",
doi = "10.1246/bcsj.71.2365",
language = "English",
volume = "71",
pages = "2365--2373",
journal = "Bulletin of the Chemical Society of Japan",
issn = "0009-2673",
publisher = "The Chemical Society of Japan",
number = "10",

}

TY - JOUR

T1 - Copper(II) compounds extended by 5-carboxysalicylaldehyde and its Schiff bases

T2 - Interplay of two metal-binding sites and intermolecular stacking contributing to their network and bulk structures

AU - Sakamoto, Reki

AU - Ohba, Masaaki

AU - Fukita, Nobuo

AU - Takahashi, Kazuhiro

AU - Okawa, Hisashi

AU - Thompson, Laurence K.

PY - 1998/1/1

Y1 - 1998/1/1

N2 - 5-Carboxysalicylaldehyde (H2casal) formed two mixed-ligand complexes, [Cu(Hcasal)(bpy)]ClO4 (1) and [Cu(casal)-(bpy)]·2H2O (2) (bpy=2,2′-bipyridine) and the Schiff bases H2L1 and H2L2 derived by condensing H2casal with N2N-dimethylethylenediamine and bis(3-aminopropyl)amine, respectively, formed [Cu(L1)]·0.25H2O (3) and [Cu(L2)]·H2O (4), respectively. X-Ray crystallographic studies were done for 1, [Cu(casal)(bpy)(MeOH)] (2′), [Cu(L1)]·4H2O (3′) and 4. 1: Monoclinic, space group C2/c, a = 18.457(5), b = 19.215(5), c = 12.237(3) Å, α = 90, β = 121.76(2), γ = 90°, V = 3690(1) Å3, and Z = 8. It has a dimeric structure with a perchlorato bridge between two [Cu(Hcasal)(bpy)]+ moieties. In the bulk the dimeric units are assembled by interligand noncovalent interactions providing a pseudo 2-D sheet. 2′: Monoclinic, space group P21/m, a = 9.791(4), b = 6.850(4), c = 25.56(1) Å, α = 90, β = 98.99(3), γ = 90°,V = 1692(1) Å3, and Z = 4. The casal2- combines one copper at the mixed-ligand site and the carboxylato group unidentately coordinates to the adjacent molecule, providing a 1-D zipper-like chain. The 1-D chains are further assembled through the interchain bpy/bpy stacking to form a pseudo 2-D network extended on the bc plane. 3′: Tetragonal, space group I41/a, a = b = 16.006(3), c = 27.745(7) Å, α = β= γ = 90°, V = 7108(2) Å3, and Z = 16. It has a 1-D helical structure extended by Cu-NNO(spacer)OO-Cu linkages along c axis (Fig. 6): The nearest Cu-Cu separation in the chain is 9.60 Å. The four water molecules exist in the helical column but are readily removed in the air. 4: Monoclinic, space group P21/c, a = 9.149(6),b= 17.566(6), c= 11.004(6) Å, α = 90, β = 110.03(4), γ = 90°, V = 1661(1) A°3, and Z = 4. It has a 1-D zigzag chain structure extended by Cu-NNNO(spacer)O-Cu linkages. Further, the 1-D chains align through noncovalent interchain interaction to provide a pseudo 2-D sheet. The interplay of the two dissimilar metal-binding sites of H2casal and its Schiff bases and the intermolecular noncovalent interaction contributing to the network and bulk structures of the complexes are discussed.

AB - 5-Carboxysalicylaldehyde (H2casal) formed two mixed-ligand complexes, [Cu(Hcasal)(bpy)]ClO4 (1) and [Cu(casal)-(bpy)]·2H2O (2) (bpy=2,2′-bipyridine) and the Schiff bases H2L1 and H2L2 derived by condensing H2casal with N2N-dimethylethylenediamine and bis(3-aminopropyl)amine, respectively, formed [Cu(L1)]·0.25H2O (3) and [Cu(L2)]·H2O (4), respectively. X-Ray crystallographic studies were done for 1, [Cu(casal)(bpy)(MeOH)] (2′), [Cu(L1)]·4H2O (3′) and 4. 1: Monoclinic, space group C2/c, a = 18.457(5), b = 19.215(5), c = 12.237(3) Å, α = 90, β = 121.76(2), γ = 90°, V = 3690(1) Å3, and Z = 8. It has a dimeric structure with a perchlorato bridge between two [Cu(Hcasal)(bpy)]+ moieties. In the bulk the dimeric units are assembled by interligand noncovalent interactions providing a pseudo 2-D sheet. 2′: Monoclinic, space group P21/m, a = 9.791(4), b = 6.850(4), c = 25.56(1) Å, α = 90, β = 98.99(3), γ = 90°,V = 1692(1) Å3, and Z = 4. The casal2- combines one copper at the mixed-ligand site and the carboxylato group unidentately coordinates to the adjacent molecule, providing a 1-D zipper-like chain. The 1-D chains are further assembled through the interchain bpy/bpy stacking to form a pseudo 2-D network extended on the bc plane. 3′: Tetragonal, space group I41/a, a = b = 16.006(3), c = 27.745(7) Å, α = β= γ = 90°, V = 7108(2) Å3, and Z = 16. It has a 1-D helical structure extended by Cu-NNO(spacer)OO-Cu linkages along c axis (Fig. 6): The nearest Cu-Cu separation in the chain is 9.60 Å. The four water molecules exist in the helical column but are readily removed in the air. 4: Monoclinic, space group P21/c, a = 9.149(6),b= 17.566(6), c= 11.004(6) Å, α = 90, β = 110.03(4), γ = 90°, V = 1661(1) A°3, and Z = 4. It has a 1-D zigzag chain structure extended by Cu-NNNO(spacer)O-Cu linkages. Further, the 1-D chains align through noncovalent interchain interaction to provide a pseudo 2-D sheet. The interplay of the two dissimilar metal-binding sites of H2casal and its Schiff bases and the intermolecular noncovalent interaction contributing to the network and bulk structures of the complexes are discussed.

UR - http://www.scopus.com/inward/record.url?scp=0008845893&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0008845893&partnerID=8YFLogxK

U2 - 10.1246/bcsj.71.2365

DO - 10.1246/bcsj.71.2365

M3 - Article

AN - SCOPUS:0008845893

VL - 71

SP - 2365

EP - 2373

JO - Bulletin of the Chemical Society of Japan

JF - Bulletin of the Chemical Society of Japan

SN - 0009-2673

IS - 10

ER -