Synthesis, Structure and Properties of Five-Coordinate Copper(II) Complexes of Pentadentate Ligands with Pyridyl Pendant Arms

McLachlan, Grant A.; Fallon, Gary D.; Martin, R. L.; Spiccia, Leone

doi:10.1021/ic00105a041

Cited by 192 publications

(128 citation statements)

References 0 publications

Supporting

Mentioning

115

Contrasting

Order By: Relevance

“…Each measurement showed a negative Cotton effect with very strong signals at around 280 nm and 720 nm; the latter was due to the d-d transition of Cu ions, 20 suggesting the enantiometric excess of the bulk sample (Fig. 3).…”

mentioning

confidence: 98%

LiCu2[BP2O8(OH)2]: a chiral open-framework copper borophosphate via spontaneous asymmetrical crystallization

Yang

et al. 2013

Dalton Trans.

View full text Add to dashboard Cite

A new chiral copper borophosphate, LiCu 2 [BP 2 O 8 (OH) 2 ] (1), was crystallized from achiral inorganic raw materials in boric acid flux reaction. The structure features a 9-ring channel enclosed by triple right-handed helices. The bulk sample exhibits optical activity confirmed by circular dichroism (CD) spectra, indicating an interesting spontaneous resolution phenomenon.Chiral inorganic microporous materials with distinct porosity and chirality are particularly desirable because of the increasing demand for many applications in enantioselective sorption, separation and asymmetric catalysis. 1 However, it remains a significant challenge to control the synthesis of enantiopure inorganic open framework materials. Considerable efforts have been made to search for such materials, and several synthetic strategies were developed including incorporating chiral moieties or chiral ligands into the building blocks, and introducing a chiral template, solvent or catalyst into the synthetic system. 2 Recent research works on the synthesis of chiral aluminophosphates, 3 germantes 4 and borates 5 suggest that another possible route is to change the framework elements. This hypothesis was supported by a molecular design and calculation result, namely that, in order to obtain energetically stable chiral four-connected zeotype materials, some of the framework atoms should be substituted by other types of atoms such as Be, B, Ge, As or transition metals, etc. 6 It is highly desirable to prepare homochiral porous materials from achiral raw materials due to the high cost and limitation of enantiopure resources. 7 Very recently, two optical active inorganic microporous compounds (C 4 16 is the first chiral borophosphate with intersecting 12-ring channels spontaneously crystallized from an ionothermal system. Although so many chiral borophosphates were synthesized by spontaneous crystallization, none of them showed optical activity in circular dichroism (CD) measurements, which meant that those bulk materials were racemic conglomerates.In this work, we have for the first time identified a new optically active open-framework copper borophosphate compound, † Electronic supplementary information (ESI) available: Details of synthesis, characterization and crystal structure determination, XRD and TG/DSC and magnetic measurements for 1. CCDC 902700. For ESI and crystallographic data in CIF or other electronic format see

show abstract

mentioning

confidence: 98%

LiCu2[BP2O8(OH)2]: a chiral open-framework copper borophosphate via spontaneous asymmetrical crystallization

Yang

et al. 2013

Dalton Trans.

View full text Add to dashboard Cite

show abstract

“…The electronic absorption spectra ( )](ClO4)3․2H2O is a complex with a 5-coordination environment. [20][21][22][23] It has been widely observed that regular and distorted trigonal bipyramidal copper(II) complexes exhibit an absorption band at > 670 nm, whereas square-pyramidal copper(II) complexes show an absorption band at considerably shorter wavelength. [20][21][22] Therefore, the coordination geometry may be considered intermediate between TBP and SP in the solid state.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of New Tetraaza Macrocycles Bearing Two or Four N-Methoxyethyl Pendant Arms and Their Copper(II) and/or Nickel(II) Complexes

Kang¹,

Kim²,

Kwak³

2010

Bulletin of the Korean Chemical Society

View full text Add to dashboard Cite

“…[18][19][20][21] It has been also observed that regular and distorted square-pyramidal copper(II) complexes exhibit a d-d transition band in the region 550-670 nm, whereas trigonal bipyramidal ones show a maximum absorption at > 670 nm. 18,19,[21][22][23] Unfortunately, we could not obtain single crystals of the copper(II) complexes suitable for X-ray work, and their crystal structures have not been investigated. However, the longer wavelengths and the larger molar absorption coefficients for [CuL (Table 2) …”

Section: Methodsmentioning

confidence: 99%

Template Synthesis of Copper(II) Complexes of N₃O-Donor Macrotricycles Containing N-CH₂-N and N-CH₂-O Linkages

Kang¹,

Nam²,

Kim³

2004

Bulletin of the Korean Chemical Society

View full text Add to dashboard Cite

Synthesis, Structure and Properties of Five-Coordinate Copper(II) Complexes of Pentadentate Ligands with Pyridyl Pendant Arms

Cited by 192 publications

References 0 publications

LiCu2[BP2O8(OH)2]: a chiral open-framework copper borophosphate via spontaneous asymmetrical crystallization

LiCu2[BP2O8(OH)2]: a chiral open-framework copper borophosphate via spontaneous asymmetrical crystallization

Synthesis and Characterization of New Tetraaza Macrocycles Bearing Two or Four N-Methoxyethyl Pendant Arms and Their Copper(II) and/or Nickel(II) Complexes

Template Synthesis of Copper(II) Complexes of N₃O-Donor Macrotricycles Containing N-CH₂-N and N-CH₂-O Linkages

Contact Info

Product

Resources

About

Synthesis, Structure and Properties of Five-Coordinate Copper(II) Complexes of Pentadentate Ligands with Pyridyl Pendant Arms

Cited by 192 publications

References 0 publications

LiCu2[BP2O8(OH)2]: a chiral open-framework copper borophosphate via spontaneous asymmetrical crystallization

LiCu2[BP2O8(OH)2]: a chiral open-framework copper borophosphate via spontaneous asymmetrical crystallization

Synthesis and Characterization of New Tetraaza Macrocycles Bearing Two or Four N-Methoxyethyl Pendant Arms and Their Copper(II) and/or Nickel(II) Complexes

Template Synthesis of Copper(II) Complexes of N3O-Donor Macrotricycles Containing N-CH2-N and N-CH2-O Linkages

Contact Info

Product

Resources

About

Template Synthesis of Copper(II) Complexes of N₃O-Donor Macrotricycles Containing N-CH₂-N and N-CH₂-O Linkages