Chirality and magnetism of an open-framework cobalt phosphite containing helical channels from achiral materials

Liu, Xianchun; Xing, Yan; Wang, Xinlong; Xu, Hongbin; Liu, Xizheng; Shao, Kui‐Zhan; Su, Zhong‐Min

doi:10.1039/b923028a

Cited by 54 publications

(12 citation statements)

References 43 publications

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“…Recently, two optical active inorganic microporous compounds (C 4 8 were synthesized in the presence of achiral raw materials with an organic template. Besides, the spontaneous resolution of enantiomers were also observed in some inorganic-organic hybrid materials.…”

Section: Dalton Transactions Communicationmentioning

confidence: 99%

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

Yang

et al. 2013

Dalton Trans.

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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

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Section: Dalton Transactions Communicationmentioning

confidence: 99%

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

Yang

et al. 2013

Dalton Trans.

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“…9 Inspired by this work, various phosphates containing different cations or cation combinations like nickel, cobalt, ammonium and sodium, have been synthesized by hydrothermal method. [10][11][12][13][14][15] Most metal phosphates have a layered structure. This unique structure characteristic is desired for applications such as energy storage devices which require fast transport of ions.…”

Section: Introductionmentioning

confidence: 99%

High capacitive amorphous barium nickel phosphate nanofibers for electrochemical energy storage

et al. 2016

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Ultrafine amorphous Ba x Ni 3Àx (PO 4 ) 2 (0 < x < 3) nanofibers are synthesized for the first time through a facile cation exchange reaction method at room temperature. Both the phase transformation and growing process of the nanofibers are systematically investigated. A dramatic morphology transformation from Ba 3 (PO 4 ) 2 flakes to Ba x Ni 3Àx (PO 4 ) 2 nanofibers with the addition of Ni 2+ ions is observed. The as-prepared nanofiber material shows a diameter less than 10 nanometers and length of several micrometers. The material possesses a BET surface area of 64.8 m 2 g À1 . When it is used as a supercapacitor electrode material, specific capacitances as high as 1058 F g À1 at 0.5 A g À1 and 713 F g À1 at 5 A g À1 are achieved, indicating the promising energy storage property of this material.

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“…The crystals of 3 were separated from the resulting product by sonication, washed with distilled water and dried in air (25.6 wt% yield based on zinc). C 7 …”

Section: H 2 Dmpda·zn 3 (Hpo 3 ) 4 (3)mentioning

confidence: 98%

Solvent-free synthesis of new metal phosphites with double-layered, pillared-layered, and framework structures

Liu

Zhang

Shi

et al. 2014

Solid State Sciences

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Chirality and magnetism of an open-framework cobalt phosphite containing helical channels from achiral materials

Cited by 54 publications

References 43 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

High capacitive amorphous barium nickel phosphate nanofibers for electrochemical energy storage

Solvent-free synthesis of new metal phosphites with double-layered, pillared-layered, and framework structures

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