Anion Intercalation and Anion Exchange in Bismuth Compounds

2002 ◽  
Vol 755 ◽  
Author(s):  
Masamichi Tsuji ◽  
Makoto Yamaguchi ◽  
Satoshi Murao
Keyword(s):  
Crystal Structure ◽  
Anion Exchange ◽  
Bismuth Nitrate ◽  
New Host ◽  
Xrd Pattern ◽  
Orthorhombic System ◽  
Full Extent ◽  
Bismuth Compounds ◽  
Chemical Content ◽  
Exchange Properties

ABSTRACTBismuth nitrate basic, which chemical content is given by 4BiNO3(OH)2.BiO(OH), was studied for anion-intercalation or anion-exchange properties. A crystal structure of the bismuth nitrate basic has not been known. In the present study, its XRD pattern was indexed using a possible orthorhombic system having the lattice parameters of ao=3.021(1) nm, bo=3.029(1) nm and co=0.9572(3) nm. This compound was found to incorporate CH3COO-, halides and several oxyanions including CO32-. Incorporation of these anions by this solid was evidenced by broadening of infrared absorption band by NO3-, suggesting involvement with NO3- ions. Intercalation of CO32- by the bismuth nitrate basic in full extent yielded a bismutite represented by the chemical composition Bi2O2CO3. The bismuth nitrate basic will serve as a new host for anion-intercalation and anion-exchange.

Structural diversities in Cu(i) and Ag(i) sulfonate coordination polymers and their anion exchange properties

CrystEngComm ◽  
2015 ◽  
Vol 17 (38) ◽  
pp. 7363-7371 ◽  
Author(s):  
Suryabhan Singh ◽  
Rajendran Karthik
Keyword(s):  
Anion Exchange ◽  
Coordination Polymers ◽  
Exchange Properties

Cu(i)/Ag(i) sulfonate CPs have been synthesized and characterized. One of the CPs exhibits a reversible anion exchange for perchlorate and permanganate.

1,1′-Bis(diphenylphosphino)cobaltocenium tetrafluoridoborate

2007 ◽  
Vol 63 (11) ◽  
pp. m2730-m2730 ◽  
Author(s):  
Jian-Guo Hou ◽  
Pu Zhang ◽  
Chen Ye ◽  
Tie-Gang Yu
Keyword(s):  
Crystal Structure ◽  
Anion Exchange ◽  
Title Compound ◽  
Sodium Tetrafluoroborate

The title compound, [Co(C17H14P)2]BF4, was obtained by the anion exchange of 1,1′-bis(diphenylphosphino)cobaltocenium chloride with sodium tetrafluoroborate. Both the cation and anion lie on crystallographic twofold axes which run through the CoIII ion, and both the B atom and one F atom of the anion, respectively. Three of the F atoms of the BF4 − anion are disordered equally over two sites. The two diphenylphosphine ligands are trans to each other with respect to the CoIII ion. The crystal structure contains weak C—H...F interactions.

scholarly journals Inorganic Nanostructured Anion-Exchange Materials Based on Aluminum Hydroxide

2020 ◽  
Vol 4 (3) ◽  
Keyword(s):  
Anion Exchange ◽  
Aluminum Hydroxide ◽  
Solid Phase ◽  
Structural Motif ◽  
Dynamic Mode ◽  
Isomorphic Substitution ◽  
Ion Exchangers ◽  
Oh Groups ◽  
Wide Range ◽  
Exchange Properties

Inorganic sorbents, in comparison with ordinary organic ion exchangers, have higher selectivity, radiation, thermal, and chemical stability. Inorganic ion exchangers are universal materials exhibiting both cation exchange and anion exchange properties. In this work, using aluminum hydroxide (AHO) as an example, we study the possibility of expanding the range of metal oxyhydrates that can serve as the basis to produce inorganic anion-exchange materials. The properties of aluminum hydroxide largely depend on the method of its production. This phenomenon is associated with a different state of Al3+ ions in aqueous solutions during hydrolysis. Estimation of the size of the primary particles of hydrated alumina gives a value of 19 nm. The most potent effect on the structure and ion-exchange properties of aluminum hydroxide is exerted by the introduction of alloying elements into its composition. Isomorphic substitution of a part of Al(III) ions in the structure of aluminum hydroxide with ions with a higher charge (Ti(IV), Zr(IV), or W(VI)) leads to an increase in the content of exchangeable OH-groups in the resulting material. The synthesized materials are amorphous substances, to study their structure; the method of diffuse X-ray scattering was used. The Gibbsite structural motif is determined, and structural changes occurring under the influence of various factors, and synthesis conditions are analyzed. By optimizing the composition of the material, it is possible to improve its sorption characteristics significantly. AAW-0, AAZ-0, and AAT-0 anion exchangers synthesized based on hydrated aluminum oxide can be used to purify weakly acidic electrolyte solutions from anionic impurities in the dynamic mode of repeated sorptiondesorption cycles. Materials based on mixed hydrated oxides of various elements can also be used as catalyst supports. Their anion exchange properties allow a wide range to vary the number of different anions introduced into the solid phase and, accordingly, to regulate the number and state of active catalytic sites.

Crystal Structure of 3-(5-Acetyl-2-Aminothiazol-4-Ylthio)- 4-Hydroxypentan-2-one

2012 ◽  
Vol 554-556 ◽  
pp. 56-59
Author(s):  
Noor Azilah M. Kasim ◽  
Eliyanti A. Othman ◽  
Ummi Habibah Abdullah ◽  
Bohari M. Yamin
Keyword(s):  
Crystal Structure ◽  
Compound I ◽  
Orthorhombic System ◽  
Space Group

Reaction 3-thiocyanatoacetylacetone with leucine (C6H13O2N1) was found to give 3-(5-acetyl-2-aminothiazol-4-ylthio)-4-hydroxypentan-2-one (I). Compound I crystallized in the orthorhombic system with space group Pbca a= 8.143 Å, b=13.831Å, c=21.878Å. V= 2463.7Å3, Z=8.

Zinc(ii) and cadmium(ii) metal–organic frameworks with 4-imidazole containing tripodal ligand: sorption and anion exchange properties

2014 ◽  
Vol 43 (16) ◽  
pp. 6012 ◽  
Author(s):  
Shui-Sheng Chen ◽  
Peng Wang ◽  
Satoshi Takamizawa ◽  
Taka-aki Okamura ◽  
Min Chen ◽  
...  
Keyword(s):  
Anion Exchange ◽  
Metal Organic Frameworks ◽  
Tripodal Ligand ◽  
Metal Organic ◽  
Exchange Properties

Anion-Exchange Properties of Trifluoroacetate and Triflate Salts of N -Alkylammonium Resorcinarenes

2016 ◽  
Vol 11 (5) ◽  
pp. 782-788 ◽  
Author(s):  
Fangfang Pan ◽  
Ngong Kodiah Beyeh ◽  
Stefania Bertella ◽  
Kari Rissanen
Keyword(s):  
Anion Exchange ◽  
Exchange Properties

The Full Extent

2003 ◽  
Author(s):  
J. S. Weiner ◽  
Chris Stringer
Keyword(s):  
Crystal Structure ◽  
Organic Matter ◽  
Detectable Change ◽  
Full Extent ◽  
Great Range ◽  
Ferric Ammonium ◽  
Iron Sulphate ◽  
Iron Alum ◽  
Chromium Compounds ◽  
Iron Impregnation

Almost any single one of the techniques employed in the investigations suffices to reveal the elaborateness of the deception which was perpetrated at Piltdown. The anatomical examination, the tests for fluorine and nitrogen bear particularly good witness to this; even the radio-activity results taken alone, led the physicists to remark on the ‘great range of activity shown by specimens from this one little site’; ‘it is difficult to avoid the conclusion that the different bones in the Piltdown assemblage have had very different geological and chemical histories’. We have merely to take account of the stained condition of the whole assemblage, to realize the thoroughness of the fraud. From the Vandyke brown colour of the unnaturally abraded canine we infer with certainty that it was deliberately ‘planted’. The superficiality of the iron impregnation, combined with the chromium, tells as much as regards the orang jaw. And it is this iron-staining which finally shows that the rest, human and animal, was without doubt, all ‘planted’. The iron-staining has two peculiar features. It seems probable that ferric ammonium sulphate (iron alum) was the salt employed. This salt is slightly acid. The peculiarity of this salt (and, indeed, of any acid sulphate) is that in bone which contains little organic matter such as the cranium of Piltdown I, or Piltdown II, the beaver bones and hippo teeth, it brings about a detectable change in the crystal structure of the bone. In the apatite in which the calcium of the bone is held, the phosphate is replaced by sulphate to form gypsum. This change is quite unnatural, for neither gypsum nor sufficient sulphate occur in the gravels at Piltdown to bring it about. So the iron-sulphate-staining is an integral part of the forger’s necessary technique. He also used chromium compounds to aid the iron-staining probably because he thought it would assist the production of iron oxide. Chromium compounds are oxidizing. The basic strategy underlying the Piltdown series of forgeries now seems reasonably clear. Two main elements in the plan taken together explain nearly all the features of the affair quite satisfactorily.

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