TY - JOUR

T1 - Effect of solution acidity on the structure of amino acid-bearing uranyl compounds

AU - Nazarchuk, Evgeny V.

AU - Ikhalaynen, Yuri A.

AU - Charkin, Dmitri O.

AU - Siidra, Oleg I.

AU - Petrov, Vladimir G.

AU - Kalmykov, Stepan N.

AU - Borisov, Artem S.

PY - 2019/3/26

Y1 - 2019/3/26

N2 - A series of uranyl sulfates and selenates templated by protonated forms of amino acids (glycine, α- and β-alanine, threonine, nicotinic, and isonicotinic acid) has been prepared via isothermal evaporation of strongly acidic solutions. Their structures have been refined by the direct methods and can be classified as inorganic [(UO 2 ) m (TO 4 ) n (H 2 O) k ] (T=S 6+ , Se 6+ ) moieties combined with the protonated amino acid cations, water molecules and hydronium ions. Their overall motifs demonstrate common features with related structures templated by organic amines. The role of carboxylic acid groups depends on the nature of the corresponding amino acid. They can either link two protonated organic moieties into dimers, or contribute to hydrogen bonding between organic and inorganic parts of the structure. The ammonium ends of the amino acid cations form strong directional bonds to the oxygens of the uranyl and TO 4 anions.

AB - A series of uranyl sulfates and selenates templated by protonated forms of amino acids (glycine, α- and β-alanine, threonine, nicotinic, and isonicotinic acid) has been prepared via isothermal evaporation of strongly acidic solutions. Their structures have been refined by the direct methods and can be classified as inorganic [(UO 2 ) m (TO 4 ) n (H 2 O) k ] (T=S 6+ , Se 6+ ) moieties combined with the protonated amino acid cations, water molecules and hydronium ions. Their overall motifs demonstrate common features with related structures templated by organic amines. The role of carboxylic acid groups depends on the nature of the corresponding amino acid. They can either link two protonated organic moieties into dimers, or contribute to hydrogen bonding between organic and inorganic parts of the structure. The ammonium ends of the amino acid cations form strong directional bonds to the oxygens of the uranyl and TO 4 anions.

KW - Amino acids

KW - crystal structures

KW - templated uranyl compounds

KW - X-ray diffraction

UR - http://www.scopus.com/inward/record.url?scp=85060014971&partnerID=8YFLogxK

U2 - 10.1515/ract-2018-3050

DO - 10.1515/ract-2018-3050

M3 - Article

AN - SCOPUS:85060014971

VL - 107

SP - 311

EP - 325

JO - Radiochimica Acta

JF - Radiochimica Acta

SN - 0033-8230

IS - 4

ER -