Sm(III) complexation with small peptides.: Crystal structure of [SM2(Gly-Val)4(H2O)8](ClO4)6•2H2O

被引：8
作者：
Torres, J
Kremer, C [1 ]
Kremer, E
Pardo, H
Russi, S
Mombrú, A
Domínguez, S
Mederos, A
机构：
[1] Catedra Quim Inorgan, Fac Quim, Montevideo CC1157, Uruguay
[2] Lab Cristallog, Fac Quim, Montevideo CC1157, Uruguay
[3] Univ La Laguna, Dept Quim Inorgan, Tenerife, Canary Isl, Spain
来源：
INORGANICA CHIMICA ACTA | 2003年 / 355卷
关键词：
samarium; peptides; glycylvaline; potentiometry; crystal structures;
D O I：
10.1016/S0020-1693(03)00373-6
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
in this work, samarium(III) complexes with small peptides have been studied by potentiometric measurements. Experiments were performed in aqueous solution at 37.0degreesC and 0.15 M NaClO4, resembling physiological medium. Low stability Sm(III)-peptide complexes were detected. Complexes with 1:1 ligand to metal molar ratio are predominant in the studied conditions. For Gly-Gly, the smallest dipeptide, [Sm(HL)(2)](3+) was also detected. For pH values greater than 6, hydrolysis to [Sm(OH)](2+) and Sm(OH)(3) becomes the main process. One of these complexes was isolated and characterized in the solid state. X-ray structure of [Sm-2(GlyVal)(4)(H2O)(8)](ClO4)(6)(.)2H(2)O is here reported. In this dimeric complex, two samarium. atoms, with coordination number nine, are connected via four bridging carboxylate groups. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码：442 / 448
页数：7
相关论文
共 50 条
  • [1] Sm(III) complexation with α-amino acids X-ray crystal structure of [Sm2(Hala)4(H2O)8](ClO4)4(Cl)2
    Torres, J
    Kremer, C
    Kremer, E
    Pardo, H
    Suescun, L
    Mombru, A
    Domínguez, S
    Mederos, A
    JOURNAL OF ALLOYS AND COMPOUNDS, 2001, 323 : 119 - 124
  • [2] Amino acid-lanthanide interactions .2. The X-ray crystal structures of lanthanide and calcium complexes of 1-amino cyclohexane-1-carboxylic acid (Acc(6)), [Nd-2(Acc(6))(6)(H2O)(6)](ClO4)(6)center dot(H2O)(6)(1),[Er-2(Acc(6))(4)(H2O)(8)](ClO4)(6)center dot(H2O)(11)(2) and [Ca-5(Acc(6))(12)(H2O)(6)](ClO4)(10)center dot(H2O)(4)(3)
    Aparna, K
    Krishnamurthy, SS
    Nethaji, M
    Balaram, P
    POLYHEDRON, 1997, 16 (03) : 507 - 514
  • [3] Ln2(ClO4)2(H2I2O10)•8 H2O (Ln = Sm, Gd), a lanthanide perchlorate mesodiperiodate forming a novel layer structure
    Fischer, A
    ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 2003, 629 (04): : 634 - 636
  • [4] Synthesis and Crystal Structure of a 2D Sm(III) Coordination Polymer: {[Sm2L3(H2O)4]•(4,4′-bpy)•3H2O}n
    Guo Jing
    Yang Ming-Xing
    Chen Li-Juan
    Huang Qiu-Feng
    Lin Shen
    CHINESE JOURNAL OF STRUCTURAL CHEMISTRY, 2015, 34 (10) : 1585 - 1592
  • [5] Metal ion interactions with nucleic acid bases in the tripodal tris(2-aminoethyl)amine (tren) ligand-system:: Crystal structures of [Ni(tren)(adeninato)(ClO4)] • adenine, [Cu(tren)(9-ethylguanine)] • (ClO4)2, [{Ni(tren)(H2O)}2(hypoxanthinato)] • (ClO4)3 • 1.5H2O, [Ni(tren)(hypoxanthinato)(H2O)] • ClO4 • 2H2O, and [{Ni(tren)(H2O)}2(hypoxanthinato)]2 • (NO3)6 • 4.5H2O
    Aoki, Katsuyuki
    Salam, Md. Abdus
    Munakata, Chie
    Fujisawa, Ikuhide
    INORGANICA CHIMICA ACTA, 2007, 360 (12) : 3658 - 3670
  • [6] Synthesis and Crystal Structure of a 2D Sm(Ⅲ) Coordination Polymer: {[Sm2L3(H2O)4]·(4,4?-bpy)·3H2O}n
    郭静
    杨明星
    陈丽娟
    黄秋锋
    林深
    结构化学, 2015, 34 (10) : 1585 - 1592
  • [7] Samarium Coordinated Polymer: Structural, Vibrational and Thermal Studies of [Sm2(C3H2O4)3(H2O)6]n
    Doreswamy, B. H.
    Mahendra, M.
    Prasad, J. Shashidhara
    Varughese, P. A.
    Varghese, George
    JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS, 2011, 21 (02) : 376 - 383
  • [8] Samarium Coordinated Polymer: Structural, Vibrational and Thermal Studies of [Sm2(C3H2O4)3(H2O)6]n
    B. H. Doreswamy
    M. Mahendra
    J. Shashidhara Prasad
    P. A. Varughese
    George Varghese
    Journal of Inorganic and Organometallic Polymers and Materials, 2011, 21 : 376 - 383
  • [9] Metal ion interactions with nucleobases in the tripodal tris(2-aminoethyl)amine (tren) ligand-system. Crystal structures of [Zn(tren)(adeninato)] • ClO4, [Cd(tren)(adeninato)] • ClO4, [Ni(tren)(adeninato)(ClO4)], [Zn(tren)(hypoxanthinato)] • ClO4 • H2O, [{Cd(tren)}2(hypoxanthinato)] • (ClO4)3 • 0.5H2O, [Ni(tren)(uracilato)(H2O)] • ClO4 • (0.5H2O)2, and [Cu(tren)(uracilato)] • ClO4 • 0.5H2O
    Salam, Md. Abdus
    Yuan, Hou Qun
    Kikuchi, Takanori
    Prasad, Nilesh Anand
    Fujisawa, Ikuhide
    Aoki, Katsuyuki
    INORGANICA CHIMICA ACTA, 2009, 362 (04) : 1158 - 1168
  • [10] Two Temperature-Independent Spinomers of the Dinuclear Mn(III) Compound [{Mn(H2O)(phen)}2(μ-2-ClC6H4COO)2(μ-O)](ClO4)2
    Gomez, Veronica
    Corbella, Montserrat
    Aullon, Gabriel
    INORGANIC CHEMISTRY, 2010, 49 (04) : 1471 - 1480
12345