The formation of Gd4O4 cubane cluster controlled by L-valine

Ma, Bao‐Qing; Zhang, Dashun; Gao, Song; Jin, Tong; Yan, Chun‐Hua

doi:10.1039/a910181k

Cited by 40 publications

(18 citation statements)

References 15 publications

(4 reference statements)

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“…The validity of this ligand-controlled hydrolytic approach was tested in a series of proof-of-concept syntheses, using a variety of a-amino acids, including glycine, alanine, valine, phenylalanine, tyrosine, proline, glutamic acid and aspartic acid as the supporting ligands. [29][30][31][32][33][34] The zwitterionic structures of these amino acids are shown in Fig. 3.…”

Section: The Story Of A-amino Acids -Self-assembly Of Complexes Featu...mentioning

confidence: 99%

Ligand-controlled self-assembly of polynuclear lanthanide–oxo/hydroxo complexes: from synthetic serendipity to rational supramolecular design

2001

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Lanthanide ions and complexes occupy a special position in developing synthetic nucleases capable of catalyzing the hydrolytic cleavage of RNA or DNA. Stimulated by a number of serendipitous lanthanide complexes that feature the common active-site structure of dinuclear metallo-phosphodiesterases, rational design and synthesis of polynuclear lanthanidehydroxo species via ligand-controlled hydrolysis of the lanthanide ions were attempted. The efforts yielded a series of highly sophisticated yet structurally well-defined lanthanide-hydroxo complexes. These materials are potentially applicable to the study of biomimetic catalysis of phosphate diester cleavage. Research highlights are described in this Feature Article.

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Section: The Story Of A-amino Acids -Self-assembly Of Complexes Featu...mentioning

confidence: 99%

Ligand-controlled self-assembly of polynuclear lanthanide–oxo/hydroxo complexes: from synthetic serendipity to rational supramolecular design

2001

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“…About half a dozen Gd 4 tetrahedra have been synthesized to date, none of them was magnetically characterized [20,21,22,23,24,25]. In the following we therefore discuss the magnetic properties of a fictitious Gd 4 tetrahedron with an exchange interaction of J GdGd = −0.1 cm −1 and g = 2.0.…”

Section: A Fictitious Gd 4 Tetrahedronmentioning

confidence: 99%

Application of the finite-temperature Lanczos method for the evaluation of magnetocaloric properties of large magnetic molecules

Schnack

Heesing

2013

Eur. Phys. J. B

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Abstract. We discuss the magnetocaloric properties of gadolinium containing magnetic molecules which potentially could be used for sub-Kelvin cooling. We show that a degeneracy of a singlet ground state could be advantageous in order to support adiabatic processes to low temperatures and simultaneously minimize disturbing dipolar interactions. Since the Hilbert spaces of such spin systems assume very large dimensions we evaluate the necessary thermodynamic observables by means of the Finite-Temperature Lanczos Method.

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“…[38][39][40][41] Minor discrepancies exist among these complexes, however. Although in most of these complexes, the amino acid ligands are zwitterionic with the amino group remaining protonated, there are examples such as [Gd 4 (μ 3 -OH) 4 10 ] 8+ .…”

Section: Lanthanide-amino Acid Complexes Obtained Under Hydrolytic Comentioning

confidence: 99%

Lanthanides: Amino Acid Compounds

Zheng

2012

Encyclopedia of Inorganic and Bioinorganic Chemistry

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The synthetic and structural chemistry of lanthanide complexes with α‐amino acids under low‐ and high‐pH conditions is summarized. The preparative methods, diverse coordination modes, fascinating solid‐state structures, and solution behavior of such complexes are discussed. Under acidic conditions, only the carboxylate group of the amino acid participates in the metal coordination. For those with a side‐chain carboxylate group, more extensive bridging interactions of the ligand and the lanthanide ions are identified. Under physiological or even higher‐pH conditions, both the amino and carboxylate groups, be they skeletal or present in the side chain, could be coordinating, leading to much more diverse coordination modes of these unique ligands in their lanthanide complexes. Distinct from their low‐pH counterparts, complexes obtained under higher‐pH conditions are products of lanthanide hydrolysis, limited by the supporting amino acid ligands. Presence of structurally well‐defined polynuclear lanthanide–oxo/hydroxo cluster motif is characteristic of these interesting compounds that provide fundamental insight into the lanthanide interactions with biological environment.

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The formation of Gd4O4 cubane cluster controlled by L-valine

Cited by 40 publications

References 15 publications

Ligand-controlled self-assembly of polynuclear lanthanide–oxo/hydroxo complexes: from synthetic serendipity to rational supramolecular design

Ligand-controlled self-assembly of polynuclear lanthanide–oxo/hydroxo complexes: from synthetic serendipity to rational supramolecular design

Application of the finite-temperature Lanczos method for the evaluation of magnetocaloric properties of large magnetic molecules

Lanthanides: Amino Acid Compounds

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