Metallacrowns: A New Class of Molecular Recognition Agents

Pecoraro, Vincent L.; Stemmler, Ann J.; Gibney, Brian R.; Bodwin, Jeffrey J.; Wang, Hsin; Kampf, Jeff W.; Barwinski, Almut

doi:10.1002/9780470166468.ch2

Cited by 188 publications

(150 citation statements)

References 71 publications

Supporting

Mentioning

147

Contrasting

Unclassified

Order By: Relevance

“…[38][39] In the present work, we sought to gain a deeper insight into the effect of the presence of the terminal amino group beside the hydroxamate function on the [(η 6 -p-cym) Ru …”

Section: Accepted M Manuscriptmentioning

confidence: 99%

[(η6-p-cymene)Ru(H2O)3]2+ binding capability of aminohydroxamates — A solution and solid state study

Parajdi-Losonczi

Bényei

Kováts

et al. 2016

Journal of Inorganic Biochemistry

View full text Add to dashboard Cite

show abstract

“…[38][39] In the present work, we sought to gain a deeper insight into the effect of the presence of the terminal amino group beside the hydroxamate function on the [(η 6 -p-cym) Ru …”

Section: Accepted M Manuscriptmentioning

confidence: 99%

[(η6-p-cymene)Ru(H2O)3]2+ binding capability of aminohydroxamates — A solution and solid state study

Parajdi-Losonczi

Bényei

Kováts

et al. 2016

Journal of Inorganic Biochemistry

View full text Add to dashboard Cite

show abstract

“…Since they were first reported by Pecoraro and co-workers in 1989 [3,4], several different types of metallacrown complexes contaning various metals, ligands and ring sizes have been developed [5]. The stoichiometry and the structure of the metallacrown complexes depends on the type of the metal and the ligand used for synthesis.…”

Section: Introductionmentioning

confidence: 99%

Copper(II) 15-metallacrown-5 lanthanide(III) complexes derived from l-serine and l-threonine hydroxamic acids

Pacco

Absillis

Binnemans

et al. 2008

Journal of Alloys and Compounds

View full text Add to dashboard Cite

Formation of pentanuclear copper(II) complexes with serine hydroxamic acid (Serha) and threonine hydroxamic acid (Thrha) was studied in solution by electrospray ionization mass spectrometry (ESI-MS), absorption spectrophotometry and proton NMR spectroscopy. The presence of lanthanide(III) ions is essential for the self-assembly of the 15-metallacrown-5 compounds. The positive mode ESI-MS spectra of the solutions containing Serha or Thrha, copper(II), and lanthanide(III) ions (Ln = La, Nd, Gd,) in the ratio 5:5:1 showed only the peaks that could be unambiguously assigned to the following intact molecular ions: {La(NO 3 ) − } + and {La(NO 3 ) 2 [15-MC-5]} 2+ . The NMR spectra of the pentanuclear species revealed only one set of peaks indicating a five-fold symmetry of the complex. The UV-vis experiments revealed that upon addition of 0.2 equivalents of lanthanide(III) to the equimolar solutions containing Serha and copper(II), the self-assembly of the metallacrown structure was accomplished within 30 min.

show abstract

“…While most of these structures form butterfly or pseudocubane assemblies that do not match the precise stoichiometry or include calcium, they do provide deeper insight into the system. An alternative formulation has been reported from our group using a class of molecules known as metallacrowns (Gibney et al 1996;Pecoraro et al 1997). The 12-MC-4 structure type shown in figure 2 contains four Mn III ions in a ring.…”

Section: Structurementioning

confidence: 99%

Using small molecule complexes to elucidate features of photosynthetic water oxidation

Meelich

Zaleski

Pecoraro

2007

Phil. Trans. R. Soc. B

View full text Add to dashboard Cite

The molecular oxygen produced in photosynthesis is generated via water oxidation at a manganesecalcium cluster called the oxygen-evolving complex (OEC). While studies in biophysics, biochemistry, and structural and molecular biology are well known to provide deeper insight into the structure and workings of this system, it is often less appreciated that biomimetic modelling provides the foundation for interpreting photosynthetic reactions. The synthesis and characterization of small model complexes, which either mimic structural features of the OEC or are capable of providing insight into the mechanism of O 2 evolution, have become a vital contributor to this scientific field. Our group has contributed to these findings in recent years through synthesis of model complexes, spectroscopic characterization of these systems and probing the reactivity in the context of water oxidation. In this article we describe how models have made significant contributions ranging from understanding the structure of the water-oxidation centre (e.g. contributions to defining a tetrameric Mn 3 Ca-cluster with a dangler Mn) to the ability to discriminate between different mechanistic proposals (e.g. showing that the Babcock scheme for water oxidation is unlikely).

show abstract

Metallacrowns: A New Class of Molecular Recognition Agents

Cited by 188 publications

References 71 publications

[(η6-p-cymene)Ru(H2O)3]2+ binding capability of aminohydroxamates — A solution and solid state study

[(η6-p-cymene)Ru(H2O)3]2+ binding capability of aminohydroxamates — A solution and solid state study

Copper(II) 15-metallacrown-5 lanthanide(III) complexes derived from l-serine and l-threonine hydroxamic acids

Using small molecule complexes to elucidate features of photosynthetic water oxidation

Contact Info

Product

Resources

About