Uranyl peroxide clusters stabilized by dicarboxylate ligands : a pentagonal ring and a dimer with extensive uranyl-cation interactions

Yingjie Zhang; Mohan Bhadbhade; Jason R. Price; Inna Karatchevtseva; Linggen Kong; Nicholas Scales; Gregory R. Lumpkin; Feng Li

doi:10.1016/j.poly.2015.03.023

Uranyl peroxide clusters stabilized by dicarboxylate ligands : a pentagonal ring and a dimer with extensive uranyl-cation interactions

Yingjie Zhang, Mohan Bhadbhade, Jason R. Price, Inna Karatchevtseva, Linggen Kong, Nicholas Scales, Gregory R. Lumpkin, Feng Li

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

Great effort has been made to synthesize larger uranyl peroxide clusters whilst the understanding of the basic construction units for these clusters still needs to be further explored. Two small uranyl peroxide clusters stabilized by simple dicarboxylate ligands have been synthesized and characterized. Na10[(UO2) (O2)(C3H2O4)]5_20H2O (1) has a pentagonal ring stabilized by malonate and [Na4K2(UO2)2(O2)(C2O4)4] .6H2O (2) has a dimer stabilized by oxalate. Cation-cation interactions between uranyl and alkali metal ions exist in both 1 and 2, leading to the observation of elongated U=O-yl bonds. Vibrational modes of uranyl ion, peroxide and malonate/oxalate ligands have been confirmed by Raman spectroscopy. The presence of malonate ligands prevents the pentagonal uranyl peroxide rings further assembling into larger clusters whilst the excess oxalate ligands inhibit the dimers further linking to nearby uranyl centers.

Original language	English
Pages (from-to)	99-104
Number of pages	6
Journal	Polyhedron
Volume	92
DOIs	https://doi.org/10.1016/j.poly.2015.03.023
Publication status	Published - 2015

Keywords

ligands (biochemistry)
oxalates
peroxides

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@article{93a35ef12d814e939b1bf15cf9838fa1,

title = "Uranyl peroxide clusters stabilized by dicarboxylate ligands : a pentagonal ring and a dimer with extensive uranyl-cation interactions",

abstract = "Great effort has been made to synthesize larger uranyl peroxide clusters whilst the understanding of the basic construction units for these clusters still needs to be further explored. Two small uranyl peroxide clusters stabilized by simple dicarboxylate ligands have been synthesized and characterized. Na10[(UO2) (O2)(C3H2O4)]5_20H2O (1) has a pentagonal ring stabilized by malonate and [Na4K2(UO2)2(O2)(C2O4)4] .6H2O (2) has a dimer stabilized by oxalate. Cation-cation interactions between uranyl and alkali metal ions exist in both 1 and 2, leading to the observation of elongated U=O-yl bonds. Vibrational modes of uranyl ion, peroxide and malonate/oxalate ligands have been confirmed by Raman spectroscopy. The presence of malonate ligands prevents the pentagonal uranyl peroxide rings further assembling into larger clusters whilst the excess oxalate ligands inhibit the dimers further linking to nearby uranyl centers.",

keywords = "ligands (biochemistry), oxalates, peroxides",

author = "Yingjie Zhang and Mohan Bhadbhade and Price, {Jason R.} and Inna Karatchevtseva and Linggen Kong and Nicholas Scales and Lumpkin, {Gregory R.} and Feng Li",

year = "2015",

doi = "10.1016/j.poly.2015.03.023",

language = "English",

volume = "92",

pages = "99--104",

journal = "Polyhedron",

issn = "0277-5387",

publisher = "Elsevier",

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TY - JOUR

T1 - Uranyl peroxide clusters stabilized by dicarboxylate ligands : a pentagonal ring and a dimer with extensive uranyl-cation interactions

AU - Zhang, Yingjie

AU - Bhadbhade, Mohan

AU - Price, Jason R.

AU - Karatchevtseva, Inna

AU - Kong, Linggen

AU - Scales, Nicholas

AU - Lumpkin, Gregory R.

AU - Li, Feng

PY - 2015

Y1 - 2015

N2 - Great effort has been made to synthesize larger uranyl peroxide clusters whilst the understanding of the basic construction units for these clusters still needs to be further explored. Two small uranyl peroxide clusters stabilized by simple dicarboxylate ligands have been synthesized and characterized. Na10[(UO2) (O2)(C3H2O4)]5_20H2O (1) has a pentagonal ring stabilized by malonate and [Na4K2(UO2)2(O2)(C2O4)4] .6H2O (2) has a dimer stabilized by oxalate. Cation-cation interactions between uranyl and alkali metal ions exist in both 1 and 2, leading to the observation of elongated U=O-yl bonds. Vibrational modes of uranyl ion, peroxide and malonate/oxalate ligands have been confirmed by Raman spectroscopy. The presence of malonate ligands prevents the pentagonal uranyl peroxide rings further assembling into larger clusters whilst the excess oxalate ligands inhibit the dimers further linking to nearby uranyl centers.

AB - Great effort has been made to synthesize larger uranyl peroxide clusters whilst the understanding of the basic construction units for these clusters still needs to be further explored. Two small uranyl peroxide clusters stabilized by simple dicarboxylate ligands have been synthesized and characterized. Na10[(UO2) (O2)(C3H2O4)]5_20H2O (1) has a pentagonal ring stabilized by malonate and [Na4K2(UO2)2(O2)(C2O4)4] .6H2O (2) has a dimer stabilized by oxalate. Cation-cation interactions between uranyl and alkali metal ions exist in both 1 and 2, leading to the observation of elongated U=O-yl bonds. Vibrational modes of uranyl ion, peroxide and malonate/oxalate ligands have been confirmed by Raman spectroscopy. The presence of malonate ligands prevents the pentagonal uranyl peroxide rings further assembling into larger clusters whilst the excess oxalate ligands inhibit the dimers further linking to nearby uranyl centers.

KW - ligands (biochemistry)

KW - oxalates

KW - peroxides

UR - http://handle.uws.edu.au:8081/1959.7/uws:29508

U2 - 10.1016/j.poly.2015.03.023

DO - 10.1016/j.poly.2015.03.023

M3 - Article

SN - 0277-5387

VL - 92

SP - 99

EP - 104

JO - Polyhedron

JF - Polyhedron

ER -

Uranyl peroxide clusters stabilized by dicarboxylate ligands : a pentagonal ring and a dimer with extensive uranyl-cation interactions

Abstract

Keywords

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