Synthesis And Structures Of Pb3O2(CH3COO)2 0.5H2O and Pb2O(HCOO)2: Two Corrosion Products Revisited

Title:
Synthesis And Structures Of Pb3O2(CH3COO)2 0.5H2O and Pb2O(HCOO)2: Two Corrosion Products Revisited
Authors:
Mauck, Catherine M.; van den Heuvel, Titus; Hull, Michaela M.; Zeller, Matthias; Oertel, Catherine M.
Abstract:
Reactions of carboxylic acids with lead play an important role in the atmospheric corrosion of lead and lead-tin alloys. This is of particular concern for the preservation of lead-based cultural objects, including historic lead-tin alloy organ pipes. Two initial corrosion products, Pb3O2(CH3COO)(2)center dot 0.5H(2)O (1) and Pb2O(HCOO)(2) (2), had been identified through powder diffraction fingerprints in the Powder Diffraction File, but their structures had never been determined. We have crystallized both compounds using hydrothermal solution conditions, and structures were determined using laboratory and synchrotron single-crystal X-ray diffraction data. Compound 1 crystallizes in P (1) over bar, and 2 in Cccm. These compounds may be viewed as inorganic-organic networks containing single and double chains of edge-sharing Pb4O tetrahedra and have structural similarities to inorganic basic lead compounds. Bond valence sum analysis has been applied to the hemidirected lead coordination environments in each compound. Atmospheric exposure experiments contribute to understanding of the potential for conversion of these short-term corrosion products to hydrocerussite, Pb-3(CO3)(2)(OH)(2), previously identified as a long-term corrosion product on lead-rich objects. Each compound was also characterized by elemental analysis, thermogravimetric analysis and differential scanning calorimetry (TGA-DSC), and Raman spectroscopy.
Citation:
Mauck, Catherine M., Titus W. P. van den Heuvel, Michaela M. Hull, Matthias Zeller, et al. 2010. "Synthesis And Structures Of Pb3O2(CH3COO)2 0.5H2O and Pb2O(HCOO)2: Two Corrosion Products Revisited." Inorganic Chemistry 49(22): 10736-10743.
Publisher:
American Chemical Society
DATE ISSUED:
2010-11
Department:
Chemistry
Type:
article
PUBLISHED VERSION:
10.1021/ic101904j
PERMANENT LINK:
http://hdl.handle.net/11282/309953

Full metadata record

DC FieldValue Language
dc.contributor.authorMauck, Catherine M.en_US
dc.contributor.authorvan den Heuvel, Titusen_US
dc.contributor.authorHull, Michaela M.en_US
dc.contributor.authorZeller, Matthiasen_US
dc.contributor.authorOertel, Catherine M.en_US
dc.date.accessioned2013-12-23T16:21:56Zen
dc.date.available2013-12-23T16:21:56Zen
dc.date.issued2010-11en
dc.identifier.citationMauck, Catherine M., Titus W. P. van den Heuvel, Michaela M. Hull, Matthias Zeller, et al. 2010. "Synthesis And Structures Of Pb3O2(CH3COO)2 0.5H2O and Pb2O(HCOO)2: Two Corrosion Products Revisited." Inorganic Chemistry 49(22): 10736-10743.en_US
dc.identifier.issn0020-1669en_US
dc.identifier.urihttp://hdl.handle.net/11282/309953en
dc.description.abstractReactions of carboxylic acids with lead play an important role in the atmospheric corrosion of lead and lead-tin alloys. This is of particular concern for the preservation of lead-based cultural objects, including historic lead-tin alloy organ pipes. Two initial corrosion products, Pb3O2(CH3COO)(2)center dot 0.5H(2)O (1) and Pb2O(HCOO)(2) (2), had been identified through powder diffraction fingerprints in the Powder Diffraction File, but their structures had never been determined. We have crystallized both compounds using hydrothermal solution conditions, and structures were determined using laboratory and synchrotron single-crystal X-ray diffraction data. Compound 1 crystallizes in P (1) over bar, and 2 in Cccm. These compounds may be viewed as inorganic-organic networks containing single and double chains of edge-sharing Pb4O tetrahedra and have structural similarities to inorganic basic lead compounds. Bond valence sum analysis has been applied to the hemidirected lead coordination environments in each compound. Atmospheric exposure experiments contribute to understanding of the potential for conversion of these short-term corrosion products to hydrocerussite, Pb-3(CO3)(2)(OH)(2), previously identified as a long-term corrosion product on lead-rich objects. Each compound was also characterized by elemental analysis, thermogravimetric analysis and differential scanning calorimetry (TGA-DSC), and Raman spectroscopy.en_US
dc.language.isoen_USen_US
dc.publisherAmerican Chemical Societyen_US
dc.identifier.doi10.1021/ic101904jen
dc.subject.departmentChemistryen_US
dc.titleSynthesis And Structures Of Pb3O2(CH3COO)2 0.5H2O and Pb2O(HCOO)2: Two Corrosion Products Revisiteden_US
dc.typearticleen_US
dc.identifier.journalInorganic Chemistryen_US
dc.subject.keywordBasic lead carbonatesen_US
dc.subject.keywordAcetic acid vaporen_US
dc.subject.keywordMetal-organic frameworken_US
dc.subject.keywordCrystal structureen_US
dc.subject.keywordCorrosion and anti-corrosivesen_US
dc.subject.keywordX-rayen_US
dc.subject.keywordInorganic-compoundsen_US
dc.subject.keywordChemistryen_US
dc.subject.keywordNitratesen_US
dc.subject.keywordDiffractionen_US
dc.subject.keywordChemistry, inorganic and nuclearen_US
dc.identifier.volume49en_US
dc.identifier.issue22en_US
dc.identifier.startpage10736en_US
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