Molecular Shapes, Orientation, and Packing of Polyoxometalate Arrays Imaged by Scanning Tunneling Microscopy

Autor:	Mark A. Barteau, Dean C. Duncan, Craig L. Hill, In K. Song, Mahmoud S. Kaba
Rok vydání:	1998
Předmět:	Chemistry Spectral line law.invention Ion Inorganic Chemistry Crystallography Keggin structure chemistry.chemical_compound Molecular geometry law Polyoxometalate Graphite Physical and Theoretical Chemistry Scanning tunneling microscope Anisotropy
Zdroj:	Inorganic Chemistry. 37:398-406
ISSN:	1520-510X 0020-1669
Popis:	Reported here are both STM images and spatially resolved tunneling spectra of four different polyoxometalate (POM) structural class members: Keggin structure, H(3)[PW(12)O(40)] (spherical); Finke-Droege (FD) structure, Na(16)[Cu(4)(H(2)O)(2)(P(2)W(15)O(56))(2)] (prolate spheroidal); Wells-Dawson (WD) structure, H(7)[P(2)Mo(17)VO(62)] (prolate spheroidal); and Pope-Jeannin-Preyssler (PJP) structure, K(12.5)Na(1.5)[NaP(5)W(30)O(110)] and (NH(4))(14) [NaP(5)W(30)O(110)] (oblate spheroidal). In all four cases, the results demonstrate the formation of well-ordered 2-D inorganic POM anion arrays (composed of catalytically active molecular constituents) on graphite. Importantly, the image shapes and lattice spacings accurately reflect the POM anisotropies, permitting the determination of anion orientation with respect to the surface plane.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3841bb1d25d5277ca68d83c93b9d8e97 https://doi.org/10.1021/ic9705655 Zobrazit plný text záznamu