Molecular shapes, orientation, and packing of polyoxometalate arrays imaged by scanning tunneling microscopy

被引：75

作者：

Kaba, MS

Song, IK

Duncan, DC

Hill, CL

Barteau, MA ^{[1
]}

机构：

[1] Univ Delaware, Dept Chem Engn, Ctr Catalyt Sci & Technol, Newark, DE 19716 USA

[2] Emory Univ, Dept Chem, Atlanta, GA 30322 USA

来源：

INORGANIC CHEMISTRY | 1998年 / 37卷 / 03期

关键词：

D O I：

10.1021/ic9705655

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Reported here are both STM images and spatially resolved tunneling spectra of four different polyoxometalate (POM) structural class members: Keggin structure, H-3[PW12O40] (spherical); Finke-Droege (FD) structure, Na-16[CU4(H2O)(2)(P2W15O56)(2)] (prolate spheroidal); Wells-Dawson (WD) structure, H-7[P2MO17VO62] (prolate spheroidal); and Pope-Jeannin-Preyssler (PJP) structure, K12.5Na1.5[NaP5W30O110] and (NH4)(14) [NaP5W30O110] (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.

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页码：398 / 406

页数：9

相关论文

共 43 条

[1] A HETEROPOLYANION WITH FIVEFOLD MOLECULAR SYMMETRY THAT CONTAINS A NONLABILE ENCAPSULATED SODIUM-ION - THE STRUCTURE AND CHEMISTRY OF [NAP5W30O110]14- [J].

ALIZADEH, MH ;

HARMALKER, SP ;

JEANNIN, Y ;

MARTINFRERE, J ;

POPE, MT .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1985, 107 (09) :2662-2669

[2] INTERACTION OF C-60 WITH THE AU(111) 23X-ROOT-3 RECONSTRUCTION [J].

ALTMAN, EI ;

COLTON, RJ .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 1994, 12 (03) :1906-1909

[3] SCANNING TUNNELING MICROSCOPY STUDIES OF THE SYNTHETIC POLYPEPTIDE POLY (GAMMA-BENZYL-L-GLUTAMATE) [J].

BREEN, JJ ;

FLYNN, GW .

JOURNAL OF PHYSICAL CHEMISTRY, 1992, 96 (16) :6825-6829

[4] DODECATUNGSTOPHOSPHORIC ACID HEXAHYDRATE, (H5O2+)3(PW12O403-) - TRUE STRUCTURE OF KEGGINS PENTAHYDRATE FROM SINGLE-CRYSTAL X-RAY AND NEUTRON-DIFFRACTION DATA [J].

BROWN, GM ;

NOESPIRLET, MR ;

BUSING, WR ;

LEVY, HA .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS, 1977, 33 (APR15) :1038-1046

[5] OBSERVATION AND CHARACTERIZATION BY SCANNING TUNNELING MICROSCOPY OF STRUCTURES GENERATED BY CLEAVING HIGHLY ORIENTED PYROLYTIC-GRAPHITE [J].

CHANG, HP ;

BARD, AJ .

LANGMUIR, 1991, 7 (06) :1143-1153

[6] FORMATION OF CRYSTALLINE ISLANDS OF C-60 ON SI(111) [J].

CHEN, DM ;

XU, H ;

CREAGER, WN ;

BURNETT, P .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 1994, 12 (03) :1910-1913

[7] REAL SPACE IMAGING OF CO-ADSORBED CO AND BENZENE MOLECULES ON RH(111) [J].

CHIANG, S ;

WILSON, RJ ;

MATE, CM ;

OHTANI, H .

JOURNAL OF MICROSCOPY-OXFORD, 1988, 152 :567-571

[8] THE STRUCTURE OF THE 9(18)-HETEROPOLY ANION IN POTASSIUM 9(18)-TUNGSTOPHOSPHATE, K6(P2W18O62).14H2O [J].

DAWSON, B .

ACTA CRYSTALLOGRAPHICA, 1953, 6 (02) :113-126

[9] ELECTRONIC-STRUCTURES OF PMO12O40 HETEROPOLYANIONS, ASMO12O40 HETEROPOLYANIONS, SIMO12O40 HETEROPOLYANIONS, GEMO12O40 HETEROPOLYANIONS AND THEIR REDUCTION BEHAVIOR [J].

EGUCHI, K ;

SEIYAMA, T ;

YAMAZOE, N ;

KATSUKI, S ;

TAKETA, H .

JOURNAL OF CATALYSIS, 1988, 111 (02) :336-344

[10] TRIVACANT HETEROPOLYTUNGSTATE DERIVATIVES .2. SYNTHESIS, CHARACTERIZATION, AND W-183 NMR OF P4W30M4(H2O)2O11216- (M = CO, CU, ZN) [J].

FINKE, RG ;

DROEGE, MW .

INORGANIC CHEMISTRY, 1983, 22 (06) :1006-1008

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