Structural characterisation of the giant organometallic platinum cluster Pt309(phen*)36O30 using EXAFS

被引:14
作者
Benfield, RE [1 ]
Filipponi, A
Morgante, N
Schmid, G
机构
[1] Univ Kent, Sch Phys Sci, Mat Res Ctr, Canterbury CT2 7NR, Kent, England
[2] European Synchrotron Radiat Facil, F-38043 Grenoble, France
[3] Univ Milan, Dipartimento Sci Mat, I-20126 Milan, Italy
[4] Univ Essen Gesamthsch, Inst Anorgan Chem, D-45117 Essen, Germany
基金
英国工程与自然科学研究理事会;
关键词
platinum; clusters; EXAFS; lattice contraction; XANES;
D O I
10.1016/S0022-328X(98)00878-X
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The structure of the high-nuclearity organometallic platinum cluster material Pt-309(phen*)(36)O-30 has been investigated by X-ray absorption spectroscopy. Analysis of Pt L-3-edge EXAFS data, using platinum foil as a reference, shows that the platinum clusters have cubic close packed geometry. A slight contraction of the Pt-Pt bond length from the bulk was observed. XANES analysis shows that the platinum atoms in the clusters have a low mean oxidation state, very close to that in metallic platinum. (C) 1999 Elsevier Science S.A. All rights reserved.
引用
收藏
页码:299 / 304
页数:6
相关论文
共 40 条
[1]  
Benfield R. E., 1994, PHYS CHEM METAL CLUS, P249
[2]   EXAFS INVESTIGATIONS OF HIGH-NUCLEARITY PD CLUSTERS [J].
BENFIELD, RE ;
FILIPPONI, A ;
BOWRON, DT ;
NEWPORT, RJ ;
GURMAN, SJ ;
SCHMID, G .
PHYSICA B, 1995, 208 (1-4) :671-673
[3]   THE RELATIONSHIP OF AU55(PPH3)12CL6 TO COLLOIDAL GOLD [J].
BENFIELD, RE ;
CREIGHTON, JA ;
EADON, DG ;
SCHMID, G .
ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS, 1989, 12 (1-4) :533-536
[5]   MEAN COORDINATION NUMBERS AND THE NONMETAL METAL TRANSITION IN CLUSTERS [J].
BENFIELD, RE .
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1992, 88 (08) :1107-1110
[6]  
BENFIELD RE, 1993, Z PHYS D ATOM MOL CL, V26, pS4
[7]   THE STRUCTURES AND FLUXIONAL BEHAVIOR OF THE BINARY CARBONYLS - A NEW APPROACH .2. CLUSTER CARBONYLS MM(CO)N (N=12,13,14,15, OR 16) [J].
BENFIELD, RE ;
JOHNSON, BFG .
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1980, (09) :1743-1767
[8]   NOVEL GOLD-DITHIOL NANO-NETWORKS WITH NONMETALLIC ELECTRONIC-PROPERTIES [J].
BRUST, M ;
BETHELL, D ;
SCHIFFRIN, DJ ;
KIELY, CJ .
ADVANCED MATERIALS, 1995, 7 (09) :795-&
[9]   LARGE METAL-CARBONYL CLUSTERS (LMCC) [J].
CHINI, P .
JOURNAL OF ORGANOMETALLIC CHEMISTRY, 1980, 200 (01) :37-61
[10]   THE EFFECT OF ANHARMONICITY ON THE EXAFS COORDINATION-NUMBER IN SMALL METALLIC PARTICLES [J].
CLAUSEN, BS ;
TOPSOE, H ;
HANSEN, LB ;
STOLTZE, P ;
NORSKOV, JK .
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1993, 32 :95-97