2-(Alkoxymethyl)phenylsilicon compounds: The search for pentacoordination

被引：24

作者：

Mix, A ^{[1
]}

Berlekamp, UH ^{[1
]}

Stammler, HG ^{[1
]}

Neumann, B ^{[1
]}

Jutzi, P ^{[1
]}

机构：

[1] UNIV BIELEFELD,FAC CHEM,D-33615 BIELEFELD,GERMANY

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 1996年 / 521卷 / 1-2期

关键词：

silicon; 2-(alkoxymethyl)phenylsilanes; Si-pentacoordination; crystal structure; siliconium ion;

D O I：

10.1016/0022-328X(96)06326-7

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The synthesis of 2-(methoxymethyl)phenylsilanes and 2-(isopropoxymethyl)phenylsilanes is described. The coordination behaviour of the ether side chains has been studied by NMR spectroscopy. In 2-(alkoxymethyl)phenylsilicon compounds with methoxy, hydride or phenyl groups the silicon atom is assumed to be tetracoordinated. Pentacoordination is confirmed in trifluoro-[2-(methoxymethyl)phenyl]silane (11) and trifluoro-[2-(isopropoxymethyl)phenyl]silane (12). The free energy of activation for ligand permutation at silicon in trifluoro-[2-(methoxymethyl)phenyl]silane (11) is estimated to be below 9 kcal mol(-1). The synthesis of phenyl-[2-(methoxymethyl)phenyl]silyl triflate (13) is described. In the solid state a short silicon-donor oxygen distance is observed, indicating strong bonding interaction. The structure of 13 in solution is discussed on the basis of NMR data and conductivity measurements.

引用

页码：177 / 183

页数：7

共 31 条

[1] [Anonymous], 1989, ANGEW CHEM, V101, P1069
[2] STRUCTURAL STUDIES ON COMPOUNDS WITH SILICON OF HIGHER COORDINATION - MODELS FOR STUDY OF NUCLEOPHILIC-SUBSTITUTION ON SILICON CENTERS
AUNER, N
PROBST, R
HAHN, F
HERDTWECK, E
[J]. JOURNAL OF ORGANOMETALLIC CHEMISTRY, 1993, 459 (1-2) : 25 - 41
[3] SYNTHESIS AND X-RAY STRUCTURE OF INTRAMOLECULARLY COORDINATED SILYL CATIONS
BELZNER, J
SCHAR, D
KNEISEL, BO
HERBSTIRMER, R
[J]. ORGANOMETALLICS, 1995, 14 (04) : 1840 - 1843
[4] BOER FP, 1970, J AM CHEM SOC, V92, P801
[5] VAN DER WAALS VOLUMES + RADII
BONDI, A
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1964, 68 (03) : 441 - +
[6] SYNTHESIS AND X-RAY STRUCTURE OF AN SP(2) SILICON STABILIZED BY 2 INTRAMOLECULAR COORDINATIONS
BRELIERE, C
CARRE, F
CORRIU, R
MAN, MWC
[J]. JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1994, (20) : 2333 - 2334
[7] PENTACOORDINATE SILICON-COMPOUNDS - STEREOCHEMICAL NONRIGIDITY OF CHELATES FORMED BY INTRAMOLECULAR RING-CLOSURE - CRYSTAL-STRUCTURE OF 8-DIMETHYLAMINO-1-TRIFLUOROSILYLNAPHTHALENE
CARRE, F
CORRIU, RJP
KPOTON, A
POIRIER, M
ROYO, G
YOUNG, JC
BELIN, C
[J]. JOURNAL OF ORGANOMETALLIC CHEMISTRY, 1994, 470 (1-2) : 43 - 57
[8] CARRE F, 1994, ANGEW CHEM, V106, P1152
[9] CHAUHAN BSP, 1995, ORGANOMETALLICS, V14, P1547
[10] REACTIVITY OF PENTACOORDINATE AND HEXACOORDINATE SILICON-COMPOUNDS AND THEIR ROLE AS REACTION INTERMEDIATES
CHUIT, C
CORRIU, RJP
REYE, C
YOUNG, JC
[J]. CHEMICAL REVIEWS, 1993, 93 (04) : 1371 - 1448

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