NEW 2,4,6-TRIISOPROPYLPHENYL-SUBSTITUTED DISILENES

被引：34

作者：

ARCHIBALD, RS ^{[1
]}

VANDENWINKEL, Y ^{[1
]}

MILLEVOLTE, AJ ^{[1
]}

DESPER, JM ^{[1
]}

WEST, R ^{[1
]}

机构：

[1] UNIV WISCONSIN,DEPT CHEM,MADISON,WI 53706

来源：

ORGANOMETALLICS | 1992年 / 11卷 / 10期

关键词：

D O I：

10.1021/om00046a026

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Two new substituted disilenes, of the type IsRSi=SiIsR (Is = 2,4,6-triisopropylphenyl; R = Me3Si (1), t-Bu (2)), were synthesized by photolysis of the corresponding polysilanes IsRSi(SiMe3)2 (3, 4). Compound 1 is the first stable disilene substituted with a non-first-row element. X-ray crystal structures are reported for the E isomers for disilenes 1 and 2 and for tetrasilane 3. Both disilenes are triclinic and have space group P1BAR. The unit cell dimensions for (E)-1 are a = 10.046 (3) angstrom, b = 10.221 (3) angstrom, c = 10.307 (3) angstrom, alpha = 67.73 (2)-degrees, beta = 86.36 (3)-degrees, and gamma = 84.47 (3)-degrees. For (E)-2 a = 9.387 (2) angstrom, b = 9.870 (3) angstrom, c = 11.457 (3) angstrom, alpha = 76.54 (2)-degrees, beta = 76.16 (2)-degrees, and gamma = 64.54 (2)-degrees. Tetrasilane 3 is monoclinic, having P2(1)/n as space group with cell dimensions a = 9.380 (3) angstrom, b = 28.676 (9) angstrom, c = 10.862 (3) angstrom, and beta = 97.47 (2)-degrees. Trisilanes Is(X)Si(SiMe3)2 (X = H, Cl, F, 1-pyrrolyl) were synthesized and photolyzed at 254 nm.

引用

页码：3276 / 3281

页数：6

共 17 条

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