THE REACTIONS OF ALKYNLCYCLOPHOSPHAZENES WITH METAL-CARBONYLS

被引:10
作者
ALLEN, CW
MALIK, P
BRIDGES, A
DESORCIE, J
PELLON, B
机构
[1] Department of Chemistry University of Vermont, Burlington
来源
PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS | 1990年 / 49卷 / 1-4期
关键词
D O I
10.1080/10426509008038996
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The reaction of N3P3F5CΞCR (R=Ph, Me^i, n-C4H9) with CojiCO)s leads to N3P3F5CE-CRΞCo2(C0)6. The corresponding reaction with 2, 2-N3P3F4(C=CPh)2produces the novel, structurally characterized, tetracobalt species 2, 2-N3P3F4CΞCPhCCO). In the case of the previously reported N3P3F5CECPh complex, we now report that reaction with excess phosphazene leads to the cyclotrimerized material l, 2, 4-(N3P3F5)3Ph3C6(I). Detailed dynamic 19F NMR spectroscopy studies of this material shows detectable barriers to rotation about the phosphorus-carbon bond of the central arene. The reaction of a more reactive catalyst, t?5-C5H5Co(CO)2, with N3P3F5CsCPh gives rise to a variety of cyclooligomerized products. A cyclodimerized material, (N3P3F5)Ph2C2II is isolated as the colbalt stabilized entity II•CoCp. The carbonyl insertion product of the cyclodimerized complex has been isolated as well as I and its colbalt complex I•CoCp (which is believed to contain an 774 arene). The reaction of Fe(CO)5with N3P3F, CsCPh gives the iron stabilized cyclodimer, II•Fe(CO)3. The corresponding reaction with Fe2(CO)9gives a plethora of products including the cyclodimerized material noted above and its carbonyl insertion product. Other characterized products include I®Fe(CO)3(also believed to be an rjA material), an iron containing metallocycle and unique derivative in which the alkyne bridges iron and cyclopentadienone fragments. © 1990, Taylor & Francis Group, LLC. All rights reserved.
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页码:433 / 436
页数:4
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