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An astrometric test of the Shanghai 1.5 m R-C reflector

✍ Scribed by Mao Ya-qing

Book ID
103652747
Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
455 KB
Volume
15
Category
Article
ISSN
0275-1062

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Synthesis and Structure of the First Ξ·3-1,2-Diphosphaallyl Complexes [(Ξ·5-C5H5)(CO)2M{Ξ·3-RPPC(SiMe3)2}] (M = Mo, R = tBu, Cy; M = W, R = tBu) from [(Ξ·5-C5H5)(CO)2M=P=C(SiMe3)2] (M = Mo, W) and Inversely Polarized Phosphaalkenes RP=C(NMe2)2 (R = tBu, Cy)
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## Abstract Reaction of [(Ξ·^5^‐C~5~H~5~)(CO)~2~M=P=C(SiMe~3~)~2~] [where M = Mo (2), W (5)] with the phosphaalkene __t__BuP=C(NMe~2~)~2~ (1a) afforded the Ξ·^3^‐1,2‐diphosphaallyl complexes [(Ξ·^5^‐C~5~H~5~)(CO)~2~M{Ξ·^3^‐__t__BuPPC(SiMe~3~)~2~}], [where M = Mo (3a); M = W (6)]. Similarly, 2 and CyP=C