ISSN:
0030-4921
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The group [(CH3)3Si]2CH is effectively bulkier than the (CH3)3C group in inhibiting rotation about the PC bond in R2PCI compounds. In phosphonamidous chlorides, RP(CI)NR2′, increasing the bulk of the groups at nitrogen, e.g., from CH3 to (CH3)2CH to (CH3)3Si, increases the rotational barriers about the PN bond; however, changing R from (CH3)3C to [(CH3)3Si]2CH increases the barrier, which is a reversal of the trend earlier observed. It is suggested that these very bulky silylated groups represent limiting cases of steric interference.
Additional Material:
3 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1270111005
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