In:
Heteroatom Chemistry, Wiley, Vol. 6, No. 1 ( 1995-01), p. 63-70
Abstract:
Oxidation of the cis isomer of the λ 3 ‐cyclotriphosphazane [EtNP(OCH 2 CF 3 )] 3 with trimethylamine‐N‐oxide (TMNO) gives the cis isomer of trioxo‐λ 5 ‐cyclotriphosphazane [EtNP(O)(OCH 2 CF 3 )] 3 ; the trans isomer of [EtNP(O)(OCH 2 CF 3 )] 3 is obtained by the treatment of a cis and trans mixture of [EtNP(OCH 2 CF 3 )] 3 with aqueous H 2 O 2 . The two trioxocyclotriphosphazanes have been characterized by elemental analysis, IR, and NMR ( 1 H, 13 C, 19 F, and 31 P) spectroscopy. The solid state structures of both the isomers have been determined by single crystal X‐ray diffraction. The six‐membered P 3 N 3 ring in both the isomers exhibits a twist‐boat conformation; in the cis isomer, the trifluoroethoxy substituents lie on the same side of the ring, whereas, in the trans isomer, two trifluoroethoxy groups are on one side of the ring and the third on the other side of the ring. Crystal data for cis‐[EtNP(O)(OCH 2 CF 3 )] 3 : monoclinic, P 2 1 / n , a = 13.593(3), b = 9.721(2), c = 17.539(3) Å, β = 99.49(2)°, V = 2286(1) Å 3 , Z = 4, and Final R = 0.047. Crystal data for trans‐[EtNP(O)(OCH 2 CF 3 )] 3 : monoclinic, P 2 1 / n , a = 11.685(4), b = 15.115(5), c = 13.233(5) Å, ‐ = 102.21(3)°, V = 2284(1) Å 3 , Z = 4, and Final R = 0.078.
Type of Medium:
Online Resource
ISSN:
1042-7163
,
1098-1071
DOI:
10.1002/hc.520060114
Language:
English
Publisher:
Wiley
Publication Date:
1995
detail.hit.zdb_id:
1483690-7
detail.hit.zdb_id:
1014910-7
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