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3-(6-Methyl-2-pyrid-yl)-2-phenyl-3,4-dihydro-1,3,2-benzoxaza-phosphinine 2-oxide.

ABSTRACT: In the title compound, C(19)H(17)N(2)O(2)P, the six-membered 1,3,2-oxaza-phosphinine ring adopts a boat conformation with the phosphoryl O atom in an equatorial position. The dihedral angle between the 6-methyl-2-pyridyl and phenyl groups is 75.5?(1)°. These substituents are trans to each other, and are oriented at angles of 57.2?(1) and 74.8?(1)°, respectively, to the benzene ring. The crystal structure is stabilized by intra- and inter-molecular hydrogen bonds. The phosphoryl O atom participates in inter-molecular C-H?O inter-actions with the neighbouring mol-ecules, forming centrosymmetric R(2) (2)(14) dimers.

SUBMITTER: Surendra Babu VH 

PROVIDER: S-EPMC2971085 | biostudies-other | 2009

REPOSITORIES: biostudies-other

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3-(6-Methyl-2-pyrid-yl)-2-phenyl-3,4-dihydro-1,3,2-benzoxaza-phosphinine 2-oxide.

Surendra Babu V H H VH   Krishnaiah M M   Anil Kumar M M   Suresh Reddy C C   Kant Rajni R  

Acta crystallographica. Section E, Structure reports online 20091010 Pt 11

In the title compound, C(19)H(17)N(2)O(2)P, the six-membered 1,3,2-oxaza-phosphinine ring adopts a boat conformation with the phosphoryl O atom in an equatorial position. The dihedral angle between the 6-methyl-2-pyridyl and phenyl groups is 75.5 (1)°. These substituents are trans to each other, and are oriented at angles of 57.2 (1) and 74.8 (1)°, respectively, to the benzene ring. The crystal structure is stabilized by intra- and inter-molecular hydrogen bonds. The phosphoryl O atom participat  ...[more]

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