Diphenyl (p-tolylamido)phosphate

Abstract

The P atom in the title compound, C19H18NO3P, exhibits a distorted tetra­hedral configuration while the N atom shows a planar coordination. In the crystal, inter­molecular N—H⋯O hydrogen bonds form centrosymmetric dimers.

Synthesis, Spectroscopic Study and Crystal Structure of a New Amidophosphonate, (C₆H₅O)₂P(O)(NHCH(CH₃)(C₂H₅))

“…6 Recently, crystal structures of some phosphoramides have been reported. 7,8 Here, we report on the synthesis and single-crystal X-ray determination of diphenyl (2-butylamido) phosphonate (I), with the chemical structure as shown in Fig. 1.…”

“…8 The NH group adopts a gauche orientation relative to the phosphoryl group (dihedral angle between H1N1P1 plane and O1P1N1 plane is 63.80 ). The molecules are aggregated through the N1-H1···O1-P1 hydrogen bond (with d(N1···O1) = 2.971(5)Å) in a one-dimensional chain along the b axis.…”

The Step‐Wise Synthesis of Oligomeric Phosphoramidates

“…The central N atom showed planar coordination while both the terminal P centers exhibited distorted tetrahedral geometry. The N−P2 and N−P1 bond lengths were found to be 1.6722(15) Å and 1.6647(14) Å respectively, which are longer than the N−P bond length reported for the starting compound, 1 b (1.6279 Å) [58] and 2 (with R=R’’=Ph, R’=Me; 1.651(2) Å and 1.669(2) Å, respectively) [59] . The P1−N−P2 bond angle in 2 a was found to be 120.39(9)° which is narrower than the P1−N−P2 bond angle reported for 2 (with R=R’’=Ph, R’=Me) at 124.3(2)° [59] .…”

Diphenyl (o-tolylamido)phosphonate

“…In previous work, the structure of diphenyl (p-tolylamido)phosphate was reported (Pourayoubi et al, 2010). Here, we report on the synthesis and crystal structure of title compound.…”

“…1) consists of two independent molecules. The P═O, P-O and P-N bond lengths are standard for amidophosphoric acid ester compounds (Pourayoubi et al, 2010). The P atoms of two independent molecules are in slightly distorted tetrahedral environments.…”