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نمایش تعداد 1-10 از 401
A novel tubular hydrogen bond pattern in the crystal structure of a new diazaphosphole oxide: (4-Cl-C6H4NH)P(O)(1,2-NH)2C6H4
neighbouring molecules through (N—H)2…O═P hydrogen bonds. These interactions form a tubular arrangement of fused hydrogen-bonded rings, of R33(12) and R34(14) graph-set motifs, along [001]. An N—H…π interaction exists in the tubular shape which does not change...
Synthesis and characterization of a new phosphoramide, [C6H5O]2P(O)[NH(N2C4H8)CH3]
= 9.7336 (5) Å, c = 10.8779 (6) Å, α = 105.065(5)°, β = 95.052(5)°, γ = 113.987 (5)°, V = 868.18(10) (Å3), and Z = 2. In the crystal structure of title compound, adjacent molecules are linked via pairs of N—H•••O═P hydrogen bonds forming...
The First C(O) NHP (O)- based Phosphoric Triamide Structure With an N–H ••• π Hydrogen Bonding: A Combination of X-ray Crystallography And Theoretical Study to Evaluate The Strength of Hydrogen Bonds
of the molecules to a two-dimensional array parallel to the bc plane. A Cambridge Structural Database (CSD, version 5.37, Feb 2016) analysis shows that the N–H•••π hydrogen bond was not observed in any of 156 [RC(O)NH]P(O)[NR1R2]2 (R1≠H, R2= H or≠H) phosphoric...
Syntheses and structures of four new mixed-amide phosphoric triamides
)2CH2NH– groups are compared, along with the different molecular volumes and electron-donor strengths. In all four structures, the molecules form extended chains through N—H…O hydrogen bonds....
New rac-XP(O)(OC6H5)(NHC6H4-p-CH3) [X = N(CH3)(cyclo-C6H11) and NH(C3H5)] and rac-(C6H5CH2NH)-P(O)(OC6H5)(NH-cyclo-C6H11) mixed-amide phosphinates
-methylcyclohexylamido and allylamido substituents. In (III), the differences between the P—N bond lengths involving the cyclohexylamido and benzylamido substituents are not significant. In all three structures, the phosphoryl O atom takes part with theN—H unit in hydrogen bonding...
Extensive analysis of N—H…O hydrogen bonding in four classes of phosphorus compounds: a combined experimental and database study
The N—H…O hydrogen bond is the characteristic interaction in the crystal structures of N-benzyl-P-phenyl-N'-(p-tolyl)phosphonic diamide, C20H21N2OP or (C6H5)P(O)(NHCH2C6H5)(NHC6H4-p-CH3), (I), diphenylphosphinic 1-methylpropylamide, C16H20NOP or (C6...
A combined X-ray crystallography and theoretical study of N—H…OX (X is ═P and —C) hydrogen bonds in two new structures with a (C—O)2(N)P(═Y)(Y is O and S) skeleton
)(C6H4)(4-NH)P(S)(OCH3)2, (II), have been investigated. In the structure of (I), with an (O)2(N)P(O) skeleton, two symmetry-independent phosphoramide molecules are linked through N—H…O═P hydrogen bonds. In the structure of (II), with an (O)2(N...
Analysis of N—H…O hydrogen bonds in new C(O)—NH—P(O)-based phosphoric triamides and analogous structures deposited in the Cambridge Structural Database
types of N—H…O hydrogen bonds have been analyzed for (1), (3), (4) and (5) and 118 other structures (including 194 hydrogen bonds) deposited in the Cambridge Structural Database, containing either C(O)—NH—P(O)[N(C)(C)]2 or C(O)—NH—P(O)[NH(C)]2...