A spectroscopic method, based on the interface selectivity of second-harmonic generation, is used to obtain the polarity of liquid interfaces. In this paper the second-harmonic measurement of the spectrum of the polarity indicator molecule N,N′-diethyl-p-nitroaniline (DEPNA) at the air/water interface demonstrates the method. Two different approaches are used to measure the intramolecular charg...

In the title compound, C(15)H(24)F(2)N(3)O(2)P, the phosphoryl and carbonyl groups adopt anti positions relative to each other. The P atom is in a tetra-hedral coordination environment and the environment of each N atom is essentially planar. In the crystal, adjacent mol-ecules are linked via N-H⋯O=P and N-H⋯O=C hydrogen bonds into an extended chain parallel to the a axis. The crystal studied w...

Treatment of 1-(n-butyl)-3-N-(2-Ar)acetamido-1, 3-imidazolium chloride (Ar=furylmethyl,phenylmethyl) with excess K2CO3 and [PdCl2(L−L)] (L−L=2 PPh3, dppf) afforded orange compounds composition [(1-(n-butyl)-3-N-(2-Ar)acetamido-1,3-imidazol-2-ylidene)]2Pd (Ar=furylmethyl; phenylmethyl). These complexes were characterized by NMR (1H 13C{1H} NMR), IR micro-analysis data. Subsequently, the catalyti...