[Ag(nca 2 en)(BPh 4 )], foi sintetizado e caracterizado por análise elementar e por espectroscopias de RMN de 1 H, de absorção no infravermelho e UV-vis. Sua estrutura cristalina e molecular foi determinada por difratometria de raios X (monocristal). O centro de prata(I) no complexo está em um ambiente tetraédrico distorcido e faz ligações covalentes com os dois átomos de nitrogênio da base de Schiff e com dois átomos de carbono do tetrafenilborato. No complexo, o tetrafenilborato apresenta um comportamento não-usual, agindo como um ligante bidentado. The complex N,N'-bis[3-(2-nitrophenyl)allylidene]ethane-1,2-diamine(tetraphenylborato)silver(I), [Ag(nca 2 en)(BPh 4 )], has been synthesized and characterized by CHN analyses and 1 H-NMR, IR and UV-vis spectroscopies. Its crystal and molecular structure was determined by X-ray diffractometry from single-crystal data. The coordination geometry about silver(I) is best described as a distorted tetrahedron. The Ag center is covalently bonded to two N atoms of the Schiff base and two C atoms of tetraphenylborate. In the complex, tetraphenylborate shows an unusual behavior and acts as a bidentate ligand.

Source of material Experimental detailsAll Hatoms were placed in calculated positions,with.99 Å, and refined using ariding-model approximation, with U iso (H)= 1.2U eq of the carrier atom. Fatom is disordered over two positions. DiscussionCarbacylamidophosphatesare attractive to study owing to their extensive applications in biochemistry [1,2]. These compounds are also used aschelating reagents for various metalions [3][4][5].The crystalstructure of the title compound consist of acore unit containing phosphoryl, nitrogen and carbonyl groupsinthe system = P (

The complex [Cu(nitroca2ph)2]ClO4, where nitroca2ph is N,N′‐bis(2‐nitrocinnamaldehyde)phenylenediimine, crystallizes in the triclinic space group ${\rm P}{\bar 1}$ with a = 13.167(1), b = 13.209(1), c = 14.465(1) Å, α = 83.209(9)°, β = 68.438(2)°, γ = 70.803(2)°, V = 2209.4(3) Å3, Z = 2, Dcalc = 1.527 mg/m3. The coordination polyhedron about the Cu(I) atom is best described as a distorted tetrahedron. 2‐nitroca2en acts as a bidentate ligand coordinating via two N atoms to the copper. The four Cu–N distances are 2.04 (2), 2.038(2), 2.046(2), and 2.062(2) Å.