نتایج جستجو برای: basf
تعداد نتایج: 288 فیلتر نتایج به سال:
In the title compound, C(17)H(20)N(2)O(3), the amino N atom is in a planar environment (sum of angles = 360.0°). All hy-droxy H atoms are involved in hydrogen bonding. In the crystal structure, two O-H⋯O and an O-H⋯N(imino) hydrogen bond result in the formation of a three-dimensional network. The latter hydrogen bonding causes distortion of the planarity of the 4-HO-C(6)H(4)-CH=N-C(6)H(4)- frag...
The title compound, C26H24BF2N3O, comprises a boron-dipyrromethene (BODIPY) framework and a phenolic Schiff base substituent group. The BODIPY unit is close to planar [maximum deviation from the least-squares plane = 0.040 (3) Å], and forms a dihedral angle of 80.38 (13)° with the meso-substituent phenyl ring and an angle of 56.57 (13)° with the phenolic ring in the extended substituent chain. ...
In the title compound, C(18)H(26)N(2) (2+)·2Cl(-), the complete dication is generated by crystallographic inversion symmetry; both N atoms are protonated and engaged in strong and highly directional N-H⋯Cl hydrogen bonds. Additional weak C-H⋯Cl contacts promote the formation of a tape along ca. [110]. The crystal structure can be described by the parallel packing of these tapes. The crystal stu...
In the title compound, C(12)H(10)N(2)O(3)S, the dihedral angle between the benzene and thio-phene rings is 43.17 (4)°. The crystal structure is devoid of any hydrogen-bonding inter-actions. However, π-π inter-actions between the benzene and thio-phene rings [distance between ring centroids = 3.6850 (11) Å] stack the mol-ecules along the a axis. The absolute structure could not be determined as ...
In a recent paper published in Toxicological Sciences, "Inhalation Toxicity of Multi-wall Carbon Nanotubes in Rats Exposed for Three Months", a team of European researchers have reported the findings of a 90-day inhalation toxicity study of multi-walled carbon nanotubes (MWCNTs) in rats. This study led by Robert Landsiedel, Head of the Short Term Toxicology Department at BASF SE in Germany not ...
The existence of a minimal observable length has long been suggested in quantum gravity as well as in string theory. In this context a generalized uncertainty relation has been derived which quantum theoretically describes the minimal length as a minimal uncertainty in position measurements. Here we study in full detail the quantum mechanical structure which underlies this uncertainty relation....
The existence of a minimal observable length has long been suggested in quantum gravity as well as in string theory. In this context a generalized uncertainty relation has been derived which quantum theoretically describes the minimal length as a minimal uncertainty in position measurements. Here we study in full detail the quantum mechanical structure which underlies this uncertainty relation....
The existence of a minimal observable length has long been suggested in quantum gravity as well as in string theory. In this context a generalized uncertainty relation has been derived which quantum theoretically describes the minimal length as a minimal uncertainty in position measurements. Here we study in full detail the quantum mechanical structure which underlies this uncertainty relation....
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید