منابع مشابه
N 87 - 2 . 4 26 0 13
History has had its periods of magnificent excess, when vast amounts of human effort were devoted to cultural projects that transcended the necessities of survival and commerce. Obvious examples begin with the construction of the great pyramids. Much later, Europe's cathedrals were the ultimate commitment of society's surplus energy to expressions of the spirit. The explorations of the remote r...
متن کاملDiaqua[μ-11,23-di-tert-butyl-3,7,15,19-tetraazatricyclo[19.3.1.19,13]tetracosa-1(25),2,6,9,11,13(26),14,19,21,23-dodecaene-25,26-diolato-κ4 N 3,N 7,O 25,O 26:κ4 N 15,N 19,O 25,O 26]dicopper(II) bis(perchlorate)
In the dinuclear title complex, [Cu(2)(C(30)H(38)N(4)O(2))(H(2)O)(2)](ClO(4))(2), the coordination cation has crystallographically imposed twofold rotational symmetry. The Cu(II) ion is five-coordinated by two N and two O atoms from the macrocylic ligand and one O atom from a water mol-ecule, forming a square-pyramidal N(2)O(3) geometry with the water mol-ecule in the apical position. The dista...
متن کاملPhthalimide-N-sulfonic acid and Isatin-N-sulfonic acid as highly efficient catalysts for the synthesis of bis-coumarins
Two highly efficient protocols for the production of bis-coumarins under solvent-free conditions have been introduced. The reaction of 4-hydroxycoumarin (2 eq.) with arylaldehydes (1 eq.) using phthalimide-N-sulfonic acid (PhtSA) or isatin-N-sulfonic acid (IsSA), as solid-acid catalysts, afforded the mentioned compounds with good to excellent yields in short times.Briefly, we have introduced tw...
متن کاملN 87 - 2 . 4 26 0 13 Gamma Ray Transients
History has had its periods of magnificent excess, when vast amounts of human effort were devoted to cultural projects that transcended the necessities of survival and commerce. Obvious examples begin with the construction of the great pyramids. Much later, Europe's cathedrals were the ultimate commitment of society's surplus energy to expressions of the spirit. The explorations of the remote r...
متن کاملHigh symmetry superoctahedron cluster [Mn(III)18O14]26+ from the use of N,N,N',N'-tetrakis(2-hydroxyethyl)ethylenediamine.
The use of flexible N,N,N',N'-tetrakis(2-hydroxyethyl)ethylenediamine has provided one new high symmetry superoctahedron with unprecedented aesthetically-pleasing Mn(III)18 clusters, which exhibits out-of-phase signals indicative of the slow magnetic relaxation.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Acta Crystallographica Section E Structure Reports Online
سال: 2011
ISSN: 1600-5368
DOI: 10.1107/s1600536811024949