Structural classification of quasi-one-dimensional ternary nitrides [PDF]
, 2016 This review focuses on the crystal structural features of ternary (mixed-metal) quasi-one-dimensional nitrides i.e., nitrides containing (cation-³⁻) coordination polyhedra sharing either corners, edges, or faces, arranged in linear chains, and ...
Francesconi, Maria Grazia +2 more
core +1 more source
Discovery of a supernova explosion at half the age of the Universe [PDF]
Nature, 1997 The ultimate fate of the Universe, infinite expansion or a big crunch, can be determined by using the redshifts and distances of very distant supernovae to monitor changes in the expansion rate.
S. Perlmutter +22 more
semanticscholar +1 more source
[2-Hydroxy-N′-(4-oxo-4-phenylbutan-2-ylidene)benzohydrazidato(2−)]pyridinecopper(II)
Acta Crystallographica Section E, 2010 The mononuclear title complex, [Cu(C17H14N2O3)(C5H5N)], was synthesized by the reaction of CuCl2·2H2O with N-(4-oxo-4-phenylbutan-2-ylidene)benzohydrazide (H2L).
Shu-Ping Zhang, Ying Wei, Si-Chang Shao
doaj +1 more source
Molecular dynamics of 18-crown-6 complexes with alkali-metal cations and urea: Prediction of their conformations and comparison with data from the cambridge structural database [PDF]
, 1993 Complexes of 18-crown-6 with alkali-metal cations (Na+, K+, and Rb+), urea, and the uncomplexed crown ether were studied in vacuo with the molecular dynamics method. Conformational data from these calculations (simulation times in the range from 6-15 ns)
Briels, W.J. +3 more
core +3 more sources
Early-type galaxy distances from the Fundamental Plane and surface brightness fluctuations [PDF]
, 2001 We compare two of the most popular methods for deriving distances to early-type galaxies: the Fundamental Plane (FP) and surface brightness fluctuations (SBF). Distances for 170 galaxies are compared.
J. Blakeslee +5 more
semanticscholar +1 more source
N-[Amino(imino)methyl]uronium tetrafluoroborate
Acta Crystallographica Section E, 2012 In the title compound, C2H7N4O+·BF4−, intermolecular N—H...O hydrogen bonds connect the cations into chains parallel to the c axis, with graph-set motif C(4).
Michaela Fridrichová +4 more
doaj +1 more source
ON THE CROSSING NUMBER OF THE JOIN OF FIVE VERTEX GRAPH WITH THE DISCRETE GRAPH Dn [PDF]
Acta Electrotechnica et Informatica, 2017 In this paper, we show the values of crossing numbers for join products of graph G on five vertices with the discrete graph Dn and the path Pn on n vertices. The proof is done with the help of software. The software generates all cyclic permutations for
Štefan BEREŽNÝ, Michal STAŠ
doaj +1 more source
Homo- und Hetero-Metall-Amide des Tris(tert-butylamino)methylsilans : Polycyclen und Cluster mit Li, Na, Mg, Al und Tl [PDF]
, 1993 The hydrogen atoms attached to nitrogen in tris(tert-butyl-amino)methylsilane (1) can be substituted by metallic main-group elements in a quite general way.
Groß, Frank +4 more
core +1 more source
Suppression of ghost distances in multiple-spin double electron-electron resonance.
Physical Chemistry, Chemical Physics - PCCP, 2013 Distance measurements by pulse electron paramagnetic resonance techniques are increasingly applied to multiple-spin systems. In the double electron-electron resonance experiment, more than two dipolar coupled spins manifest in an increased total ...
Tona von Hagens +4 more
semanticscholar +1 more source
Acta Crystallographica Section E, 2008 A discrete neutral CuII complex, [Cu(CF3SO3)2(C16H18N4)], has been derived from the symmetrical tetradentate Schiff base, N,N′-bis[1-(pyridin-2-yl)ethylidene]ethane-1,2-diamine.
Simon J. Coles +3 more
doaj +1 more source