Crystal structures of transition metal carbides Materials Science and Technology Vol 11, No 4T Sourmail
Syntheses and crystalstructures of three new borates templated by transition-metal complexes in situ. Wang G M,Sun Y Q,Yang G Y. JSolid State Chem . 2006WANG G M,SUN Y Q,YANG G Y.Syntheses and crystal structures of threenew borates templated by transition-metal complexes in situ....
3.3. The atomic arrangement in (a) the body-centered cubic (bcc) structure, (b) the face-centered cubic (fcc) structure, and (c) the hexagonal close-packed (hcp) crystal structure. These three structures are the basic crystal structures of the metallic materials that are widely used in pr...
but also predict Sc4Mo2Al3B6(R3m)as stable and nine additional (MoxSc1–x)2AlB2structures as close to stable when the two frameworks are combined. We also identify two low-energy ternary MAB phase structures, Sc2AlB2(Pmmm) and Mo2AlB2(P4/mbm). Finally, the possibility of ...
The structures are very similar and consist of chains of BaS6 trigonal prisms which share the triangular faces to form an infinite chain. Adjacent chains are displaced so that S atoms cap one of the rectangular faces in the α phase and two faces in the β phase. The unique aspect in ...
U2LRR protein contains only five LRR motifs which are flanked by unrelated sequences14,16. We have solved the crystal structure of a ternary complex between U2B″ and U2LRR proteins with U2 snRNA hairpin IV. A comparison of the crystal structures of the ternary complex and the complex between...
intentionally placed base pair interactions bend or fold DNA strands into well-defined 2D and 3D structures. Distinct regions within a strand can be complementary to two or more other strands to create rigid branch points, a process analogous to the reciprocal exchange of strands in biological syst...
材料科学(3)crystal structure of metals
structures have smaller unit cells and higher symmetries [Supplementary Sec.SIIIA], and they are different from the aP160 in the arrangement of the prisms and are enthalpically degenerate with the aP160 at 50 and 55 GPa, but become unfavorable at higher or lower pressures (Supplementary Fig...
We report here the first crystal structures of both intra- and intermolecular quadruplexes formed from 12-nucleotide and 22-nucleotide human telomere repeat sequences. These reveal a remarkable and completely unexpected folding topology and overall structural type. Both quadruplexes were expected to cons...