Results 51 to 60 of about 119,691 (156)

An X-ray study of isomorphism in simple organo-metallic series. — Part I. The tetraphenyls

open access: yes
The present paper deals with a preliminary X-ray study of the isomorphous series of organo-metallic compounds formed by combining a fourth-group clement with four phenyl radicals, the resulting compounds being the tetraphenyls of carbon, silicon ...
W. George
semanticscholar   +1 more source

Isomorphism in Two (E)-1-(4-Halophenyl)-N-[1-(4-Methylphenyl)-1H-Imidazol-4-yl]Methanimines (Halide = Cl, Br)

open access: yesJournal of Chemical Crystallography, 2012
The crystal structures of two imidazole-4-imines, (E)-1-(4-chlorophenyl)-N-[1-(4-methylphenyl)-1H-imidazol-4-yl]methanimine (1, C17H14ClN3), and (E)-1-(4-bromophenyl)-N-[1-(4-methylphenyl)-1H-imidazol-4-yl]methanimine, (2, C17H14BrN3), are isomorphous ...
Hanna Skrzypiec   +3 more
semanticscholar   +1 more source

Minimal Triangulations of Manifolds

open access: yes, 2007
In this survey article, we are interested on minimal triangulations of closed pl manifolds. We present a brief survey on the works done in last 25 years on the following: (i) Finding the minimal number of vertices required to triangulate a given pl ...
Datta, Basudeb
core   +1 more source

Periodic diffraction patterns for 1D quasicrystals

open access: yes, 2005
A simple model of 1D structure based on a Fibonacci sequence with variable atomic spacings is proposed. The model allows for observation of the continuous transition between periodic and non-periodic diffraction patterns.
Buczek, Pawel   +2 more
core   +1 more source

Quantum extended crystal PDE's

open access: yes, 2011
Our recent results on {\em extended crystal PDE's} are generalized to PDE's in the category $\mathfrak{Q}_S$ of quantum supermanifolds. Then obstructions to the existence of global quantum smooth solutions for such equations are obtained, by using ...
Prástaro, Agostino
core  

Elucidating polymorphs of crystal structures by intensity-based hierarchical clustering analysis of multiple diffraction data sets. [PDF]

open access: yesActa Crystallogr D Struct Biol, 2023
Matsuura H   +9 more
europepmc   +1 more source

Single-support serial isomorphous replacement phasing. [PDF]

open access: yesActa Crystallogr D Struct Biol, 2022
Foos N, Rizk M, Nanao MH.
europepmc   +1 more source

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