Enantiomorphic symmetry breaking in crystallization of molten sodium chlorate.
نویسندگان
چکیده
Enantiomorphic symmetry breaking of stirred samples of molten sodium chlorate is demonstrated, revealing the unexpected involvement of an achiral solid phase. The results should stimulate future computational models of nucleation, including symmetry breaking, and have implications for mechanisms that invoke enantiomorphism in natural minerals to explain biohomochirality.
منابع مشابه
Experimental evidence of chiral symmetry breaking in crystallization from primary nucleation
Chiral symmetry breaking in stirred crystallization of sodium chlorate (NaCI03) is believed to occur via nucleation of a single chiral "mother crystal" that produces a new generation of crystals which inherit its chirality. We here report results of stirred crystallizations resulting in massive "instantaneous" primary nucleation and total symmetry breaking. The results of these experiments sugg...
متن کاملMirror Symmetry Breaking in Helical Polysilanes: Preference between Left and Right of Chemical and Physical Origin
From elemental particles to human beings, matter is dissymmetric with respect to mirror symmetry. In 1860, Pasteur conjectured that biomolecular handedness— homochirality—may originate from certain inherent dissymmetric forces existing in the universe. Kipping, a pioneer of organosilicon chemistry, was interested in the handedness of sodium chlorate during his early research life. Since Kipping...
متن کاملEnantioselective Crystallization of Sodium Chlorate in the Presence of Racemic Hydrophobic Amino Acids and Static Magnetic Fields
We study the bias induced by a weak (200 mT) external magnetic field on the preferred handedness of sodium chlorate crystals obtained by slow evaporation at ambient conditions of its saturated saline solution with 20 ppm of added racemic (DL) hydrophobic amino acids. By applying the Fisher test to pairs of experiments with opposing magnetic field orientation we conclude, with a confidence level...
متن کاملMirror symmetry breaking upon spontaneous crystallization from a dynamic combinatorial library of macrocyclic imines.
Spontaneous emergence of solid state chirality and mirror symmetry breaking occurred upon crystallization from a small templated dynamic combinatorial library (DCL) of achiral macrocyclic imines, and depended strongly on the nature of library building blocks (amines, aldehydes, template cations and anions) and crystallization temperature.
متن کاملWigner crystallization in the quantum 1D jellium at all densities
The jellium is a model, introduced by Wigner (1934), for a gas of electrons moving in a uniform neutralizing background of positive charge. Wigner suggested that the repulsion between electrons might lead to a broken translational symmetry. For classical one-dimensional systems this fact was proven by Kunz (1974), while in the quantum setting, Brascamp and Lieb (1975) proved translation symmetr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Chemical communications
دوره 46 40 شماره
صفحات -
تاریخ انتشار 2010