cis-Mini-3

The term "cis-Mini-3" in the context of chemistry refers to a specific isomer of a compound that is part of a series of molecules related to β-carotene. The "cis" prefix indicates that certain substituents on the molecule are on the same side of a double bond or a ring structure, which is a common notation in organic chemistry to describe the geometry of a molecule.

The search results provide information about the X-ray crystal structure of cis-Mini-3, which is described as a highly crowded cis isomer of the lowest member of the homologs of β-carotene[4]. This molecule has been determined at 120K, which suggests that the study was conducted at low temperatures to stabilize the structure for analysis. The term "spiralene" mentioned in the results[5][6] likely refers to the spiral or helical shape that the molecule adopts due to steric crowding. Steric crowding occurs when the spatial arrangement of atoms or groups within a molecule prevents it from adopting a more relaxed or extended conformation.

The synthesis and photochemistry of cis-Mini-3 and related compounds have also been studied, as indicated by the search results[7]. These studies are important for understanding the behavior of such molecules under various conditions, including light exposure, which can lead to cis-trans isomerization and other chemical reactions.

In summary, cis-Mini-3 is a chemically significant molecule with a complex structure that has been studied for its physical and chemical properties, particularly in relation to its structure and behavior under different conditions.

Citations:

[1] https://catalog.utexas.edu/general-information/coursesatoz/ch/

[2] https://lavelle.chem.ucla.edu/forum/viewtopic.php?t=48188

[3] https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Organic_Chemistry_Lab_Techniques_%28Nichols%29/04:_Extraction/4.07:_Reaction_Work-Ups

[4] https://www.sciencedirect.com/science/article/abs/pii/S0040403996022447

[5] https://www.semanticscholar.org/paper/b2d73f90e68f2015666f292eb49f32609ad3e399

[6] https://www.sciencedirect.com/science/article/abs/pii/0040403994853541

[7] https://scholarspace.manoa.hawaii.edu/items/facb58b4-41a5-4673-912f-817bd3628a5f

[8] https://webbook.nist.gov/cgi/cbook.cgi?ID=C5454795