Induced optical rotation and circular dichroism of symmetric and racemic aliphatic carbonyl compounds

Mirror-Symmetry-Breaking in Poly[(9,9-di-n-octylfluorenyl-2,7-diyl)-alt-biphenyl] (PF8P2) is Susceptible to Terpene Chirality, Achiral Solvents, and Mechanical Stirring

“…Bosnich was the first to find ICD effects at n- π * transitions of aromatic ketones including benzil and benzophenone in ( S , S )-2,3-butanediol [74]. Hayward et al studied the ICD effects of aliphatic ketones in chiral tetrahydrofuranols [75]. Noack suggested the existence of a molecular complex with a 1:1 molar ratio between ketones and l -menthol [76].…”

The extrinsic circular dichroism of J-aggregate species of achiral dyes

“…Bond lengths and angles for chemically equivalent atomic groupings, averaged in accord with approximate C2c molecular symmetry, include: Fe-Fe', 2.520 ( I ) A;12 Fe-Ct, 1.726 (9,3,3) & I 2 Fe-Cb, 1.920 (7,6,12) A;'* Fe-C(cyclopentadienyl), 2.1 19 (7,10,22) A; C -0 , 1.176 (9,3,6) A; cyclopentadienyl C-C, 1.422 ( 1 0,15,27) A; Si-C(methyl), 1.862 (8,2,2) A; Si-C(cyclopentadienyl), 1.876 (7,2,2) A; Fe-Cb-Fe', 82.0 (3,2,2)';12 Cb-Fe-Cb', 95.5 (3,4,4)'; Cb-Fe-C:, 90.4 (3,6,12)'; Fe-Cb-Ob, 138.9 (6,3,5)'; Fe-Ct-Ot, 177.9 (10,6,7)'; and C,-Fe-Fe', 103.2 (3,9,9)'. The similarity of these bonding parameters with those determined for cis-[(q5-CsH,)Fe(p-CO)(CO)]213 (7) seems to indicate that the bridging Z group in ligand 3 has had little, if any, effect on the overall conformation of the [(v5-CsHs)Fe(p-CO)(CO)]2 grouping.…”

Chirogenesis and Pfeiffer Effect in Optically Inactive EuIII and TbIII Tris(β-diketonate) Upon Intermolecular Chirality Transfer From Poly- and Monosaccharide Alkyl Esters and α-Pinene: Emerging Circularly Polarized Luminescence (CPL) and Circular Dichroism (CD)

“…In recent years, controlled chirogenesis led by several scenarios of intermolecular chirality transfer endowed with natural and human-made resources has become the most popular phenomenon allowing for an efficient generation of the desired optically active substances in the realms of organic chemistry (Bosnich, 1967 ; Hayward and Totty, 1969 ; Noack, 1969 ; Soai et al, 2019 ), supramolecular chemistry (Kobayashi et al, 1993 ; Huang et al, 1998 ; Prince et al, 2000 ; Borovkov et al, 2004 ; Hembury et al, 2008 ; Aida et al, 2012 ; Borovkov, 2014 ; Liu et al, 2015 ; Goto et al, 2017 ), polymer chemistry (Green et al, 1993 ; Yashima et al, 1995 ; Nakashima et al, 2001 ; Kawagoe et al, 2010 ; Numata and Shinkai, 2011 ; Lee et al, 2012 ; Duan et al, 2014 ; Fujiki, 2014 ; Wang et al, 2014 ; Akagi, 2019 ), and molecular aggregation/colloidal/gel chemistry (Palmans and Meijer, 2007 ; Isare et al, 2010 ; George et al, 2011 ; Mei et al, 2015 ; Roose et al, 2016 ; Sang et al, 2019 ). Particularly, chirogenesis in metal coordination chemistry by the chirality transfer has long been one of the central subjects in inorganic chemistry 1 (Mason and Norman, 1965 ; Kirschner and Ahmad, 1968 ; Kirschner and Bakkar, 1982 ; Mason, 1982 ; Brittain, 1983 , 1989 ; Riehl and Richardson, 1986 ; Tsukube and Shinoda, 2002 ; Di Bari and Salvadori, 2005 ; Muller, 2009 , 2014 ; Bünzli, 2010 ; Carr et al, 2012 ; Tanner, 2013 ; Miyake, 2014 ; Kumar et al, 2015 ; Zinna and Di Bari, 2015 ; Kono et al, 2016 ; Longhi et al, 2016 ; Lunkley et al, 2018 ; Wong et al, 2019 ).…”