In chemistry, tendency of trans ligands to change into other ligands
In inorganic chemistry, the trans effect is the increased lability of ligands that are trans to certain other ligands, which can thus be regarded as trans-directing ligands. It is attributed to electronic effects and it is most notable in square planar complexes, although it can also be observed for octahedral complexes.[1] The analogous cis effect is most often observed in octahedral transition metal complexes.
In addition to this kinetic trans effect, trans ligands also have an influence on the ground state of the molecule, the most notable ones being bond lengths and stability. Some authors prefer the term trans influence to distinguish it from the kinetic effect,[2] while others use more specific terms such as structural trans effect or thermodynamic trans effect.[1]
The discovery of the trans effect is attributed to Ilya Ilich Chernyaev,[3] who recognized it and gave it a name in 1926.[4]
^ abCoe, B. J.; Glenwright, S. J. Trans-effects in octahedral transition metal complexes. Coordination Chemistry Reviews2000, 203, 5-80.
^Robert H. Crabtree (2005). The Organometallic Chemistry of the Transition Metals (4th ed.). New Jersey: Wiley-Interscience. ISBN 0-471-66256-9.
^Kauffmann, G. B. I'lya I'lich Chernyaev (1893-1966) and the Trans Effect. J. Chem. Educ.1977, 54, 86-89.
^Chernyaev, I. I. The mononitrites of bivalent platinum. I. Ann. inst. platine (USSR) 1926, 4, 243-275.
chemistry, the transeffect is the increased lability of ligands that are trans to certain other ligands, which can thus be regarded as trans-directing ligands...
trans or trans- in Wiktionary, the free dictionary. Trans- is a Latin prefix meaning "across", "beyond", or "on the other side of". Used alone, trans...
effects. Therefore, the cis effect has the opposite trend of the trans-effect, which effectively labilizes ligands that are trans to strong pi accepting and...
Trans fat, also called trans-unsaturated fatty acids, or trans fatty acids, is a type of unsaturated fat that occurs in foods. Trace concentrations of...
the cis configuration and one in trans, which makes it simultaneously a cis- and a trans-fatty acid. Concerns about trans fatty acids in human diet were...
isomers: cis- (Z) and trans- (E), with the trans-isomer shown in the top image. Resveratrol exists conjugated to glucose. The trans- form can undergo photoisomerization...
trans-Dichlorodiammineplatinum(II) is the trans isomer of the coordination complex with the formula trans-PtCl2(NH3)2, sometimes called transplatin. It...
distinguishes pairs of cis- and trans-isomers of [PtA2X2] (A = NH3, X = halogen or pseudohalide). Upon treatment with thiourea, the trans-dihalides give less soluble...
cobalt atom, pulling it down into the plane of the corrin ring. The transeffect determines the polarizability of the Co–C bond so formed. However, once...
effect in the Minolta Maxxum 7) Fujinon XF 56mm F1.2 R APD (a similar lens introduced by Fujifilm in 2014) Venus Optics Laowa 105mm f/2 Smooth Trans Focus...
Transplatin, the trans-stereoisomer of cisplatin, has formula trans-[PtCl2(NH3)2] and does not exhibit a comparably useful pharmacological effect. Two mechanisms...
The distancing effect, also translated as alienation effect (German: Verfremdungseffekt or V-Effekt), is a concept in performing arts credited to German...
The ouzo effect (/ˈuːzoʊ/ OO-zoh), also known as the louche effect (/luːʃ/ LOOSH) and spontaneous emulsification, is the phenomenon of formation of a...
C-donor R1 ligand has a much higher transeffect. This trans influence is a measure of how competitive ligands trans to each other will compete for palladium's...
30% of trans people (41% for black trans people) experience homelessness at some point in their lives. According to the Vera Institute, trans people in...
chemistry and identified what is termed in coordination chemistry as the transeffect. He was a specialist on the refining of rhodium, palladium, platinum...
by a heterosexual man to an androphilic trans woman. Broadly, the defenses may be called the "gay and trans panic defense" or the "LGBTQ+ panic defense"...
the trans-influence, and it varies in intensity between ligands. A partial list of trans-influencing ligands is as follows, from highest trans-effect to...
The Trans Europ Express, or Trans-Europe Express (TEE), was an international first-class railway service in western and central Europe that was founded...
than the trans,trans conformation—this is about two times as big as the effect in sugars because there are two rotatable bonds (hence it is trans around...
Global Information