Bibliografías temáticas / Complexe homochiral

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Literatura académica sobre el tema "Complexe homochiral"

Autor: Grafiati
Publicado: 21 de diciembre de 2024
Última modificación: 31 de julio de 2025

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Artículos de revistas sobre el tema "Complexe homochiral"

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Kaźmierczak, Magdalena, Łukasz Dobrzycki, Maciej Dranka, and Paweł Horeglad. "The Effect of Alkyl Substituents on the Formation and Structure of Homochiral (R*,R*)-[R2Ga(µ-OCH(Me)CO2R′)]2 Species—Towards the Factors Controlling the Stereoselectivity of Dialkylgallium Alkoxides in the Ring-Opening Polymerization of rac-Lactide." Molecules 30, no. 1 (2025): 190. https://doi.org/10.3390/molecules30010190.

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Building on our previous studies, which have demonstrated that homochiral propagating species—(R*,R*)-[Me2Ga(µ-OCH(Me)CO2R)]2—were crucial for the heteroselectivity of [Me2Ga(µ-OCH(Me)CO2Me)]2 in the ring-opening polymerization (ROP) of racemic lactide (rac-LA), we have investigated the effect of alkyl groups on the structure and catalytic properties of dialkylgallium alkoxides in the ROP of rac-LA. Therefore, we have isolated and characterized the rac-[R2Ga(µ-OCH(Me)CO2Me]2 (R = Et (1), iPr (2) and rac-[R2Ga(µ-OCH(Me)C5H4N]2 (R = Et (3), iPr (4)) complexes, to demonstrate the effect of alkyl
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2

Ma, Ting-Ting, Xiao-Peng Sun, Zi-Shuo Yao, and Jun Tao. "Homochiral versus racemic polymorphs of spin-crossover iron(ii) complexes with reversible LIESST effect." Inorganic Chemistry Frontiers 7, no. 5 (2020): 1196–204. http://dx.doi.org/10.1039/c9qi01590f.

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3

Roithová, Jana. "Diastereoisomeric proton-bound complexes of 1,5-diaza-cis-decalin in the gas phase." Collection of Czechoslovak Chemical Communications 74, no. 2 (2009): 243–54. http://dx.doi.org/10.1135/cccc2008185.

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Diastereoisomeric proton-bound complexes of 1,5-diaza-cis-decalin (1) with butan-2-amine (2) are studied by means of the DFT calculations and mass spectrometry. The calculations reveal that 2 is bound via proton to only one nitrogen atom of the bicyclic base 1. The homochiral complex is favored by about 4 kJ/mol over the heterochiral complex. For a more loosely bound ion-pair complex [(1H)I(2H)]+ of the protonated bases 1 and 2 with an iodine counterion the energy difference drops to about 2 kJ/mol. Chiral effects in the formation of [(1)H(2)]+ are studied by the collision-induced dissociation
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4

Liu, Yu-Ling, Jia-Zhen Ge, Zhong-Xia Wang, and Ren-Gen Xiong. "Metal–organic ferroelectric complexes: enantiomer directional induction achieved above-room-temperature homochiral molecular ferroelectrics." Inorganic Chemistry Frontiers 7, no. 1 (2020): 128–33. http://dx.doi.org/10.1039/c9qi01197h.

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5

Howard, Philip W., G. Richard Stephenson, and Stephen C. Taylor. "Convenient access to homochiral tricarbonyliron complexes." Journal of the Chemical Society, Chemical Communications, no. 24 (1988): 1603. http://dx.doi.org/10.1039/c39880001603.

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6

Sapotta, Meike, Peter Spenst, Chantu R. Saha-Möller, and Frank Würthner. "Guest-mediated chirality transfer in the host–guest complexes of an atropisomeric perylene bisimide cyclophane host." Organic Chemistry Frontiers 6, no. 7 (2019): 892–99. http://dx.doi.org/10.1039/c9qo00172g.

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7

Gao, Wan-Qing, Yin-Shan Meng, Chun-Hua Liu, Yao Pan, Tao Liu, and Yuan-Yuan Zhu. "Spin crossover and structural phase transition in homochiral and heterochiral Fe[(pybox)2]2+ complexes." Dalton Transactions 48, no. 19 (2019): 6323–27. http://dx.doi.org/10.1039/c8dt04893b.

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8

Míšek, Jiří, Miloš Tichý, Irena G. Stará, Ivo Starý, and Detlef Schröder. "Preferential formation of homochiral silver(I) complexes upon coordination of two aza[6]helicene ligands to Ag+ ions." Collection of Czechoslovak Chemical Communications 74, no. 2 (2009): 323–33. http://dx.doi.org/10.1135/cccc2008184.

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By means of selective deuterium labeling of 1-aza[6]helicene combined with resolution of the enantiomers, chiral discrimination in silver(I)-bound dimers of the type [LAgL′]+ is probed by electrospray mass spectrometry. The analysis of the results reveals a pronounced preference for the formation of homochiral dimers (P,P and M,M, respectively) over the statistically preferred heterochiral variant (P,M), which is fully consistent with previous data about the formation of homochiral dimers in the condensed phase. Further, competitive experiments with mixtures of 1- and 2-aza[6]helicene suggest
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9

Kataeva, Olga, Kirill Metlushka, Kamil Ivshin, et al. "Supramolecular chirality in the crystals of mononuclear and polymeric cobalt(ii) complexes with enantiopure and racemic N-thiophosphorylated thioureas." CrystEngComm 23, no. 10 (2021): 2081–90. http://dx.doi.org/10.1039/d0ce01871f.

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The control of stereochemistry in Co(ii) complexes was provided by additional pyridine and pyrazine ligands. 1D and 2D supramolecular homochiral arrangements in racemic crystals of mononuclear complexes are transferred to their polymeric counterparts.
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10

Jiao, Luyang, Mengying Du, Yameng Hou, Yuan Ma, and Xianglei Kong. "Homochiral or Heterochiral: A Systematic Study of Threonine Clusters Using a FT ICR Mass Spectrometer." Symmetry 14, no. 1 (2022): 86. http://dx.doi.org/10.3390/sym14010086.

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The strong chiral preferences of some magic clusters of amino acids have attracted continually increasing interests due to their unique structures, properties and possible roles in homochirogenesis. However, how chirality can influence the generation and stability of cluster ions in a wild range of cluster sizes is still unknown for most amino acids. In this study, the preference for threonine clusters to form homochiral and heterochiral complex ions has been investigated by electrospray ionization (ESI) mass spectrometry. Abundant cluster [Thrn+mH]m+ ions (7 ≤ n ≤ 78, 1 ≤ m ≤ 5) have been obs
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Tesis sobre el tema "Complexe homochiral"

1

Dussart, Caitlyn. "Chiral self-recognition study of metallic complexes : towards coordination polymers." Electronic Thesis or Diss., Strasbourg, 2024. http://www.theses.fr/2024STRAE006.

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Les assemblages polymériques métallo-supramoléculaires constituent une nouvelle classe de matériaux apparue au cours des dernières décennies. Ces matériaux présentent un large éventail de propriétés qui dépendent de la nature des métaux et des ligands ditopiques utilisés. La réversibilité des liaisons de coordination offre également un caractère dynamique au système qui peut répondre à un stimulus externe. En introduisant de la chiralité dans ces systèmes moléculaires, nous pouvons étudier la capacité de ces structures moléculaires à s’associer ou à se désolidariser pour former des espèces hom
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2

Preston, Simon Christopher. "Asymmetric synthesis via iron acyl complexes." Thesis, University of Oxford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.236153.

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3

Buffet, Jean-Charles. "Homochiral metal complexes for biodegradable polymer synthesis." Thesis, University of Edinburgh, 2010. http://hdl.handle.net/1842/4618.

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Chapter One introduces the principle of alkoxide and phosphine oxide as ligands for lanthanides and electropositive metals, ligand self-recognition, stereoselective polymerisation of lactide, fixation of CO2 and finally copolymerisation of CO2 and epoxide. Chapter Two shows the synthesis of the proligands rac-HLR (a racemic phosphine oxide-alkoxide, A, where R = tBu, Ph or C6H3-Me-3,5) and explores the resolution into diastereomeric RRR- and SSS-M(LR)3 to afford C3–symmetric M(LR)3 complexes, B (where M = Sc, Lu, Y, In, Bi or La). It also demonstrates that the process is under thermodynamic co
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Capítulos de libros sobre el tema "Complexe homochiral"

1

Jin, Mingoo. "Luminescent Mechanochromism of a Chiral Complex: Distinct Crystal Structures and Color Changes of Racemic and Homochiral Gold(I) Isocyanide Complexes with a Binaphthyl Moiety." In Novel Luminescent Crystalline Materials of Gold(I) Complexes with Stimuli-Responsive Properties. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-4063-9_3.

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2

Beaulieu, Pierre l., and robert dáziel. "Addition of electrophilic organoselenium reagents to carbon-carbon double bonds." In Organoselenium Chemistry. Oxford University PressOxford, 1999. http://dx.doi.org/10.1093/oso/9780198501411.003.0003.

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Abstract Since the discovery in the late 1950s that species of the type RSeX add stereospecifically to simple alkenes, electrophilic selenium-based reagents have provided the synthetic chemist with an ever-growing arsenal of methods for the construction of complex organic molecules. Comprehensive reviews of the rich chemistry characteristic of electrophilic selenium species have appeared. In this chapter we have concentrated on the practical aspects of this chemistry, limiting ourselves to the generation and use of novel organoselenium electrophiles. Representative examples are provided of app
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