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Journal articles on the topic 'Asymmetric bond'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Silvernail, Nathan J., Allen G. Oliver, and W. Robert Scheidt. "Temperature effects on structure: Five-coordinate (nitrosyl)(tetratolylporphinato)iron(II)." Journal of Porphyrins and Phthalocyanines 24, no. 05n07 (2020): 717–24. http://dx.doi.org/10.1142/s1088424619501517.

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We have prepared crystals of [Fe(TTP)(NO)] (TTP = tetratolylporphyrin), a five-coordinate nitrosyl complex and determined its crystal and molecular structure at two temperatures. The crystal structure at 100 K reveals two independent molecules in the asymmetric unit of the structure. One molecule is completely ordered and the second molecule has a moderately disordered nitrosyl ligand. Both molecules show similar structural features: a substantial off-axis tilt of the Fe–N(NO) bond and an asymmetry of the equatorial Fe–N[Formula: see text] bonds that is correlated with the tilt. The axial Fe–N

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2

Ghaemi Asl, Mahdi, and Muhammad Mahdi Rashidi. "Dynamic diversification benefits of Sukuk and conventional bonds for the financial performance of MENA region companies: empirical evidence from COVID-19 pandemic period." Journal of Islamic Accounting and Business Research 12, no. 7 (2021): 979–99. http://dx.doi.org/10.1108/jiabr-09-2020-0306.

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Purpose This study aims to investigate the spillover between the Middle East and North Africa (MENA) stock index and several security indices, including Sukuk and conventional bond, and ultimately compare the hedge effectiveness of Sukuk and conventional bond. Design/methodology/approach The study uses VAR (1)-asymmetric Baba, Engle, Kraft and Kroner-multivariate generalized autoregressive conditional heteroskedasticity (1,1) model to analyze the volatility and shock and asymmetric shock spillover between Sukuk index and several bond indices in the MENA region including, Bond, All Bond, High Y

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3

Park, Daehyeon, Jiyeon Park, and Doojin Ryu. "Volatility Spillovers between Equity and Green Bond Markets." Sustainability 12, no. 9 (2020): 3722. http://dx.doi.org/10.3390/su12093722.

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This study examines the market for green bonds, which have been in the spotlight as an eco-friendly investment product. We analyze the volatility dynamics and spillovers between the equity and green bond markets. As the return dynamics of financial products typically exhibit asymmetric volatility, we check whether green bonds also share this property. Our analyses confirm that although green bonds do exhibit the asymmetric volatility phenomenon, their volatility, unlike that of equity, is also sensitive to positive return shocks. An analysis of the association between the green bond and equity

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4

Stenfors, Brock A., Rachel C. Collins, Jonah R. J. Duran, Richard J. Staples, Shannon M. Biros, and Felix N. Ngassa. "Crystal structure of 4-methyl-N-propylbenzenesulfonamide." Acta Crystallographica Section E Crystallographic Communications 76, no. 7 (2020): 1070–74. http://dx.doi.org/10.1107/s2056989020007756.

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The crystal structure of the title sulfonamide, C10H15NO2S, comprises two molecules in the asymmetric unit. The S=O bond lengths of the sulfonamide functional group range from 1.428 (2) to 1.441 (2) Å, with S—C bond lengths of 1.766 (3) Å (for both molecules in the asymmetric unit), and S—N bond lengths of 1.618 (2) and 1.622 (3) Å, respectively. When both molecules are viewed down the N—S bond, the propyl group is gauche to the toluene moiety. In the crystal structure, molecules of the title compound are arranged in an intricate three-dimensional network that is formed via intermolecular C—H.

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5

Yu, Xinhong, and Wei Wang. "Hydrogen-Bond-Mediated Asymmetric Catalysis." Chemistry - An Asian Journal 3, no. 3 (2008): 516–32. http://dx.doi.org/10.1002/asia.200700415.

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6

Harcourt, RD, and ERT Tiekink. "Qualitative Valence Bond Theory for Asymmetric Coordination in Tin(IV) Dithiolate Complexes." Australian Journal of Chemistry 40, no. 3 (1987): 611. http://dx.doi.org/10.1071/ch9870611.

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Different modes of asymmetric coordination found for certain tin(IV) xanthate and dithiocarbamate complexes are rationalized in terms of valence-bond resonance schemes. As tin-atom lone-pairs are absent in these compounds, the observed asymmetry cannot be a consequence of lonepairlbond -pair repulsions.

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7

Han, Qiuxia, and Jie Li. "4-(4-Aminophenoxy)anilinium 2-hydroxy-2,2-diphenylacetate." Acta Crystallographica Section E Structure Reports Online 63, no. 11 (2007): o4380. http://dx.doi.org/10.1107/s1600536807051057.

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The asymmetric unit of the title salt, C12H13N2O+·C14H11O3 −, contains two cations and two anions, in which cation–anion pairs are linked together by an N—H...O hydrogen bond. An intramolecular O—H...O hydrogen bond occurs within each anion and forms an S(5) ring. These component ions are organized through further hydrogen bonds into layers parallel to (001).

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8

Choi, Wan-Soo. "The Dynamic Relationship among Stock, Bond, and Exchange Rate Market Volatility using A-DCC GARCH Models." Korea International Trade Research Institute 19, no. 5 (2023): 257–74. http://dx.doi.org/10.16980/jitc.19.5.202310.257.

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Purpose - This research aims to analyze the interrelationship among the volatility of stock price, interest rate, and exchange rate in Korea. The main topics are volatility spillovers and the asymmetric behaviors of each market’s volatility and correlation. Design/Methodology/Approach - This research adopts Engle et al.’s (2006) asymmetric dynamic conditional correlation (A-DCC) GARCH models with student t error distribution. The models are a GJR GARCH model with spillovers and a revised Koutmos (1996) EGARCH model. The full sample is divided into four sub-sample periods, including the g

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9

Zhou, Q. L., S. F. Zhu, Y. Cai, H. X. Mao, and J. H. Xie. "Iron-Catalyzed Asymmetric OH Bond Insertions." Synfacts 2010, no. 10 (2010): 1143. http://dx.doi.org/10.1055/s-0030-1258689.

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10

Bach, T., P. Fackler, C. Berthold, and F. Voss. "Hydrogen Bond Assisted Asymmetric Metal Catalysis." Synfacts 2011, no. 02 (2011): 0187. http://dx.doi.org/10.1055/s-0030-1259268.

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11

Costa, Daniel Pereira da, Sabrina Madruga Nobre, Bruna Gonçalves Lisboa, Juliano Rosa de Menezes Vicenti, and Davi Fernando Back. "2,2′-Dihydroxy-N,N′-(ethane-1,2-diyl)dibenzamide." Acta Crystallographica Section E Structure Reports Online 69, no. 2 (2013): o201. http://dx.doi.org/10.1107/s1600536812051963.

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The asymmetric unit of the title compound, C16H16N2O4, contains one half-molecule, the whole molecule being generated by an inversion center located at the mid-point of the C—C bond of the central ethane group. An intramolecular O—H...O hydrogen bond forms anS(6) ring motif. In the crystal, molecules are connectedviaN—H...O hydrogen bonds, generating infinite chains along [1-10].

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12

Aragoni, M. Carla, Massimiliano Arca, Francesco A. Devillanova, et al. "The Nature of the Chemical Bond in Linear Three-Body Systems: From I3–to Mixed Chalcogen/Halogen and Trichalcogen Moieties." Bioinorganic Chemistry and Applications 2007 (2007): 1–46. http://dx.doi.org/10.1155/2007/17416.

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The 3 centre-4 electrons (3c-4e) and the donor/acceptor or charge-transfer models for the description of the chemical bond in linear three-body systems, such as I3–and related electron-rich (22 shell electrons) systems, are comparatively discussed on the grounds of structural data from a search of the Cambridge Structural Database (CSD). Both models account for a total bond order of 1 in these systems, and while the former fits better symmetric systems, the latter describes better strongly asymmetric situations. The 3c-4e MO scheme shows that any linear system formed by three aligned closed-sh

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13

Dhayalan, Vasudevan, Rambabu Dandela, K. Bavya Devi, and Ragupathy Dhanusuraman. "Synthesis and Applications of Asymmetric Catalysis Using Chiral Ligands Containing Quinoline Motifs." SynOpen 06, no. 01 (2022): 31–57. http://dx.doi.org/10.1055/a-1743-4534.

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AbstractIn the past decade, asymmetric synthesis of chiral ligands containing quinoline motifs, a family of natural products displaying a broad range of structural diversity and their metal complexes, have become the most significant methodology for the generation of enantiomerically pure compounds of biological and pharmaceutical interest. This review provides comprehensive insight on the plethora of nitrogen-based chiral ligands containing quinoline motifs and organocatalysts used in asymmetric synthesis. However, it is confined to the synthesis of quinoline-based chiral ligands and metal co

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14

Zhang, Wei-Guang. "4-Chloro-N′-(3,5-dibromo-2-hydroxybenzylidene)benzohydrazide." Acta Crystallographica Section E Structure Reports Online 68, no. 4 (2012): o1209. http://dx.doi.org/10.1107/s1600536812009786.

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The asymmetric unit of the title compound, C14H9Br2ClN2O2, contains two independent molecules. Both molecules adopt anEconfiguration about the C=N bond. The dihedral angles between the benzene rings are 30.0 (2) and 51.6 (2)° in the two molecules. In the crystal, molecules are linked through N—H...O hydrogen bonds, forming chains along thebaxis. In addition, there is an intramolecular O—H...N hydrogen bond in each molecule.

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15

Güngör, Arifenur. "Asymmetric Effects of Geopolitical Risk, Climate Policy Uncertainty, and Crude Oil Prices on the US Green Bond Market." Sosyoekonomi 33, no. 65 (2025): 49–71. https://doi.org/10.17233/sosyoekonomi.2025.03.03.

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This paper examines the asymmetric effects of geopolitical risk, climate policy uncertainty, and crude oil prices on returns and realised volatility in the US green bond market. Using the nonlinear autoregressive distributed lag (NARDL) method on monthly data from January 2010 to August 2023, this paper provides evidence that, in the long run, a decline in geopolitical risk and climate policy uncertainty is associated with an increase in green bond returns. Additionally, the returns and realised volatility of green bonds are positively influenced by increased crude oil prices and the long-term

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16

Wang, Hai-Bo, Xiao-Chen Yan, and Zhi-Qian Liu. "4-Methylbenzamide oxime." Acta Crystallographica Section E Structure Reports Online 62, no. 7 (2006): o3105—o3106. http://dx.doi.org/10.1107/s1600536806024299.

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The title compound, C8H10N2O, is a derivative of benzonitrile. It crystallizes with two molecules per asymmetric unit. There are intramolecular N—H...O hydrogen bonds, as well as intermolecular N—H...O and O—H...N hydrogen-bond interactions.

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17

Steyl, Gideon. "2-(4-Flouroanilino)tropone." Acta Crystallographica Section E Structure Reports Online 63, no. 11 (2007): o4353. http://dx.doi.org/10.1107/s1600536807050271.

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The title compound, C13H10FNO, which was synthesized from the reaction of tosyloxytropone and 4-fluoroaniline, has two independent molecules of similar bond dimensions in the asymmetric unit. Adjacent molecules are linked by hydrogen bonds and C—H...F interactions.

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18

Kündig, E. Peter, Yixia Jia, Dmitry Katayev, and Masafumi Nakanishi. "Asymmetric Pd-NHC*-catalyzed coupling reactions." Pure and Applied Chemistry 84, no. 8 (2012): 1741–48. http://dx.doi.org/10.1351/pac-con-12-02-10.

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Very high asymmetric inductions result in the Pd-catalyzed intramolecular arylation of amides to give 3,3-disubstituted oxindoles when new in situ-generated chiral N-heterocyclic carbene (NHC*) ligands are employed. Structural studies show that conformational locking to minimize allylic strain is the key to understanding the function of these ligands. New applications of these ligands in the frontier area of asymmetric coupling reactions involving C(sp3)–H bonds are detailed. Highly enantioenriched fused indolines are accessible using either preformed- or in situ-generated Pd-NHC* catalysts. R

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19

Ma, Yujie, Jing Li, Jianxun Ye, Delong Liu, and Wanbin Zhang. "Synthesis of chiral chromanols via a RuPHOX–Ru catalyzed asymmetric hydrogenation of chromones." Chemical Communications 54, no. 96 (2018): 13571–74. http://dx.doi.org/10.1039/c8cc07787h.

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Chiral chromanols and their derivatives have been synthesized via a RuPHOX–Ru catalyzed asymmetric hydrogenation of chromones in high yields, >20 : 1 drs and with up to 99.9% ee. The control experiments showed that the asymmetric hydrogenation of the CC double bond occurs first followed by the reduction of the CO double bond.

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20

Göçer, İsmet, and Serdar Ongan. "Asymmetric Impacts of Inflation on the US Bond Rates and FED’s Pre-Emptive Policy." Econometric Research in Finance 5, no. 2 (2020): 143–57. http://dx.doi.org/10.2478/erfin-2020-0008.

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Abstract This study investigates the asymmetric impacts of changes in inflation rates on the US bond rates. This investigation is constructed on the Fisher Equation. To this end, the nonlinear ARDL model is applied. Empirical findings indicate that only the decreases (π− t ) in inflation rates affect bond rates. This asymmetric impact therefore shapes the FED’s monetary policy in terms of determining the bond rates at lower cost. When the inflation rate rises, the FED will know (in advance) that they do not need to increase the bond rates. This reminds us the FED’s former pre-emptive strike po

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21

Datta, Riya, V. Ramya, M. Sithambaresan, and M. R. Prathapachandra Kurup. "Crystal structure of 4-{(E)-[2-(pyridin-4-ylcarbonyl)hydrazin-1-ylidene]methyl}phenyl acetate monohydrate." Acta Crystallographica Section E Crystallographic Communications 71, no. 2 (2015): o79—o80. http://dx.doi.org/10.1107/s2056989014027819.

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The asymmetric unit of the title compound, C15H13N3O3·H2O, comprises a 4-{(E)-[2-(pyridin-4-ylcarbonyl)hydrazinylidene]methyl}phenyl acetate molecule and a solvent water molecule linked by O—H...O and O—H...N hydrogen bonds from the water molecule and a C—H...O contact from the organic molecule. The compound adopts anEconformation with respect to the azomethine bond and the dihedral angle between the pyridine and benzene rings is 21.90 (7)°. The azomethine bond [1.275 (2) Å] distance is very close to the formal C=N bond length, which confirms the azomethine bond formation. An extensive set of

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22

Yeung, Ying-Yeung, and Jonathan Wong. "Recent Advances in C–Br Bond Formation." Synlett 32, no. 13 (2021): 1354–64. http://dx.doi.org/10.1055/s-0037-1610772.

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AbstractOrganobromine compounds are extremely useful in organic synthesis. In this perspective, a focused discussion on some recent advancements in C–Br bond-forming reactions is presented.1 Introduction2 Selected Recent Advances2.1 Catalytic Asymmetric Bromopolycyclization of Olefinic Substrates2.2 Catalytic Asymmetric Intermolecular Bromination2.3 Some New Catalysts and Reagents for Bromination2.4 Catalytic Site-Selective Bromination of Aromatic Compounds2.5 sp3 C–H Bromination via Atom Transfer/Cross-Coupling3 Outlook

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23

Khemiri, Sabrina, Souad Brinette, Ramzi Benkraiem, and Anthony Miloudi. "Order of preference of debts under asymmetric information." Journal of Governance and Regulation 7, no. 2 (2018): 49–56. http://dx.doi.org/10.22495/jgr_v7_i2_p5.

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The purpose of this article is to investigate the debt hierarchy adopted by French companies in the context of asymmetric information. In other words, we identify the hierarchy between the three most used forms of debt that best describes the debt behaviors of French companies. The study relies on the ordered probit regression to identify the hierarchy that best describes the debt behaviors of a sample of 121 non-financial firms listed on the Euronext Paris stock exchange. Next, we perform panel-data regressions to investigate the impact of the financial crisis on debt behaviors. The empirical

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24

Dajcman, Silvo. "Asymmetric correlation of sovereign bond yield dynamics in the Eurozone." Panoeconomicus 60, no. 6 (2013): 775–89. http://dx.doi.org/10.2298/pan1306775d.

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This paper examines the symmetry of correlation of sovereign bond yield dynamics between eight Eurozone countries (Austria, Belgium, France, Germany, Ireland, Italy, Portugal, and Spain) in the period from January 3, 2000 to August 31, 2011. Asymmetry of correlation is investigated pair-wise by applying the test of Yongmiao Hong, Jun Tu, and Guofu Zhou (2007). Whereas the test of Hong, Tu, and Zhou (2007) is static, the present paper provides also a dynamic version of the test and identifies time periods when the correlation of Eurozone sovereign bond yield dynamics became asymmetric. We ident

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25

Qin, Bing-Yi, and Gui-Long Zhao. "2,3-Dihydro-1,5-benzothiazepin-4(5H)-one." Acta Crystallographica Section E Structure Reports Online 62, no. 5 (2006): o1831—o1832. http://dx.doi.org/10.1107/s1600536806012682.

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The title compound, C9H9NOS, crystallizes with two independent molecules in the asymmetric unit. The bond lengths and angles in both molecules are within normal ranges. The crystal packing is stabilized by intermolecular N—H...O hydrogen bonds and van der Waals forces.

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26

Gowda, B. Thimme, Sabine Foro, and Sharatha Kumar. "3-Acetyl-1-(2,3-dichlorophenyl)thiourea." Acta Crystallographica Section E Structure Reports Online 68, no. 8 (2012): o2353. http://dx.doi.org/10.1107/s1600536812030176.

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In the crystal structure of the title compound, C9H8Cl2N2OS, there are two molecules in the asymmetric unit which are connected by a pair of N—H...S hydrogen bonds. An intramolecular N—H...O hydrogen bond stabilizes the molecular conformation of each molecule.

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27

Novák, Martin, Cina Foroutan-Nejad, and Radek Marek. "Asymmetric bifurcated halogen bonds." Physical Chemistry Chemical Physics 17, no. 9 (2015): 6440–50. http://dx.doi.org/10.1039/c4cp05532b.

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28

Rivera, Augusto, Jicli José Rojas, Héctor Jairo Osorio, Jaime Ríos-Motta, and Michael Bolte. "Crystal structure of the 1:2 co-crystal of 1,3,6,8-tetraazatricyclo[4.3.1.13,8]undecane (TATU) and 4-chlorophenol (1/2)." Acta Crystallographica Section E Crystallographic Communications 72, no. 11 (2016): 1648–50. http://dx.doi.org/10.1107/s2056989016016546.

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In the title compound, C7H14N4·2C6H5ClO, which crystallized with two crystallographically independent 4-chlorophenol molecules and one 1,3,6,8-tetraazatricyclo[4.3.1.13,8]undecane (TATU) molecule in the asymmetric unit, the independent components are linked by two O—H...N hydrogen bonds. The hydrogen-bond acceptor sites are two non-equivalent N atoms from the aminal cage structure, and the tricyclic system distorts by changing the C—N bond lengths. In the crystal, these hydrogen-bonded aggregates are linked into chains along thecaxis by C—H...N hydrogen bonds. The crystal structure also featur

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29

Liu, Yang, Jiangtao Li, Xinyi Ye, Xiaowei Zhao, and Zhiyong Jiang. "Organocatalytic asymmetric formal arylation of benzofuran-2(3H)-ones with cooperative visible light photocatalysis." Chemical Communications 52, no. 97 (2016): 13955–58. http://dx.doi.org/10.1039/c6cc07105h.

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30

Gyamerah, Samuel Asante, Henry Ofoe Agbi-Kaiser, Clement Asare, and Nelson Dzupire. "Asymmetric Impact of Heterogenous Uncertainties on the Green Bond Market." Discrete Dynamics in Nature and Society 2024 (January 3, 2024): 1–12. http://dx.doi.org/10.1155/2024/6644658.

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Investing in green bonds has been recognized as a strategy that not only promotes environmental performance but also offers attractive investment returns. However, macroeconomic factors, such as geopolitical risk (GPR), climate policy uncertainty (CPU), and global economic policy uncertainty (GEPU), play a substantial role in shaping green bond returns. Using the returns of US green bonds as a proxy for the returns of green bonds, we argue in this paper that these heterogenous uncertainty measures might have asymmetric impacts on the returns of green bonds (GB). By employing monthly data from

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31

Stenfors, Brock A., Richard J. Staples, Shannon M. Biros, and Felix N. Ngassa. "Crystal structure of N,N-diisopropyl-4-methylbenzenesulfonamide." Acta Crystallographica Section E Crystallographic Communications 76, no. 7 (2020): 1018–21. http://dx.doi.org/10.1107/s2056989020007185.

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The synthesis of the title compound, C13H21NO2S, is reported here along with its crystal structure. This compound crystallizes with two molecules in the asymmetric unit. The sulfonamide functional group of this structure features S=O bond lengths ranging from 1.433 (3) to 1.439 (3) Å, S—C bond lengths of 1.777 (3) and 1.773 (4) Å, and S—N bond lengths of 1.622 (3) and 1.624 (3) Å. When viewing the molecules down the S—N bond, the isopropyl groups are gauche to the aromatic ring. On each molecule, two methyl hydrogen atoms of one isopropyl group are engaged in intramolecular C—H...O hydrogen bo

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32

Aftab, Hira, and A. B. M. Rabiul Alam Beg. "Does Time Varying Risk Premia Exist in the International Bond Market? An Empirical Evidence from Australian and French Bond Market." International Journal of Financial Studies 9, no. 1 (2021): 3. http://dx.doi.org/10.3390/ijfs9010003.

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The presence of risk premium is an issue that weakens the rational expectation hypothesis. This paper investigates changing behavior of time varying risk premium for holding 10 year maturity bond using a bivariate VARMA-DBEKK-AGARCH-M model. The model allows for asymmetric risk premia, causality and co-volatility spillovers jointly in the global bond markets. Empirical results show significant asymmetric partial co-volatility spillovers and risk premium exist in the bond markets. The estimates of the bivariate risk premia show bi-directional causality exist between the Australia and France Bon

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33

Zhao, Sha-Sha, Qiong Su, Zhi-Hong Peng, and De-Lie An. "2,6-Bis(4-methoxyphenyl)-1,4-dithiine." Acta Crystallographica Section E Structure Reports Online 70, no. 2 (2014): o137. http://dx.doi.org/10.1107/s1600536814000397.

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The title molecule, C18H16O2S2, reveals crystallographic twofold rotation symmetry (with both S atoms lying on the axis) and one half-molecule defines an asymmetric unit. The dithiine ring is in a boat conformation. The aromatic ring and the C=C bond are nearly coplanar, with small torsion angles of −171.26 (19) and 8.5 (3)°. The two S—C bond lengths [1.7391 (19) and 1.7795 (18) Å] are shorter than single C—S bonds and longer than analogous C=S double bonds, which indicates a certain degree of conjugation between the lone pair on the S atom and π electrons of the C=C bond. The crystal packing

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34

Reiß, Guido J., and Michaela K. Meyer. "Synthesis and Structural Characterization of Diisopropylammonium Trifluoroacetate and Diisoproplyammonium Pentafluoropropionate." Zeitschrift für Naturforschung B 65, no. 4 (2010): 479–84. http://dx.doi.org/10.1515/znb-2010-0407.

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Diisopropylammonium trifluoroacetate ({[iPr2NH2][CF3COO]}; dip tfa; 1) and diisopropylammonium pentafluoropropionate ({[iPr2NH2][C2F5COO]}; dip pfp; 2) have been synthesized and structurally characterized by X-ray diffraction and spectroscopic methods. Both compounds form hydrogen-bonded cyclic dimers (Etter symbol: R44 (12)) in the solid state. The asymmetric unit of 1 contains one trifluoroacetate anion and one dip cation in the centrosymmetric space group Pī. The asymmetric unit of 2 consists of two crystallographically independent pentafluoropropionate anions and two independent dip cation

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35

Hall, Mélanie. "Enzymatic strategies for asymmetric synthesis." RSC Chemical Biology 2, no. 4 (2021): 958–89. http://dx.doi.org/10.1039/d1cb00080b.

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36

Matsunaga, D., Y. Imai, C. Wagner, and T. Ishikawa. "Reorientation of a single red blood cell during sedimentation." Journal of Fluid Mechanics 806 (September 29, 2016): 102–28. http://dx.doi.org/10.1017/jfm.2016.601.

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The reorientation phenomenon of a single red blood cell during sedimentation is simulated using the boundary element method. The cell settles downwards due to a density difference between the internal and external fluids, and it changes orientation toward a vertical orientation regardless of Bond number or viscosity ratio. The reorientation phenomenon is explained by a shape asymmetry caused by the gravitational driving force, and the shape asymmetry increases almost linearly with the Bond number. When velocities are normalised by the driving force, settling/drifting velocities are weak functi

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37

Gao, Bo. "Ethyl (E)-2-(4-chlorobenzylidene)hydrazinecarboxylate." Acta Crystallographica Section E Structure Reports Online 63, no. 11 (2007): o4418. http://dx.doi.org/10.1107/s1600536807051410.

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The title compound, C10H11ClN2O2, crystallizes with two independent, but essentially identical molecules in the asymmetric unit. Each planar molecule is in the E configuration about the C=N bond. Intermolecular N—H...O hydrogen bonds link molecules into a one-dimensional chain aligned along the [101] direction.

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38

Kobrsi, Issam. "Aluminum Dimer Containing Bulky 1,2,3-Triazolate Ligand." Journal of Chemistry 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/619196.

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The first molecular aluminum 1,2,3-triazolato complex was synthesized bearing a bulky 1,2,3-triazolate ligand. Oligomers and polymers were avoided due to the bulkiness and noncoordinating nature of the substituents. The novel Al2N4ring formed contains symmetrical Al-N bond distances unexpectedly having asymmetric Al-N-N angles of 144.55(15)° and 115.83(14)°. This asymmetry demonstrates the effect of the steric hindrance of the ligand.

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39

Sharma, Pratibha, Raakhi Gupta, and Raj Kumar Bansal. "Recent advances in organocatalytic asymmetric aza-Michael reactions of amines and amides." Beilstein Journal of Organic Chemistry 17 (October 18, 2021): 2585–610. http://dx.doi.org/10.3762/bjoc.17.173.

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Nitrogen-containing scaffolds are ubiquitous in nature and constitute an important class of building blocks in organic synthesis. The asymmetric aza-Michael reaction (aza-MR) alone or in tandem with other organic reaction(s) is an important synthetic tool to form new C–N bond(s) leading to developing new libraries of diverse types of bioactive nitrogen compounds. The synthesis and application of a variety of organocatalysts for accomplishing highly useful organic syntheses without causing environmental pollution in compliance with ‘Green Chemistry” has been a landmark development in the recent

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40

Pınar, Şerife, Mehmet Akkurt, Ali Asghar Jarrahpour, Shadab Rezaei, and Orhan Büyükgüngör. "Bis{4-[2-(2-hydroxyphenyl)ethyleneamino]phenyl} ether." Acta Crystallographica Section E Structure Reports Online 62, no. 5 (2006): o2056—o2058. http://dx.doi.org/10.1107/s1600536806014577.

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In the title compound, C28H24N2O3, the two molecules in the asymmetric unit have different conformations about the ether bonds. The bond lengths and angles of the two molecules are nearly identical. The crystal structure is stabilized by intramolecular O—H...N and intermolecular C—H...O hydrogen bonding.

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41

Remete, Attila M., Melinda Nonn, Jorge Escorihuela, Santos Fustero, and Loránd Kiss. "Asymmetric Methods for Carbon‐Fluorine Bond Formation." European Journal of Organic Chemistry 2021, no. 44 (2021): 5946–74. http://dx.doi.org/10.1002/ejoc.202101094.

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42

Poulsen, Thomas B., Mark Bell, and Karl Anker Jørgensen. "Organocatalytic asymmetric allylic carbon–carbon bond formation." Org. Biomol. Chem. 4, no. 1 (2006): 63–70. http://dx.doi.org/10.1039/b514564c.

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43

Johnson, D. "Oxynitrilases for asymmetric C–C bond formation." Current Opinion in Chemical Biology 4, no. 1 (2000): 103–9. http://dx.doi.org/10.1016/s1367-5931(99)00059-9.

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44

Kawajiri, Yoshiki, and Noboru Motohashi. "Strong asymmetric induction without covalent bond connection." Journal of the Chemical Society, Chemical Communications, no. 18 (1989): 1336. http://dx.doi.org/10.1039/c39890001336.

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45

Taylor, Mark S., and Eric N. Jacobsen. "Asymmetric Catalysis by Chiral Hydrogen-Bond Donors." Angewandte Chemie International Edition 45, no. 10 (2006): 1520–43. http://dx.doi.org/10.1002/anie.200503132.

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46

Begum, M. S., M. B. H. Howlader, M. C. Sheikh, R. Miyatake, and E. Zangrando. "Crystal structure ofS-hexyl (E)-3-(2-hydroxybenzylidene)dithiocarbazate." Acta Crystallographica Section E Crystallographic Communications 72, no. 3 (2016): 290–92. http://dx.doi.org/10.1107/s2056989016001857.

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The title compound, C14H20N2OS2[systematic name:S-hexyl (E)-2-(2-hydroxybenzylidene)hydrazine-1-carbodithioate], crystallizes with four independent molecules (A–D) in the asymmetric unit. All four molecules adopt anEconformation with respect to the C=N bond of the benzylidene moiety and have an intramolecular O—H...N hydrogen bond generating anS(6) ring motif. In the crystal, theAandDmolecules are connected by a pair N—H...S hydrogen bonds, forming a dimer with anR22(8) ring motif. In the case of moleculesBandC, they are linked to themselves by pairs of N—H...S hydrogen bonds, formingB–BandC–C

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47

Ma, Xiaoli, Shuai Sun, Pengfei Hao, Ying Yang, and Zhi Yang. "N-(2,6-Diisopropylphenyl)-N-{3-[(2,6-diisopropylphenyl)imino]butan-2-yl}azanide trichloridostannate(II)." Acta Crystallographica Section E Structure Reports Online 68, no. 6 (2012): m719—m720. http://dx.doi.org/10.1107/s1600536812014729.

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In the title compound, (C28H43N2)[SnCl3], two pairs of molecular species are present in the asymmetric unit. The employed α-diimine opens up, forming a highly asymmetric ammonium that has its protons at one of the N atoms [N—C= 1.264 (4) and 1.516 (4) Å]. One of the C=N double bonds was oxidized to C—N, which is consistent with the bond length of 1.516 (4) Å. Meanwhile SnIV was reduced to SnII. The (SnCl)3 − anion is trigonal–pyramidal. In the crystal, molecules are linked by C—H...Cl, N—H...Cl, N—H...N and C—H...N bonds. The crystal studied was twinned by pseudo-merohedry.

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48

Yao-Jen Hsu, Yao-Jen Hsu, and Yeong-Jia Goo Yao-Jen Hsu. "The enigma of volatility: Exploring asymmetric threshold effects in U.S. bond futures prices during yield curve inversions." 企業管理學報 49, no. 4 (2024): 023–51. https://doi.org/10.53106/102596272024120494002.

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<p>In contrast to the majority of literature that focuses on financial product volatility during financial crises, this paper stands as the first study delving into the asymmetric threshold effects on the volatility of intermediate-term and long-term U.S. Treasury bond futures prices during the inverted yield curve period. We present compelling evidence confirming the presence of both TAR (Threshold AutoRegressive) and MTAR (Momentum Threshold AutoRegressive) effects within the sample period. Using a synchronous grid search algorithm, we simultaneously searched for the optimal threshold

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49

Borowiak, Teresa, Grzegorz Dutkiewicz, and Jacek Thiel. "The Hydrogen Bond Networks in Nicinquinium Salts." Zeitschrift für Naturforschung B 55, no. 11 (2000): 1020–24. http://dx.doi.org/10.1515/znb-2000-1106.

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Abstract Crystals of nicinquinium chloride and bromide incorporate water molecules due to the im balance of hydrogen bond donors and acceptors. The resulting intermolecular hydrogen bond system indicates a better proton accepting ability of chloride ions than bromide ions. The chlo ride anions accept four hydrogen bonds in an almost tetrahedral arrangement whereas only two are formed with the bromide anions. As a consequence in the crystal structure of the chloride a three dimensional network of hydrogen bonds is formed, while in that of the bromide only chains of hydrogen bonded species exi

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Loughzail, Mohamed, Abdesselam Baouid, José A. Fernandes, Mohamed Driss, and El Hassane Soumhi. "(E)-3-[(Dimethylamino)methylidene]-4-phenyl-1H-1,5-benzodiazepin-2(3H)-one." Acta Crystallographica Section E Structure Reports Online 70, no. 2 (2014): o126. http://dx.doi.org/10.1107/s1600536813034739.

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The asymmetric unit of the title compound, C18H17N3O, consists of two independent molecules, each having anEconformation with respect to the C=C bond between the benzodiazepinone and dimethylamine groups. In the crystal, the two independent molecules are linked into a dimer by a pair of N—H...O hydrogen bonds.

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