Journal articles: 'Hapticité'

1

Pallasmaa, Juhani. "Hapticity Vision." Architectural Design 75, no. 4 (July 2005): 137–38. http://dx.doi.org/10.1002/ad.119.

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Cannella, Anthony F., Suman Kr Dey, Samantha N. MacMillan, and David C. Lacy. "Structural diversity in pyridine and polypyridine adducts of ring slipped manganocene: correlating ligand steric bulk with quantified deviation from ideal hapticity." Dalton Transactions 47, no. 15 (2018): 5171–80. http://dx.doi.org/10.1039/c8dt00537k.

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Horak, Kyle T., Alexandra Velian, Michael W. Day, and Theodor Agapie. "Arene non-innocence in dinuclear complexes of Fe, Co, and Ni supported by a para-terphenyl diphosphine." Chem. Commun. 50, no. 34 (2014): 4427–29. http://dx.doi.org/10.1039/c4cc00838c.

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Fetisov, Evgenii O., Igor P. Gloriozov, Denis A. Kissounko, Mikhail S. Nechaev, Samia Kahlal, Jean-Yves Saillard, and Yuri F. Oprunenko. "DFT study of dihydrogen addition to molybdenum π-heteroaromatic complexes: a prerequisite step for the catalytic hydrodenitrogenation process." New Journal of Chemistry 39, no. 11 (2015): 8915–21. http://dx.doi.org/10.1039/c5nj01585e.

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Giese, Michael, Markus Albrecht, Arto Valkonen, and Kari Rissanen. "The pentafluorophenyl group as π-acceptor for anions: a case study." Chemical Science 6, no. 1 (2015): 354–59. http://dx.doi.org/10.1039/c4sc02762k.

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A unique structural study investigates the variability of anion–π bonding in the solid state structures of pentafluorophenyl arenes. The hapticity concept is used as tool to describe the structural differences of various anion–π complexes.

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Mebs, Stefan, Maren A. Chilleck, Simon Grabowsky, and Thomas Braun. "Hapticity Uncovered: Real-Space Bonding Indicators for Zincocene Chemistry." Chemistry - A European Journal 18, no. 37 (August 14, 2012): 11647–61. http://dx.doi.org/10.1002/chem.201200870.

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Day, Benjamin M., and Martyn P. Coles. "Assigning Hapticity to Cyclopentadienyl Derivatives of Antimony and Bismuth." Organometallics 32, no. 15 (August 2013): 4270–78. http://dx.doi.org/10.1021/om400434f.

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8

Blacquiere, Johanna M., Carolyn S. Higman, Robert McDonald, and Deryn E. Fogg. "A Reactive Ru–Binaphtholate Building Block with Self-Tuning Hapticity." Journal of the American Chemical Society 133, no. 35 (September 7, 2011): 14054–62. http://dx.doi.org/10.1021/ja204767a.

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9

Wang, Hongyan, Zhonghua Sun, Yaoming Xie, R. Bruce King, and Henry F. Schaefer. "Unsaturation and Variable Hapticity in Binuclear Azulene Iron Carbonyl Complexes." Organometallics 29, no. 3 (February 8, 2010): 630–41. http://dx.doi.org/10.1021/om9009284.

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Sun, Zhonghua, Hongyan Wang, Yaoming Xie, R. Bruce King, and Henry F. Schaefer III. "Unsaturation and variable hapticity in binuclear azulene manganese carbonyl complexes." Dalton Transactions 39, no. 44 (2010): 10702. http://dx.doi.org/10.1039/c0dt00807a.

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11

Askarinejad, Azadeh, Ali Asgar Torabi, and Ali Morsali. "Thallium(I) Salicylate and Phthalate: Syntheses and Structural Characterization." Zeitschrift für Naturforschung B 61, no. 5 (May 1, 2006): 565–69. http://dx.doi.org/10.1515/znb-2006-0510.

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Two new 2D polymers, thallium(I) hydrogensalicylate (1) and hydrogenphthalate (2), have been synthesized and characterized by elemental analysis, IR, 1H NMR and 13C NMR spectroscopy. The single-crystal X-ray data show the coordination number of the TlI ions of compounds 1 and 2 to be four and six with the environment TlO4 and TlO6, respectively. The arrangement of the O atoms suggests a gap in the coordination geometry around the thallium atoms in both compounds, due to a stereo-chemically ‘active’ electron lone pair of TlI. There is another interaction between the thallium atom and the carbon atoms of an aromatic ring in compound 1, giving a total hapticity of ten with the environment C6O4Tl.

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Mrózek, Ondřej, Jaromír Vinklárek, Zdeňka Růžičková, and Jan Honzíček. "Indenyl Compounds with Constrained Hapticity: The Effect of Strong Intramolecular Coordination." European Journal of Inorganic Chemistry 2016, no. 33 (October 19, 2016): 5250–64. http://dx.doi.org/10.1002/ejic.201601029.

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13

Glöckner, Andreas, Peng Cui, Yaofeng Chen, Constantin G. Daniliuc, Peter G. Jones, and Matthias Tamm. "Boratatrozircenes: cycloheptatrienyl zirconium boratabenzene sandwich complexes – evaluation of potential η6–η5 hapticity interconversions." New Journal of Chemistry 36, no. 6 (2012): 1392. http://dx.doi.org/10.1039/c2nj40059f.

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14

Jochmann, Phillip, Thomas P. Spaniol, Stephen C. Chmely, Timothy P. Hanusa, and Jun Okuda. "Preparation, Structure, and Ether Cleavage of a Mixed Hapticity Allyl Compound of Calcium." Organometallics 30, no. 19 (October 10, 2011): 5291–96. http://dx.doi.org/10.1021/om200749f.

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15

Mebs, Stefan, Sabrina Imke Kalläne, and Thomas Braun. "Hapticity of asymmetric rhodium-allyl compounds in the light of real-space bonding indicators." Zeitschrift für Kristallographie - Crystalline Materials 233, no. 9-10 (September 25, 2018): 615–26. http://dx.doi.org/10.1515/zkri-2017-2141.

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Abstract Rhodium boryl complexes are valuable catalysts for hydro- or diboration reactions of alkenes, but can also react with ketones (R2C=O) and imines (R2C=NR′) giving rise to insertion products having formally Rh–R2C–O/NR′–B linkages. The resulting molecular structures, however, may show complex metal–ligand and ligand–ligand interaction patterns with often unclear metal–ligand connectivities (hapticities, ηn). In order to assign the correct hapticity in a set of asymmetric rhodium-allyl compounds with molecular structures indicating η1−5 bonding, a comprehensive DFT study was conducted. The study comprises determination of a variety of real-space bonding indicators derived from computed electron and pair densities according to the AIM, ELI-D, NCI, and DORI topological and surface approaches, which uncover the metal–ligand connectivties and suggest an asymmetric ligand–metal donation/metal–ligand back-donation framework according to the Dewar–Chatt–Duncanson model.

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16

Piattoni, Simona. "The European Union between Intergovernmentalism and ‘Shared and Responsible Sovereignty’: The Haptic Potential of EMU’s Institutional Architecture (The Government and Opposition/Leonard Schapiro Lecture, 2016)." Government and Opposition 52, no. 3 (December 28, 2016): 385–411. http://dx.doi.org/10.1017/gov.2016.48.

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The article starts from a critique of the widespread assumption that intergovernmentalism is not only the more practical but also the more democratic way of handling the current European crises – and particularly the euro crisis – to argue for the need to rethink the working and the definition of democracy in the current heightened interconnectedness of political organization. It suggests that perceiving European citizens as being separated into distinct state communities stands in the way of a full appreciation of the externalities, hence of the reciprocal responsibilities, that they owe each other and turns apparently democratic decisions into potential acts of domination, as theorized by both Pettit (1997) and Bohman (2006). It suggests that we should embrace a more encompassing and dialogical notion of democracy which translates Pallasmaa’s (2012) notion of hapticity from the field of physical architecture to that of institutional architecture. It concludes by suggesting that there are already institutional architectures in the EU which lend themselves to a haptic declension, for example the European Semester.

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17

Veiros, Luis F. "Tuning Indenyl Hapticity in Zirconium Bis(indenyl) Complexes with the Nature of Complementary Ligands." Organometallics 25, no. 19 (September 2006): 4698–701. http://dx.doi.org/10.1021/om060602c.

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18

Romão, Carlos C., and Luis F. Veiros. "Haptotropic Shifts and Fluxionality of Cyclopentadienyl in Mixed-Hapticity Complexes: A DFT Mechanistic Study." Organometallics 26, no. 7 (March 2007): 1777–81. http://dx.doi.org/10.1021/om061190a.

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19

Georg, Andreas, and Cornelius G. Kreiter. "Facile Hapticity Changes in (1-Hydronaphthalene)manganese Complexes, Ligand Addition and Photochemical Ligand Cleavage." European Journal of Inorganic Chemistry 1999, no. 4 (April 1999): 651–54. http://dx.doi.org/10.1002/(sici)1099-0682(199904)1999:4<651::aid-ejic651>3.0.co;2-d.

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20

Falceto, Andrés, Ernesto Carmona, and Santiago Alvarez. "Electronic and Structural Effects of Low-Hapticity Coordination of Arene Rings to Transition Metals." Organometallics 33, no. 22 (October 29, 2014): 6660–68. http://dx.doi.org/10.1021/om5009583.

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21

Paulo, António, Ângela Domingos, and Isabel Santos. "Control of the hapticity of pyridine-2-thiolate ligands in rhenium(V) oxo complexes †." Journal of the Chemical Society, Dalton Transactions, no. 21 (1999): 3735–40. http://dx.doi.org/10.1039/a905911c.

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22

Feng, Hao, Hongyan Wang, Yaoming Xie, R. Bruce King, and Henry F. Schaefer. "Variable hapticity of the cyclooctatetraene ring in sandwich compounds of the first row transition metals." Journal of Organometallic Chemistry 695, no. 22 (October 2010): 2461–68. http://dx.doi.org/10.1016/j.jorganchem.2010.07.003.

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23

Northcutt, Todd O., Rene J. Lachicotte, and William D. Jones. "11B NMR: A New Tool for the Determination of Hapticity of Tris(pyrazolyl)borate Ligands." Organometallics 17, no. 23 (November 1998): 5148–52. http://dx.doi.org/10.1021/om9805685.

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24

Wang, Hongyan, Yaoming Xie, R. Bruce King, and Henry F. Schaefer. "Bis(cycloheptatrienyl) Derivatives of the First-Row Transition Metals: Variable Hapticity of the Cycloheptatrienyl Ring." European Journal of Inorganic Chemistry 2008, no. 23 (August 2008): 3698–708. http://dx.doi.org/10.1002/ejic.200800299.

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25

Müller, Ulrike, Anna Isaeva, Janine Richter, Maximilian Knies, and Michael Ruck. "Polyhedral Bismuth Polycations Coordinating Gold(I) with Varied Hapticity in a Homoleptic Heavy-Metal Cluster." European Journal of Inorganic Chemistry 2016, no. 22 (July 8, 2016): 3580–84. http://dx.doi.org/10.1002/ejic.201600637.

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26

Wang, Hui, Qiyang Wu, Hongyan Wang, and R. Bruce King. "The hapticity of the acenaphthylene ligand in its mononuclear, binuclear, and trinuclear iron carbonyl complexes." New Journal of Chemistry 40, no. 10 (2016): 8760–67. http://dx.doi.org/10.1039/c6nj01741j.

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The structures and energetics of the acenaphthylene iron carbonyl complexes (C₁₂H₈)Fe(CO)_n (n = 4, 3, 2), (C₁₂H₈)Fe₂(CO)_n (n = 8, 7, 6, 5, 4), and (C₁₂H₈)Fe₃(CO)_n (n = 9, 8) have been examined using density functional theory.

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27

Glöckner, Andreas, Òscar Àrias, Thomas Bannenberg, Constantin G. Daniliuc, Peter G. Jones, and Matthias Tamm. "Facile η5–η3 hapticity interconversion in pentamethylcyclopentadienyl ruthenium(ii) complexes containing a phenylmethallyl (“open indenyl”) ligand." Dalton Transactions 40, no. 43 (2011): 11511. http://dx.doi.org/10.1039/c1dt11436k.

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28

Wang, Hongyan, Xiaohong Chen, Yaoming Xie, R. Bruce King, and Henry F. Schaefer. "Mixed Sandwich Compounds C5H5MC8H8of the First-Row Transition Metals: Variable Hapticity of the Eight-Membered Ring." Organometallics 29, no. 8 (April 26, 2010): 1934–41. http://dx.doi.org/10.1021/om901113y.

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29

Ireland, Benjamin J., Robert McDonald, and Deryn E. Fogg. "Exploring the Variable Hapticity of the Arylamide Ligand: Access to σ-Amidophenyl and π-Cyclohexadienylimine Structures." Organometallics 32, no. 17 (August 19, 2013): 4723–25. http://dx.doi.org/10.1021/om4005252.

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30

Wang, Hui, Hongyan Wang, Dong Die, and R. Bruce King. "The hapticity of octafluorocyclooctatetraene in its first-row mononuclear transition metal carbonyl complexes: effect of perfluorination." Transition Metal Chemistry 39, no. 1 (November 8, 2013): 95–109. http://dx.doi.org/10.1007/s11243-013-9778-5.

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31

Campt, Tina M. "The Visual Frequency of Black Life." Social Text 37, no. 3 (September 1, 2019): 25–46. http://dx.doi.org/10.1215/01642472-758503.

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How do we engage a contemporary visual archive of blackness that is saturated by the proliferation and mass circulation of images of violence, antiblackness, and premature death? This article explores the labor required by visual enactments of black precarity in the work of filmmaker and cinematographer Arthur Jafa. The labor of black precarity—specifically, the work required to cultivate, maintain, or articulate our relationship to black precarity—is the effort required to position oneself in proximity to, or in a place of discomfort and, for some, potential complicity with, black precarity. The article stages an encounter with the affective registers of refusal enacted in a genre of black visuality defined as still-moving-images. Still-moving-images hover between still and moving images and require the affective labor of feeling with or through them. The article concludes by expanding the discussion of Jafa’s still-moving-images into a broader enunciation of the author’s theory of hapticity, a term that articulates the labor of feeling across difference and suffering as an effortful practice of exertion and struggle to remain in relation to or in contact or connection with another.

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Moreno-Alcántar, Guillermo, Cristian Díaz-Rosas, Alberto Fernández-Alarcón, Luis Turcio-García, Marcos Flores-Álamo, Tomás Rocha-Rinza, and Hugo Torrens. "Fluorination Effects in XPhos Gold(I) Fluorothiolates." Inorganics 9, no. 2 (February 2, 2021): 14. http://dx.doi.org/10.3390/inorganics9020014.

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Gold phosphine derivatives such as thiolates have been recently proposed as catalysts or catalyst precursors. The relevance of the supramolecular environment on the fine-tuning of the catalytical activity on these compounds incentivizes the use of tools that are convenient to characterize in detail the non-covalent landscape of the systems. Herein, we show the molecular and supramolecular diversity caused by the changes in the fluorination pattern in a family of new XPhos goldfluorothiolate derivatives. Furthermore, we studied the supramolecular interactions around the Au centers using quantum chemical topology tools, in particular the quantum theory of atoms in molecules (QTAIM) and the non-covalent interaction index. Our results give detailed insights into the fluorination effects on the strength of intramolecular and intermolecular interactions in these systems. We have also used QTAIM delocalization indexes to define a novel hapticity indicator. Finally, we assessed the trans influence of the fluorothiolates on the phosphine in terms of the change in the δ 31P-NMR. These results show the feasibility of the use of fluorination in the modulation of the electronic properties of Buchwald phosphine gold(I) compounds, and thereby its potential catalytic activity.

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33

Venzo, Alfonso, Annalisa Bisello, Alberto Ceccon, Francesco Manoli, and Saverio Santi. "Low hapticity intermediates in the carbonylation of (η5-2,6-dimethyl-5-hydro-s-indacenide)-Ir(η4-COD)." Inorganic Chemistry Communications 3, no. 1 (January 2000): 1–4. http://dx.doi.org/10.1016/s1387-7003(99)00167-7.

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34

Wang, Hongyan, Yaoming Xie, Ioan Silaghi-Dumitrescu†, R. Bruce King, and Henry F. Schaefer. "The mixed sandwich compounds C5H5MC7H7of the first row transition metals: variable hapticity of the seven-membered ring." Molecular Physics 108, no. 7-9 (April 10, 2010): 883–94. http://dx.doi.org/10.1080/00268970903530807.

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35

Inagaki, Akiko, Yoshiaki Takaya, Toshifumi Takemori, Hiroharu Suzuki, Masako Tanaka, and Masa-aki Haga. "Trinuclear Ruthenium Complex with a Face-Capping Benzene Ligand. Hapticity Change Induced by Two-Electron Redox Reaction." Journal of the American Chemical Society 119, no. 3 (January 1997): 625–26. http://dx.doi.org/10.1021/ja963338v.

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36

Pettinari, Riccardo, Claudio Pettinari, Fabio Marchetti, Roberto Gobetto, Carlo Nervi, Michele R. Chierotti, Eric J. Chan, Brian W. Skelton, and Allan H. White. "Solid-State15N CPMAS NMR and Computational Analysis of Ligand Hapticity in Rhodium(η-diene) Poly(pyrazolyl)borate Complexes." Inorganic Chemistry 49, no. 23 (December 6, 2010): 11205–15. http://dx.doi.org/10.1021/ic101830e.

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37

Wang, Hongyan, Quan Du, Yaoming Xie, R. Bruce King, and Henry F. Schaefer. "The hapticity of cyclooctatetraene in its first row mononuclear transition metal carbonyl complexes: Several examples of octahapto coordination." Journal of Organometallic Chemistry 695, no. 2 (January 2010): 215–25. http://dx.doi.org/10.1016/j.jorganchem.2009.10.008.

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38

Feng, Xuejun, Chanyuan Xie, Yaoming Xie, R. Bruce King, and Henry F Schaefer. "Heptahapticity in Binuclear (Cycloheptatrienyl)molybdenum Carbonyl Derivatives: The Interplay between Ring Hapticity/Planarity and Metal-Metal Multiple Bonding." Chemistry - An Asian Journal 5, no. 5 (April 12, 2010): 1192–201. http://dx.doi.org/10.1002/asia.200900363.

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39

Guo, Shengli, Ralf Hauptmann, and Jörg J. Schneider. "Fluorenone and Fluorene Complexes with a Slipped Triple Decker Structure DisplayingVariable Hapticity of ((Pentaalkyl)cyclopentadienyl)cobalt(I) Fragments." Zeitschrift für anorganische und allgemeine Chemie 633, no. 13-14 (October 2007): 2332–37. http://dx.doi.org/10.1002/zaac.200700218.

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40

Viebrock, Heiko, Dirk Abein, and Erwin Weiss. "Über Metallalkyl- und -arylverbindungen, 51. Mittlg.* Unsymmetrische Diorganomagnesiumverbindungen. MgRR'(L) und solvensgetrennte Ionenpaare mit R = Me, Et, R' = Cyclopentadienyl, Indenyl, Fluorenyl, Phenylethinyl, L = Tetramethylethylendiamin, Pentamethyldiethylentriamin / On Metal Alkyl and Aryl Compounds, Part 51 Unsymmetrical Diorganomagnesium Compounds. MgRR'(L) and Solvens Separated Ion Pairs with R = Me, Et, R' = Cyclopentadienyl, Indenyl, Fluorenyl, Phenylethynyl, L = Tetramethylethylenediamine, Pentamethyldiethylenetriamine." Zeitschrift für Naturforschung B 49, no. 1 (January 1, 1994): 89–99. http://dx.doi.org/10.1515/znb-1994-0116.

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Abstract Amine adducts of diorganomagnesium compounds MgR2(L) are soluble in hydrocarbons and therefore valuable synthons for reactions in non-polar solvents. In this way unsymmetrically substituted derivatives MgRR'(L) become available by substituting one organic group by a different carbanion via acid-base reactions, according to eq. (1): R2Mg(L) + HR' -> RR'Mg(L) + HR (1) with HR' being stronger CH-acids than HR. Using the amin adducts R2Mg(L) (R = Me, Et) with chelating amines (L = tetramethyl ethylenediamine, TMEDA, pentamethylethylenetriamine, PMDTA) and the strong CH-acids cyclopentadiene, indene, fluorene and alkynes the following compounds have been synthesized and their structures derived by X-ray analyses: MgMe(η3-cyclopentadienyl)(tmeda) (1), MgMe(η3-indenyl)(tmeda) (2), MgMe(η1-fluorenyl)(tmeda) (3), [Mg2Me2(pmdta)2]2+[fluorenyl]−2benzene (4) and [Mg2Et(phenylethynyl)3(tmeda)]2 ∙ benzene (5). It is remarkable, that cyclopentadienyl, indenyl, and fluorenyl ligands have a lower hapticity than η5 to the metal, due to steric repulsion by the other ligands. In 4 the bulky tridentate base PMDTA prevents any direct interaction between the fluorenide anion and magnesium, giving solvens separated ion pairs with the unusual and hitherto rare example of an organomagnesium cation [Mg2Me2(pmdt)2]2+. The 1:3 compound 5 has a more complicated structure, related to that of alkali metal alkynyl magnesates.

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41

Canovese, L., F. Visentin, C. Santo, G. Chessa, and V. Bertolasi. "Allyl Amination of Phosphinoquinoline Allyl Complexes of Palladium. Influence of the Allyl Hapticity on the Reaction Rate and Regiochemistry." Organometallics 29, no. 13 (July 12, 2010): 3027–38. http://dx.doi.org/10.1021/om100315d.

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42

Li, Zhihai, Manuel Smeu, Tae-Hong Park, Jeff Rawson, Yangjun Xing, Michael J. Therien, Mark A. Ratner, and Eric Borguet. "Hapticity-Dependent Charge Transport through Carbodithioate-Terminated [5,15-Bis(phenylethynyl)porphinato]zinc(II) Complexes in Metal–Molecule–Metal Junctions." Nano Letters 14, no. 10 (September 25, 2014): 5493–99. http://dx.doi.org/10.1021/nl502466a.

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43

Garrot, Jean-Michel, Christine Lepetit, and Michel Che. "Comparison of extended-Hückel and ab initio calculations in predicting the hapticity of benzene in silica-supported NiI complexes." Journal of Molecular Catalysis A: Chemical 107, no. 1-3 (May 1996): 137–43. http://dx.doi.org/10.1016/1381-1169(95)00169-7.

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44

Bowyer, Walter J., and William E. Geiger. "Structural consequences of electron-transfer reactions. 11. Electrochemically induced changes in hapticity in mixed-sandwich compounds of iridium and rhodium." Journal of the American Chemical Society 107, no. 20 (October 1985): 5657–63. http://dx.doi.org/10.1021/ja00306a011.

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45

Cohen, Revital, Eric Weitz, Jan M. L. Martin, and Mark A. Ratner. "Arene Hapticity in (C6H6)Cr(CO)n(n= 1−5) Complexes: A DFT Study of Singlet and Triplet Energy Surfaces." Organometallics 23, no. 10 (May 2004): 2315–25. http://dx.doi.org/10.1021/om034367z.

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46

Lord, Richard L., Cynthia K. Schauer, Franklin A. Schultz, and Mu-Hyun Baik. "Ring-Slippage and Multielectron Redox Properties of Fe/Ru/Os–Bis(arene) Complexes: Does Hapticity Change Really Cause Potential Inversion?" Journal of the American Chemical Society 133, no. 45 (November 16, 2011): 18234–42. http://dx.doi.org/10.1021/ja205169c.

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47

Dryden, N. H., P. Legzdins, S. F. Sayers, J. Trotter, and V. C. Yee. "Synthesis, characterization, and properties of [Cp*M(NO)(η2-CH2Ph)-(NCMe)]BF4 salts (M = Mo, W) and related complexes: the stabilizing influence of benzyl ligands." Canadian Journal of Chemistry 73, no. 7 (July 1, 1995): 1035–43. http://dx.doi.org/10.1139/v95-128.

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Treatment of orange solutions of Cp*M(NO)(η2-CH2Ph)Cl (M = Mo or W) with an equimolar amount of solid AgBF4 in MeCN affords the salts [Cp*M(NO)(η2-CH2Ph)(NCMe)]BF4 as analytically pure crystals in good yields. Both orange complexes have been subjected to single-crystal X-ray crystallographic analyses in order to establish their molecular geometries and their intramolecular metrical parameters. Both salts consist of discrete organometallic cations and tetrahedral BF4− anions, the intramolecular dimensions of the two cationic complexes being essentially the same and resembling those found for related Cp*M(NO)-containing compounds. The isolated [Cp*M(NO)(η2-CH2Ph)(NCMe)]+ cations are quite electrophilic, being able to abstract Cl− from a NaCl IR cell to revert to their chloro precursors. However, treatment of the [Cp*W(NO)(η2-CH2Ph)(NCMe)]BF4 salt with various unsaturated substrates (e.g., diphenylacetylene, 2,3-dimethyl-1,3-butadiene, carbon monoxide, and acetone) in CDCl3 results in no detectable chemical reaction. Lewis bases weaker than Cl− evidently cannot displace the acetonitrile ligand from the coordination sphere of the metal or induce the benzyl ligand to diminish its hapticity. Such a diminution does occur for the CH2Ph ligand when the MeCN group in the cationic complexes is replaced by a carboxylate anion to produce neutral Cp′M(NO)(η1-CH2Ph)(η2-O2CR) complexes. The latter complexes are obtainable by treatment of Cp*M(NO)(η2-CH2Ph)Cl with AgO2CR (R = CH(Et)(Ph)) in CH2Cl2 and have been fully characterized by conventional spectroscopic methods. Keywords: organomolybdenum, organotungsten, benzyl, cations.

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48

Stoll, Michael E., Paola Belanzoni, Maria J. Calhorda, Michael G. B. Drew, Vitor Félix, William E. Geiger, Carla A. Gamelas, Isabel S. Gonçalves, Carlos C. Romão, and Luís F. Veiros. "Stepwise Hapticity Changes in Sequential One-Electron Redox Reactions of Indenyl-Molybdenum Complexes: Combined Electrochemical, ESR, X-ray, and Theoretical Studies." Journal of the American Chemical Society 123, no. 43 (October 2001): 10595–606. http://dx.doi.org/10.1021/ja0109951.

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Li, Huidong, Hao Feng, Weiguo Sun, Yaoming Xie, R. Bruce King, and Henry F. Schaefer III. "Mononuclear bis(pentalene) sandwich compounds of the first-row transition metals: variable hapticity of the pentalene rings and intramolecular coupling reactions." New Journal of Chemistry 35, no. 8 (2011): 1718. http://dx.doi.org/10.1039/c1nj20144a.

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Pritchett, Suzy, Peter Gantzel, and Patrick J. Walsh. "Synthesis and Crystal Structures of Chiral Titanium Bis(sulfonamido) Bis(amide) Complexes: Differences in Ligand Hapticity Caused by Crystal Packing Forces." Organometallics 16, no. 24 (November 1997): 5130–32. http://dx.doi.org/10.1021/om970695l.

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Journal articles on the topic 'Hapticité'

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