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Journal articles on the topic 'Bispidine ligands'

Author: Grafiati

Published: 4 June 2021

Last updated: 14 February 2022

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1

Walther, Martin, Madlen Matterna, Stefanie Juran, Silke Fähnemann, Holger Stephan, Werner Kraus, and Franziska Emmerling. "Imidazole-containing Bispidine Ligands: Synthesis, Structure and Cu(II) Complexation." Zeitschrift für Naturforschung B 66, no. 7 (July 1, 2011): 721–28. http://dx.doi.org/10.1515/znb-2011-0713.

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The preparation and characterization of tris-pyridyl bispidine (3,7-diazabicyclo[3.3.1]nonane) derivatives with benzimidazole and imidazole donor groups at the N-3 position of the bispidine skeleton and their copper(II) complexes are reported. The impact of the hetaryl substituents on the configurational isomerism of piperidones and their corresponding bispidones has been studied by NMR spectroscopy, revealing the exclusive appearance in the enol form for the piperidones in solution and the trans-configuration regarding the two pyridyl substituents, as well as the sole formation of the unsymmetric exo-endo isomers for the corresponding bispidones. Thus, the bispidones are preorganized ligands for building pentacoordinated complexes, confirmed by the preparation and characterization of the corresponding Cu(II) complexes. Of the di-pyridyl piperidones with benzimidazole and imidazole substituents, and of the Cu(II) complex of the benzimidazole-containing bispidone, crystals have become available for the analysis by X-ray diffraction, showing that the piperidones form the enol tautomers also in the solid state.

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2

Zhang, Yue Cheng, Jing Yuan Gao, Nai Yue Shi, and Ji Quan Zhao. "Synthesis of Chiral Tridentate Ligands Embodying the Bispidine Framework and their Application in the Enantioselective Addition of Diethylzinc to Aldehydes." Advanced Materials Research 396-398 (November 2011): 1236–43. http://dx.doi.org/10.4028/www.scientific.net/amr.396-398.1236.

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Several new chiral tridentate ligands with the bispidine moiety were synthesized from N-alkyl bispidines and chiral amino (or hydroxyl) acids. The synthesized ligands were used as catalysts in the enantioselective addition of diethylzinc to several aromatic aldehydes and an aliphatic aldehyde. High yield and enantioselectivity were received in the cases of aromatic aldehydes as substrates especially when the employed chiral ligand has a hydroxyl group attached to the chiral center. The effect of the structure, the amount of tridentate chiral ligands, solvent and temperature on the enantioselectivity of the addition products were studied. A possible mechanism for the addition of diethylzinc to aldehydes in the presence of bispidine-derived ligands were proposed based upon the catalytic reaction results and referred to the mechanisms proposed for other reaction systems in literatures.

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3

Comba, Peter, Bianca Pokrandt, and Hubert Wadepohl. "Oxidation of Cobalt(II) Bispidine Complexes with Dioxygen." Australian Journal of Chemistry 70, no. 5 (2017): 576. http://dx.doi.org/10.1071/ch16674.

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Bispidine (3,7-diazabicyclo[3.3.1]nonane) ligands, derivatives of diazaadamantane, possess a very rigid backbone and have a high degree of pre-organization for cis-octahedral coordination geometries. Despite their rigidity, they exert a flexible coordination sphere, resulting in stable complexes with a variety of metal ions in various oxidation states. Due to the known high III/II redox potentials of their cobalt complexes, the CoII bispidine complexes are generally resistant to oxidation by dioxygen. Discussed in the present study are various CoII bispidine complexes with tetra- and pentadentate bispidines, with one of these complexes shown to be unstable under aerobic conditions. The decay process has been identified as an oxidative elimination of the 2-methylene pyridine substituent at one of the tertiary amine donors, resulting in picolinate, which is found coordinated to a CoIII product, where the dealkylated N-donor remains unprotonated. The mechanism of this interesting reaction has been studied, and details of the resulting structure of the product complex are discussed.

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4

Ang, Wei Jie, Yong Sheng Chng, and Yulin Lam. "Fluorous bispidine: a bifunctional reagent for copper-catalyzed oxidation and knoevenagel condensation reactions in water." RSC Advances 5, no. 99 (2015): 81415–28. http://dx.doi.org/10.1039/c5ra17093a.

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Fluorous bispidine-type ligands have been developed to demonstrate its bifunctional property as a ligand and base in copper-catalyzed aerobic oxidation, the Knoevenagel condensation and tandem oxidation/condensation in water under mild conditions.

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5

Comba, Peter, Hubert Wadepohl, and Arkadius Waleska. "Redox Properties of Iron Complexes with Pentadentate Bispidine Ligands." Australian Journal of Chemistry 67, no. 3 (2014): 398. http://dx.doi.org/10.1071/ch13454.

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The solution coordination chemistry of iron complexes with the pentadentate bispidine ligands L1, L2, and L3 (dimethyl 9-oxo-2,4-di(pyridin-2-yl)-3,7-diazabicyclo[3.3.1]nonane-1,5-dicarboxylate derivatives) was examined. While in acetonitrile, (L1,2)FeII/III species have a preference for Cl– as co-ligand. The corresponding aqua and hydroxido complexes also prevail in the presence of Cl– in aqueous solution. The observed FeII/III potentials in water (cyclic voltammetry) and potentials of (L1–3)FeIV=O (buffered and unbuffered aqueous solutions) are strikingly similar, i.e. the latter are assigned to (L1–3)FeII/III potentials, and published potentials of FeIV=O complexes with other ligands with uncharged amine-pyridine donors, obtained by cyclic voltammetry, have to be considered with caution.

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6

Lippi, Martina, Josefina Caputo, Antonino Famulari, Alessandro Sacchetti, Carlo Castellano, Fiorella Meneghetti, Javier Martí-Rujas, and Massimo Cametti. "Combined structural and theoretical investigation on differently substituted bispidine ligands: predicting the properties of their corresponding coordination polymers." Dalton Transactions 49, no. 18 (2020): 5965–73. http://dx.doi.org/10.1039/d0dt00799d.

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Pyridine-based bispidine ligands L1–L7 have been studied by single crystal X-ray diffraction and solid-state DFT calculations in an attempt to predict the dynamic properties of their corresponding Mn(ii) coordination polymers.

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7

Comba, Peter, Marion Kerscher, Katharina Rück, and Miriam Starke. "Bispidines for radiopharmaceuticals." Dalton Transactions 47, no. 28 (2018): 9202–20. http://dx.doi.org/10.1039/c8dt01108g.

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Radiometal based radiopharmaceuticals for imaging and therapy require selective ligands (bifunctional chelators, BFCs) that form metal complexes, which are inert against trans-chelation under physiological conditions, linked to a biological vector, directing them to the targeted tissue. Bispidine ligands with a very rigid backbone and widely variable donor sets are reviewed as an ideal class of BFCs, and recent applications are discussed.

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8

Comba, Peter, Dieter Faltermeier, Saskia Krieg, Bodo Martin, and Gopalan Rajaraman. "Spin state and reactivity of iron(iv)oxido complexes with tetradentate bispidine ligands." Dalton Transactions 49, no. 9 (2020): 2888–94. http://dx.doi.org/10.1039/c9dt04578c.

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The iron(iv)oxido complex [(bispidine)Fe^IVO(Cl)]⁺ is shown by experiment and high-level DLPNO-CCSD(T) quantum-chemical calculations to be an extremely short-lived and very reactive intermediate-spin (S = 1) species.

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9

Comba, Peter, Shigemasa Kuwata, Gerald Linti, Máté Tarnai, and Hubert Wadepohl. "Synthesis and Oxidation of Vanadyl Complexes Containing Bispidine Ligands." European Journal of Inorganic Chemistry 2007, no. 5 (February 2007): 657–64. http://dx.doi.org/10.1002/ejic.200600927.

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10

Walther, M., M. Matterna, S. Juran, S. Fähnemann, H. Stephan, W. Kraus, and Franziska Emmerling. "Imidazole-containing Bispidine Ligands: Synthesis, Structure and Cu(II) Complexation." Zeitschrift für Naturforschung B 66 (2011): 0721. http://dx.doi.org/10.5560/znb.2011.66b0721.

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11

Börzel, Heidi, Peter Comba, Karl S. Hagen, Yaroslaw D. Lampeka, Achim Lienke, Gerald Linti, Michael Merz, Hans Pritzkow, and Lyudmyla V. Tsymbal. "Iron coordination chemistry with tetra-, penta- and hexadentate bispidine-type ligands." Inorganica Chimica Acta 337 (September 2002): 407–19. http://dx.doi.org/10.1016/s0020-1693(02)01100-3.

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12

Comba, Peter, Laura Grimm, Chris Orvig, Katharina Rück, and Hubert Wadepohl. "Synthesis and Coordination Chemistry of Hexadentate Picolinic Acid Based Bispidine Ligands." Inorganic Chemistry 55, no. 24 (December 6, 2016): 12531–43. http://dx.doi.org/10.1021/acs.inorgchem.6b01787.

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13

Rossetti, Arianna, Stefano Landoni, Fiorella Meneghetti, Carlo Castellano, Matteo Mori, Greta Colombo Dugoni, and Alessandro Sacchetti. "Application of chiral bi- and tetra-dentate bispidine-derived ligands in the copper(ii)-catalyzed asymmetric Henry reaction." New Journal of Chemistry 42, no. 14 (2018): 12072–81. http://dx.doi.org/10.1039/c8nj01930d.

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14

Lesma, Giordano, Carlo Cattenati, Tullio Pilati, Alessandro Sacchetti, and Alessandra Silvani. "Enantioselective copper-catalyzed cyclopropanation of styrene by means of chiral bispidine ligands." Tetrahedron: Asymmetry 18, no. 5 (March 2007): 659–63. http://dx.doi.org/10.1016/j.tetasy.2007.02.024.

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15

Busche, Christoph, Peter Comba, Andrey Mayboroda, and Hubert Wadepohl. "Novel RuIIComplexes with Bispidine-Based Bridging Ligands: Luminescence Sensing and Photocatalytic Properties." European Journal of Inorganic Chemistry 2010, no. 8 (March 2010): 1295–302. http://dx.doi.org/10.1002/ejic.200901058.

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16

Comba, Peter, Miriam Starke, and Hubert Wadepohl. "Optimization of Hexadentate Bispidine Ligands as Chelators for 64 CuII PET Imaging." ChemPlusChem 83, no. 7 (April 20, 2018): 597–604. http://dx.doi.org/10.1002/cplu.201800110.

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17

Comba, Peter, Martin Maurer, and Prabha Vadivelu. "Oxidation of Cyclohexane by High-Valent Iron Bispidine Complexes: Tetradentate versus Pentadentate Ligands." Inorganic Chemistry 48, no. 21 (November 2, 2009): 10389–96. http://dx.doi.org/10.1021/ic901702s.

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18

Abu‐Odeh, Mahmud, Katharina Bleher, Neethinathan Johnee Britto, Peter Comba, Michael Gast, Madhavan Jaccob, Marion Kerscher, Saskia Krieg, and Marius Kurth. "Pathways of the Extremely Reactive Iron(IV)‐oxido complexes with Tetradentate Bispidine Ligands." Chemistry – A European Journal 27, no. 44 (July 5, 2021): 11377–90. http://dx.doi.org/10.1002/chem.202101045.

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19

Comba, Peter, Basil Kanellakopulos, Charis Katsichtis, Achim Lienke, Hans Pritzkow, and Frank Rominger. "Synthesis and characterisation of manganese(II) compounds with tetradentate ligands based on the bispidine backbone." Journal of the Chemical Society, Dalton Transactions, no. 23 (1998): 3997–4002. http://dx.doi.org/10.1039/a805944f.

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20

Mozhaitsev, E. S., K. Y. Ponomarev, O. S. Patrusheva, A. V. Medvedko, A. I. Dalinger, A. D. Rogachev, N. I. Komarova, et al. "Conjugates of Bispidine and Monoterpenoids as Ligands of Metal Complex Catalysts for the Henry Reaction." Russian Journal of Organic Chemistry 56, no. 11 (November 2020): 1969–81. http://dx.doi.org/10.1134/s1070428020110123.

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21

Comba, Peter, Christina Haaf, and Hubert Wadepohl. "Novel Bispidine Ligands and Their First-Row Transition Metal Complexes: Trigonal Bipyramidal and Trigonal Prismatic Geometries." Inorganic Chemistry 48, no. 14 (July 20, 2009): 6604–14. http://dx.doi.org/10.1021/ic900571v.

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22

Comba, Peter, Carlos Lopez?de?Laorden, and Hans Pritzkow. "Tuning the Properties of Copper(II) Complexes with Tetra- and Pentadentate Bispidine (=3,7-Diazabicyclo[3.3.1]nonane) Ligands." Helvetica Chimica Acta 88, no. 3 (March 2005): 647–64. http://dx.doi.org/10.1002/hlca.200590045.

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23

Scharnagel, Dagmar, Andreas Müller, Felix Prause, Martin Eck, Jessica Goller, Wolfgang Milius, and Matthias Breuning. "The First Modular Route to Core-Chiral Bispidine Ligands and Their Application in Enantioselective Copper(II)-Catalyzed Henry Reactions." Chemistry - A European Journal 21, no. 35 (July 31, 2015): 12488–500. http://dx.doi.org/10.1002/chem.201502090.

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24

Spieler, Jan, Oliver Huttenloch, and Herbert Waldmann. "Synthesis of Chiral Amino Alcohols Embodying the Bispidine Framework and Their Application as Ligands in Enantioselectively Catalyzed Additions to CO and CC Groups." European Journal of Organic Chemistry 2000, no. 3 (February 2000): 391–99. http://dx.doi.org/10.1002/(sici)1099-0690(200002)2000:3<391::aid-ejoc391>3.0.co;2-r.

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25

Spieler, Jan, Oliver Huttenloch, and Herbert Waldmann. "ChemInform Abstract: Synthesis of Chiral Amino Alcohols Embodying the Bispidine Framework and Their Application as Ligands in Enantioselectively Catalyzed Additions to C=O and C=C Groups." ChemInform 31, no. 15 (June 9, 2010): no. http://dx.doi.org/10.1002/chin.200015034.

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26

Comba, Peter, Henning Rudolf, and Hubert Wadepohl. "Synthesis and transition metal coordination chemistry of a novel hexadentate bispidine ligand." Dalton Transactions 44, no. 6 (2015): 2724–36. http://dx.doi.org/10.1039/c4dt03262d.

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With the hexadentate bispidine ligand, the Cu^II and Fe^II (red) complexes are hexacoordinated with a semi-coordinated py4, the Mn^II complex (green) is heptacoordinated.

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27

Grosshauser, Michael, Peter Comba, Jee Young Kim, Keisuke Ohto, Pierre Thuéry, Young Hoon Lee, Yang Kim, and Jack Harrowfield. "Ferro- and antiferromagnetic coupling in a chlorido-bridged, tetranuclear Cu(ii) complex." Dalton Trans. 43, no. 15 (2014): 5662–66. http://dx.doi.org/10.1039/c4dt00305e.

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A binuclear complex of copper(ii) chloride with a heptadentate bispidine-like ligand undergoes dimerisation in the solid state involving chloride bridging and leading to both ferro- and antiferromagnetic coupling of the Cu(ii) centres.

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28

Lippi, Martina, Josefina Caputo, Fiorella Meneghetti, Carlo Castellano, Javier Martí-Rujas, and Massimo Cametti. "Tuneable solvent adsorption and exchange by 1D bispidine-based Mn(ii) coordination polymers via ligand design." Dalton Transactions 49, no. 38 (2020): 13420–29. http://dx.doi.org/10.1039/d0dt02734k.

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General trends on the structural and dynamic properties of bispidine-based Mn(ii) 1D coordination polymers have been outlined on the basis of both single-crystals and microcrystalline powders data and by solvent adsorption and exchange experiments.

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29

Choudhary, Neha, Alexander Dimmling, Xiaozhu Wang, Lily Southcott, Valery Radchenko, Brian O. Patrick, Peter Comba, and Chris Orvig. "Octadentate Oxine-Armed Bispidine Ligand for Radiopharmaceutical Chemistry." Inorganic Chemistry 58, no. 13 (June 18, 2019): 8685–93. http://dx.doi.org/10.1021/acs.inorgchem.9b01016.

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30

Bukowski, Michael R., Peter Comba, Christian Limberg, Michael Merz, Lawrence Que, and Tobias Wistuba. "Bispidine Ligand Effects on Iron/Hydrogen Peroxide Chemistry." Angewandte Chemie International Edition 43, no. 10 (February 27, 2004): 1283–87. http://dx.doi.org/10.1002/anie.200352523.

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31

Legdali, Tarik, Amandine Roux, Carlos Platas-Iglesias, Franck Camerel, Aline M. Nonat, and Loïc J. Charbonnière. "Substitution-Assisted Stereochemical Control of Bispidone-Based Ligands." Journal of Organic Chemistry 77, no. 24 (December 5, 2012): 11167–76. http://dx.doi.org/10.1021/jo302248c.

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32

Comba, Peter, Una Jermilova, Chris Orvig, Brian O. Patrick, Caterina F. Ramogida, Katharina Rück, Christina Schneider, and Miriam Starke. "Octadentate Picolinic Acid-Based Bispidine Ligand for Radiometal Ions." Chemistry - A European Journal 23, no. 63 (October 17, 2017): 15945–56. http://dx.doi.org/10.1002/chem.201702284.

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33

Comba, Peter, and Achim Lienke. "Bispidine Copper(II) Compounds: Effects of the Rigid Ligand Backbone." Inorganic Chemistry 40, no. 20 (September 2001): 5206–9. http://dx.doi.org/10.1021/ic010200r.

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34

Braun, Felix, Peter Comba, Laura Grimm, Dirk-Peter Herten, Bianca Pokrandt, and Hubert Wadepohl. "Ligand-sensitized lanthanide(III) luminescence with octadentate bispidines." Inorganica Chimica Acta 484 (January 2019): 464–68. http://dx.doi.org/10.1016/j.ica.2018.09.078.

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35

Comba, Peter, Michael Morgen, and Hubert Wadepohl. "First row transition metal complexes of a hexadentate pyrazole-based bispidine ligand." Polyhedron 52 (March 2013): 1239–45. http://dx.doi.org/10.1016/j.poly.2012.06.035.

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36

Křižan, Martin, Jaromír Vinklárek, Milan Erben, Zdeňka Růžičková, and Jan Honzíček. "Iron(II) complex with modified bispidine ligand: Synthesis and catalytic alkyd drying." Inorganica Chimica Acta 486 (February 2019): 636–41. http://dx.doi.org/10.1016/j.ica.2018.11.035.

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37

Abad‐Galán, Laura, Patrick Cieslik, Peter Comba, Michael Gast, Olivier Maury, Lucca Neupert, Amandine Roux, and Hubert Wadepohl. "Excited State Properties of Lanthanide(III) Complexes with a Nonadentate Bispidine Ligand." Chemistry – A European Journal 27, no. 40 (May 2, 2021): 10303–12. http://dx.doi.org/10.1002/chem.202005459.

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38

Comba, Peter, Lena Daumann, Julie Lefebvre, Gerald Linti, Bodo Martin, Johannes Straub, and Thomas Zessin. "Mono- and Dinuclear Copper(II) and Iron(II) Complexes of a Tetradentate Bispidine-diacetate Ligand." Australian Journal of Chemistry 62, no. 10 (2009): 1238. http://dx.doi.org/10.1071/ch09321.

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The synthesis of a new tetradentate bispidine ligand (LH2 = 2,2′-(1,5-dimethyl-3,7-diazabicyclo[3.3.1]nonan-3,7-diyl)diacetic acid), containing two tertiary amine and two carboxylic groups, is reported along with the preparation and characterization of the corresponding Cu(ii) and Fe(iii) complexes. The mononuclear [LCu(OH2)]·4H2O (1) complex contains a five-coordinate Cu(ii) centre, which adopt a square pyramidal geometry with the four donor atoms of the ligand (N2O2) occupying the equatorial plane and a water molecule occupying the axial position. An axial electron paramagnetic resonance (EPR) signature is observed for 1 (gx = 2.054, gy = 2.050, gz = 2.234; Ax = 18 × 10–4 cm–1, Ay = 20 × 10–4 cm–1, Az = 188 × 10–4 cm–1) in frozen methanolic solution (0.1 mM). Dimerization of 1 in concentrated solution (10 mM) was observed by EPR spectroscopy (g∥ = 2.24, g⊥ = 2.07, A∥ = 195 × 10–4 cm–1, and A⊥ = 12 × 10–4 cm–1 for each Cu centre). The structure of the dimeric species [LCu(OH2)]2 (1b) was determined by a combination of molecular mechanics with the simulation of the EPR spectrum (MM-EPR). The dimer has each Cu(ii) centre coordinated by the two amines and one carboxylate of one ligand (L), while the other carboxylate bridges to the second Cu(ii) centre; each coordination sphere is completed by an axial water ligand, with the Cu···Cu distance 5.5 Å (relative orientation from EPR simulation: α = 60°, β = 0°, γ = 25°). The aqueous reaction between the tetradentate ligand (L) and Fe(ii) leads to the formation of an oxo-bridged diiron(iii) complex, [LFe-(μ-O)-FeL] (2), with a Fe–O–Fe angle of 180° (dFe···Fe = 3.516 Å), as revealed by X-ray crystallography. The Mössbauer spectrum of 2 consists of one quadrupole doublet with an isomer shift (δ) of 0.37 mm s–1 and a quadrupole splitting (ΔEQ) of 0.73 mm s–1, which is consistent with S = 5/2 Fe(iii) centres. Variable-temperature magnetic susceptibility measurements show the presence of intramolecular antiferromagnetic interactions between the two Fe(iii) centres, with an exchange coupling constant J of –91(3) cm–1 (H = –2JS1·S2).

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39

Comba, Peter, Christina Haaf, Achim Lienke, Amsaveni Muruganantham, and Hubert Wadepohl. "Synthesis, Structure, and Highly Efficient Copper-Catalyzed Aziridination with a Tetraaza-Bispidine Ligand." Chemistry - A European Journal 15, no. 41 (September 11, 2009): 10880–87. http://dx.doi.org/10.1002/chem.200802682.

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40

Comba, Peter, Marion Kerscher, Geoffrey A Lawrance, Bodo Martin, Hubert Wadepohl, and Steffen Wunderlich. "Stable Five- and Six-Coordinate Cobalt(III) Complexes with a Pentadentate Bispidine Ligand." Angewandte Chemie International Edition 47, no. 25 (June 9, 2008): 4740–43. http://dx.doi.org/10.1002/anie.200800515.

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41

Bleiholder, Christian, Heidi Börzel, Peter Comba, Rosana Ferrari, Matthias Heydt, Marion Kerscher, Shigemasa Kuwata, et al. "Coordination Chemistry of a New Rigid, Hexadentate Bispidine-Based Bis(amine)tetrakis(pyridine) Ligand." Inorganic Chemistry 44, no. 22 (October 2005): 8145–55. http://dx.doi.org/10.1021/ic0513383.

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42

Rossetti, Arianna, Martina Lippi, Javier Martí‐Rujas, Alessandro Sacchetti, and Massimo Cametti. "Highly Dynamic and Tunable Behavior of 1D Coordination Polymers Based on the Bispidine Ligand." Chemistry – A European Journal 24, no. 72 (November 21, 2018): 19368–72. http://dx.doi.org/10.1002/chem.201804782.

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43

Cieslik, Patrick, Peter Comba, Waldemar Hergett, Rüdiger Klingeler, Günter Finn Peter Plny, Lena Spillecke, and Gunasekaran Velmurugan. "Molecular magnetic properties of a dysprosium(III) complex coordinated to a nonadentate bispidine ligand." Zeitschrift für anorganische und allgemeine Chemie 647, no. 8 (March 24, 2021): 843–49. http://dx.doi.org/10.1002/zaac.202000475.

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44

Comba, Peter, Shunichi Fukuzumi, Hiroaki Kotani, and Steffen Wunderlich. "Electron-Transfer Properties of an Efficient Nonheme Iron Oxidation Catalyst with a Tetradentate Bispidine Ligand." Angewandte Chemie International Edition 49, no. 14 (March 29, 2010): 2622–25. http://dx.doi.org/10.1002/anie.200904427.

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45

Comba, Peter, Bodo Martin, Alexander Prikhod`ko, Hans Pritzkow, and Heidi Rohwer. "Structural variation in the copper(II) complexes with a tetradentate bis-6-methylpyridine-substituted bispidine ligand." Comptes Rendus Chimie 8, no. 9-10 (September 2005): 1506–18. http://dx.doi.org/10.1016/j.crci.2005.03.003.

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46

Comba, Peter, Maik Jakob, Katharina Rück, and Hubert Wadepohl. "Tuning of the properties of a picolinic acid-based bispidine ligand for stable copper(II) complexation." Inorganica Chimica Acta 481 (September 2018): 98–105. http://dx.doi.org/10.1016/j.ica.2017.08.022.

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47

Barker, Graeme, Peter O’Brien, and Kevin R. Campos. "Investigation of bispidines as the stoichiometric ligand in the two-ligand catalytic asymmetric deprotonation of N-boc pyrrolidine." Arkivoc 2011, no. 5 (April 3, 2011): 217–29. http://dx.doi.org/10.3998/ark.5550190.0012.519.

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48

Hosken, Gladys D., and Robert D. Hancock. "Very strong and selective complexation of small metal lons by a highly preorganised open-chain bispidine-based ligand." Journal of the Chemical Society, Chemical Communications, no. 11 (1994): 1363. http://dx.doi.org/10.1039/c39940001363.

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49

Hosken, Gladys D., Christine C. Allan, Jan C. A. Boeyens, and Robert D. Hancock. "Structure of the copper(II) complex of a highly preorganised tetradentate ligand based on bispidine (3,7-diazabicyclo[3.3.1]nonane)." Journal of the Chemical Society, Dalton Transactions, no. 22 (1995): 3705. http://dx.doi.org/10.1039/dt9950003705.

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Castellano, Carlo, Alessandro Sacchetti, and Fiorella Meneghetti. "Spectroscopic, Structural, and Computational Characterization of Three Bispidinone Derivatives, as Ligands for Enantioselective Metal Catalyzed Reactions." Chirality 28, no. 4 (February 22, 2016): 332–39. http://dx.doi.org/10.1002/chir.22586.

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