Journal ArticleDOI
Übergangsmetallkomplexe des Protonenschwammes 4,9-Dichlorchino[7,8-h]chinolin: ein stark gekrümmtes aromatisches System und extreme „Out-of-plane“-Position des Übergangsmetallzentrums
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This article is published in Angewandte Chemie.The article was published on 2001-09-03. It has received 8 citations till now.read more
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Mono- and Diprotonation of the Superbasic Bisguanidine 1,2-Bis(N,N,N′,N′-tetramethylguanidino)benzene (btmgb) and PtII and PtIV Complexes of Chelating Bisguanidines and Guanidinates
TL;DR: New Pt complexes of chelating bisguanidines and guanidinate ligands were synthesized and characterized, and the hpp(-) anion is eta2-coordinated in the Pt IV complex, which is formed by reaction between cis-[(hppH)2PtCl2] and H2O2 in CH3CN.
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The First Metal Complexes of the Proton Sponge 1,8-Bis(N,N,N′,N′-tetramethylguanidino)naphthalene: Syntheses and Properties
Ute Wild,Olaf Hübner,Astrid Maronna,Markus Enders,Elisabeth Kaifer,Hubert Wadepohl,Hans-Jörg Himmel +6 more
TL;DR: In this article, the first transition metal complexes of the proton sponge 1,8-bis naphthalene (btmgn) were synthesized and properties were reported.
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Superbasic Alkyl‐Substituted Bisphosphazene Proton Sponges: Synthesis, Structural Features, Thermodynamic and Kinetic Basicity, Nucleophilicity and Coordination Chemistry
Julius F. Kögel,Xiulan Xie,Eduard Baal,Donatas Gesevičius,Benjamin Oelkers,Borislav Kovačević,Jörg Sundermeyer +6 more
TL;DR: An easily accessible class of superbasic proton sponges based on the 1,8-bisphosphazenylnaphthalene (PN) proton pincer motif and P-alkyl substituents ranging from methyl (TMPN) to n-butyl (TBPN), isopropyl (TiPrPN) and cyclopentyl (TcyPPN), which were studied by means of NMR-spectroscopic methods.
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Two C2-symmetric chelating P2-bisphosphazene superbases connected via a binaphthyl backbone – synthesis, structural features and preparation of a cationic alkyl aluminum complex
TL;DR: The outstanding basicity of the chiral tetrasphosphazenes presented herein leads to interesting perspectives for application in asymmetric Brønsted base catalysis.
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The Proton Sponge Effect: Substitution of Quino[7,8‐h]quinoline and the First Structurally Characterised Derivatives
TL;DR: In this article, a new route to unsymmetrical derivatives of quino[7,8-h]quinoline was developed and X-ray crystal structure determinations of the resulting products revealed the propensity for derivatives of this molecule to exist in either stabilised keto or imino forms as a result of the formation of a strong intramolecular N−H···N hydrogen bond.
References
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Four-versus five-co-ordination in palladium(II) and platinum(II) complexes containing 2,9-dimethyl-1,10-phenanthroline (dmphen). Crystal structures of [PtCl2(dmphen)] and [Pt(η2-C2H4)Cl2(dmphen)]
Francesco Paolo Fanizzi,Francesco P. Intini,Luciana Maresca,Giovanni Natile,Maurizio Lanfranchi,Antonio Tiripicchio +5 more
TL;DR: In this paper, the four-coordinate complexes with 2,9-dimethyl-1,10-phenanthroline [MX2(dmphen)](M = Pt, X2= Cl21, ClBr 2, Br23, or I24; M = Pd, X 2= Cl25, Clbr 6, Br27 or I28) have been prepared for the first time.
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Quino[7,8‐h]quinoline, a New Type of “Proton Sponge”
TL;DR: In this article, the relative importance of the hydrophobic shielding of the hydrogen bonds of quino[7,8-h]quinoline has been assessed and compared with 1,8 bis(dimethylamino)naphthalene 2 (proton sponge).
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Inverse Relationship between the Kinetic and Thermodynamic Stabilities of the Misdirected Ligand Complexes .DELTA./.LAMBDA.-(.delta./.lambda.-1,1'-Biisoquinoline)bis(2,2'-bipyridine)metal(II) (metal = Ruthenium, Osmium)
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