Improved Preparation of Monosodium Cyanamide

Weiß, Stefan; Krommer, Helmut

doi:10.1002/anie.197405461

Cited by 2 publications

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“…The oxidation of the pyridine nitrogen can be realized under mild conditions by using urea hydrogen peroxide with phthalic anhydride in acetonitrile . Triaminoguanidinium salts ( 4 ‐X) are obtained by the amination of guanidinium salts with hydrazine hydrate . The resulting compounds ( 5 ‐X) serve as an excellent ligands for Zn II .…”

Section: Resultsmentioning

confidence: 99%

Supramolecular Metallacycles and Their Binding of Fullerenes

Göb

Ehnbom

Sturm

et al. 2020

Chemistry A European J

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The synthesis of a new triaminoguanidinium‐based ligand with three tris‐chelating [NNO]‐binding pockets and C3 symmetry is described. The reaction of tris‐(2‐pyridinylene‐N‐oxide)triaminoguanidinium salts with zinc(II) formate leads to the formation of cyclic supramolecular coordination compounds which in solution bind fullerenes in their spherical cavities. The rapid encapsulation of C60 can be observed by NMR spectroscopy and single‐crystal X‐ray diffraction and is verified using computation.

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Section: Resultsmentioning

confidence: 99%

Supramolecular Metallacycles and Their Binding of Fullerenes

Göb

Ehnbom

Sturm

et al. 2020

Chemistry A European J

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“…Triaminoguanidinium salts are easily prepared by a substitution reaction between guanidinium salts with hydrazine [1]. Their amine functionalities can be used to perform condensation reactions with aromatic and aliphatic aldehydes and ketones leading to imine compounds [2] [3] [4] [5].…”

Section: Introductionmentioning

confidence: 99%

SnIV and ZrIV Compounds of a C3-Symmetric Ligand with Amine [ONN] and [ONNO] Coordination Sites

Eßen¹,

Oppel²

2017

IJOC

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This contribution describes the synthesis and structural characterization of a triaminoguanidinium (TAG)-based ligand [H 6 (OMe) 3 L imin ]BF 4 (1) containing imine bonds (L imin ) and its reduction with a dimethylamino borane complex to the corresponding amine compound (L amin )[H 9 (OMe) 3 L amin ]OTs (2). In solution, both ligands are C 3 -symmetric but crystal structures show the great influence of the reduction on the molecular structure. We show that the planar imine ligand is converted to a highly flexible compound which has nine potential coordination sites, three phenoxy and six amine donors, for binding metal ions. First solid state structures of 1:1 (metal:ligand) coordination compounds with Sn IV and Zr IV are presented. Sn IV exhibits an octahedral coordination sphere and is bound in a facial [ONN] coordination pocket. Zr IV is pentagonal bipyramidal coordinated and the ligand stabilizes this with its'[ONNO] binding sites.

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Improved Preparation of Monosodium Cyanamide

Abstract: Fig. I. Structure of the cation [O(Hgl)zHgOH]-; bond lengths [pm] and bond angles ["I.

Cited by 2 publications

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Supramolecular Metallacycles and Their Binding of Fullerenes

Supramolecular Metallacycles and Their Binding of Fullerenes

Sn<sup>IV</sup> and Zr<sup>IV</sup> Compounds of a <i>C</i><sub>3</sub>-Symmetric Ligand with Amine [ONN] and [ONNO] Coordination Sites

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Improved Preparation of Monosodium Cyanamide

Abstract: Fig. I. Structure of the cation [O(Hgl)zHgOH]-; bond lengths [pm] and bond angles ["I.

Cited by 2 publications

References 1 publication

Supramolecular Metallacycles and Their Binding of Fullerenes

Supramolecular Metallacycles and Their Binding of Fullerenes

Sn&lt;sup&gt;IV&lt;/sup&gt; and Zr&lt;sup&gt;IV&lt;/sup&gt; Compounds of a &lt;i&gt;C&lt;/i&gt;&lt;sub&gt;3&lt;/sub&gt;-Symmetric Ligand with Amine [ONN] and [ONNO] Coordination Sites

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Sn<sup>IV</sup> and Zr<sup>IV</sup> Compounds of a <i>C</i><sub>3</sub>-Symmetric Ligand with Amine [ONN] and [ONNO] Coordination Sites