𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The Crystal Structure of (2 R, 7 S, 10 R)-2,10-diamino-5,5,7-trimethyl-4,8-diazaundecanenickel (II) perchlorate

✍ Scribed by Helen Stoeckli-Evans

Publisher
John Wiley and Sons
Year
1976
Tongue
German
Weight
327 KB
Volume
59
Category
Article
ISSN
0018-019X

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The structure of the title compound, a tricyclic Ni(II) tetra‐amine complex has been determined from analysis of photographic X‐ray data. The crystal system is orthorhombic, space group __P__2~1~2~1~2~1~, with unit cell dimensions a = 9.802, b = 8.998, c = 24.378 Å. The Ni atom is square planar coordinated. The six‐membered chelate ring has a chair conformation. One of the five‐membered chelate rings has a distorted gauche (λ) conformation with the methyl substituent in an equatorial position, the other has an unsymmetrical gauche (δ) conformation with the methyl substituent axial.

📜 SIMILAR VOLUMES

Stereoselectivity in Reactions of Metal
Stereoselectivity in Reactions of Metal Complexes IV. Asymmetric Synthesis of (2R, 7S, 10R)- and (2R, 7R, 10R)-2, 10-diamino-5, 5, 7-trimethyl-4, 8-diazaundecanenickel (II) by Stereoselective Hydrogenation of (2R, 10R)-2, 10-diamino-5, 5, 7-trimethyl-4, 8-diaza-7-undecenenickel(II)
✍ Bruno Güntert; Saturnin Claude; Klaus Bernauer 📂 Article 📅 1975 🏛 John Wiley and Sons 🌐 German ⚖ 852 KB

## Abstract The catalytic hydrogenation of (2__R__, 10__R__)‐2, 10‐diamino‐5, 5, 7‐trimethyl‐4, 8‐diaza‐7‐undecenenickel(II) yields two products when the reaction is performed in the presence of ethylenediamine, but only one, when ethylenediamine is absent. The stereochemistry of the reaction is di

Stereoselective Double Functionalization
Stereoselective Double Functionalization of Iron-Carbonyl Complexes of 5,6,7,8-Tetramethylidenebicyclo[2.2.2]oct-2-ene. Crystal Structure and Absolute Configuration of (–)-trans-μ-[(2S,5R,7S)-C,5,6,C-η:C,7,8,C-η-(6,7,8-trimethylidene-5-((Z)-2-oxopropylidene)-2-bicyclo[2.2.2]octyl acetate)]-bis(tricarbonyliron)
✍ Enrico Tagliaferri; Philippe Campiche; Raymond Roulet; Raphy Gabioud; Pierre Vog 📂 Article 📅 1985 🏛 John Wiley and Sons 🌐 German ⚖ 559 KB

## Abstract The __Friedel__‐__Crafts__ monoacylation of __trans__‐η‐[(1__RS__,2__RS__,4__SR__,5__SR__,6__RS__,7__SR__,8__SR__)‐__C__,5,6,__C__‐η:__C__,7,8,__C__‐η‐(5,6,7,8‐tetramethylidene‐2‐bicyclo[2.2.2]octyl acetate)]‐bis(tricarbonyliron) ((±)‐**5**) is highly stereoselective and yields __trans_