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The Crystal Structure of (2 R , 7 S , 10 R )‐2,10‐diamino‐5,5,7‐trimethyl‐4,8‐diazaundecanenickel (II) perchlorate
Author(s) -
StoeckliEvans Helen
Publication year - 1976
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19760590402
Subject(s) - chemistry , substituent , orthorhombic crystal system , perchlorate , ring (chemistry) , crystal structure , cyclohexane conformation , crystallography , amine gas treating , stereochemistry , chelation , molecule , hydrogen bond , ion , inorganic chemistry , organic chemistry
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.