Premium
Ba 6 Si 6 N 10 O 2 (CN 2 ) – A Nitridosilicate with a NPO‐Zeolite Structure Type Containing Carbodiimide Ions
Author(s) -
Pagano Sandro,
Oeckler Oliver,
Schröder Thorsten,
Schnick Wolfgang
Publication year - 2009
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200900157
Subject(s) - carbodiimide , chemistry , superstructure , zeolite , ion , crystallography , amorphous solid , type (biology) , inorganic chemistry , polymer chemistry , organic chemistry , catalysis , thermodynamics , physics , ecology , biology
A new precursor approach leading to NPO‐zeolite analogous nitridosilicates with cavities containing carbodiimide ions is presented. The reaction of amorphous “Si(CN 2 ) 2 ” and barium in liquid sodium afforded Ba 6 Si 6 N 10 O 2 (CN 2 ) as yellow crystals. The structure is a rare example of the NPO‐zeolite framework type and the first nitridosilicate incorporating carbodiimide ions. The partially ordered integration of carbodiimide moieties in the channels leads to the formation of a superstructure ( P $\bar {6}$ , no. 174, a = 16.255(2), c = 5.4690(11) Å, Z = 3, R 1 = 0.0299, 2139 data, 100 parameters) and merohedral twinning. A comprehensive structure solution is presented, taking all possible ordering variants and twin laws into account.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)