Synthesis, crystal structure, and photoluminescence of a lithium perchlorate complex with 18-crown-6

2019 ◽  
Vol 60 (7) ◽  
Keyword(s):  
Crystal Structure ◽  
Lithium Perchlorate ◽  
Perchlorate Complex

A barium perchlorate complex with a lateral macrobicycle derived from 4,13-diaza-18-crown-6 containing a pyridine Schiff base spacer

2003 ◽  
Vol 59 (11) ◽  
pp. m450-m451 ◽  
Author(s):  
Fernando Avecilla ◽  
David Esteban ◽  
Carlos Platas-Iglesias ◽  
Susana Fernández-Martínez ◽  
Andres De Blas ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Schiff Base ◽  
Coordination Sphere ◽  
Lone Pair ◽  
Coordination Core ◽  
Perchlorate Complex ◽  
Barium Perchlorate

In the crystal structure of (perchlorato-κ2 O,O′))(28,31,36,39tetraoxa-1,9,17,25,42-pentaazapentacyclo[23.8.5.111,15.03,8.018,23]nonatriaconta-3,5,7,9,11,13,15,16,18,20,22-undecaene-κ8 N 1,N 9, N 17,N 42,O 28,O 31,O 36,O 39)barium(II) perchlorate, [Ba(ClO4)(C33H41N5O4)](ClO4), the BaII cation is situated in the macrobicyclic cavity, bound to only eight of the nine available donor atoms of the Schiff base macrobicyclic receptor. The pivotal N5 atom does not belong to the coordination sphere of the BaII ion, in spite of its endo conformation with the lone pair directed towards the inside of the cavity. The BaII ion completes its coordination core with two O atoms of one bidentate perchlorate group.

Twinning, disorder and phase transition in ferrous Perchlorate hexahydrate crystals

1981 ◽  
Vol 155 (1-2) ◽  
Author(s):  
Minakshi Ghosh ◽  
Siddhartha Ray
Keyword(s):  
Crystal Structure ◽  
Phase Transition ◽  
Lithium Perchlorate ◽  
Space Group ◽  
Perchlorate Hexahydrate

AbstractThe crystal structure of ferrous Perchlorate hexahydrate resembles that of lithium Perchlorate trihydrate (space group

The sodium perchlorate complex of cis-syn-cis dicyclohexano-24-crown-8 ether. X-ray crystal structure and solution conformations as studied by variable temperature 13C NMR spectroscopy at 125 MHz. An example of eight-coordinate sodium

1992 ◽  
Vol 70 (6) ◽  
pp. 1688-1695 ◽  
Author(s):  
G. W. Buchanan ◽  
Y. Lear ◽  
C. Bensimon
Keyword(s):  
Crystal Structure ◽  
Variable Temperature ◽  
Sodium Perchlorate ◽  
13C Nmr Spectroscopy ◽  
Ring Inversion ◽  
X Ray ◽  
Free Energy Of Activation ◽  
Perchlorate Complex ◽  
C Nmr ◽  
Coalescence Temperature

The major isomer obtained by hydrogenation of dibenzo-24-crown-8 ether is shown to have the cis-syn-cis configuration as determined from the crystal structure of its sodium perchlorate complex. This material possesses eight-coordinate sodium with Na—O distances ranging from 2.54 to 2.78 Å. The complex is shown to exist in a single asymmetric conformation below 240 K as determined by 13C NMR at 125 MHz. From NMR coalescence temperature measurement, the free energy of activation for cyclohexane ring inversion in this complex has been determined to be 51.0 ± 0.6 kJ/mol.

scholarly journals The Crystal Structure of 3,3,7,7,11,11-Hexamethyl-1,5,9-trioxacyclododecane and its (1:1) Complex with Lithium Perchlorate at -150 degrees C.

1987 ◽  
Vol 41a ◽  
pp. 342-348 ◽  
Author(s):  
P. Groth ◽  
Halvor Kvande ◽  
Wei Qing Bin ◽  
Vernon D. Parker ◽  
L. Niinistö
Keyword(s):  
Crystal Structure ◽  
Lithium Perchlorate

Preparation, Crystal Structure and Explosive Properties of Copper(II) Perchlorate Complex with 4-Amino-1,2,4-Triazole and Water

2011 ◽  
Vol 36 (2) ◽  
pp. 151-159 ◽  
Author(s):  
Stanisław Cudziło ◽  
Waldemar Trzciński ◽  
Marcin Nita ◽  
Sławomir Michalik ◽  
Stanisław Krompiec ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Explosive Properties ◽  
Perchlorate Complex
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