Cyclams with varied degree of protonation in the assemblies with cyano complexes of Mo and W

doi:10.1016/j.poly.2012.08.020

Cyclams with varied degree of protonation in the ...

Bibliographic description

punktacja MNiSW [2012 A]: 30

title:	Cyclams with varied degree of protonation in the assemblies with cyano complexes of Mo and W
author:	Nowicka Beata , Nitek Wojciech , Sieklucka Barbara , Reczyński Mateusz
Journal title:	Polyhedron
volume:	47
issue:	1
date of publication:	2012
pages:	73-78
ISSN:	0277-5387
eISSN:	1873-3719
DOI:	10.1016/j.poly.2012.08.020
language:	English
Journal language:	English
abstract in english:	Five ionic assemblies of octacoordinated cyano complexes of molybdenum and tungsten with protonated cyclam (1,4,8,11-tetraazacyclotetradecane) and tmc (1,4,8,11-tetramethyl-1,4,8,11-tetraazacyclotetra- decane) have been obtained: (cyclamH 4 )[Mo IV (CN) 8 ] 1.5H 2 O( 1 ), (cyclamH 2 )(cyclamH 4 )[W V (CN) 8 ] 2 4H 2 O ( 2 ), (cyclamH 4 )[W V (CN) 8 ]Cl 4H 2 O( 3 ), (tmcH 4 )(tmcH 2 )[W V (CN) 8 ] 2 4H 2 O( 4 ) and (cyclamH 4 )[W IV (CN) 6 - (bpy)] 2 12H 2 O( 5 ) (bpy = 2,2 0 -bipyridine). The presence of 3d metal cations as a template led to partly protonated cyclams in 2 and 4 , where for the first time cyclam and tmc cations of different degree of pro- tonation are encountered within one structure. Compounds 2 , 3 and 5 crystallise in triclinic system space group P 1, while 4 crystallises in monoclinic system space group P 21/ c . Compound 1 shows the highest symmetry of the lattice: orthorombic system space group I 41/ a . Thermogravimetric analyses of 1 , 3 and 4 show the presence of stable anhydrous phase below 140° C.
keywords in english:	octacyanotungstate, cyclam, octacyanomolybdate, bipyridinehexacyanotungstate
departmental parameterization:	30
affiliation:	Wydział Chemii : Zakład Chemii Nieorganicznej, Wydział Chemii : Zakład Krystalochemii i Krystalofizyki
type:	journal article
subtype:	academic paper