In:
European Journal of Inorganic Chemistry, Wiley, Vol. 2009, No. 17 ( 2009-06), p. 2536-2546
Abstract:
The homo‐ and heterodinuclear complexes XM(μ‐dppm) 2 M′X (M = M′ = Pd, X = Cl 1a ; M = M′ = Pd, X = I 1b ; M = Pd, M′ = Pt, X = Cl 2a ; M = Pd, M′ = Pt, X = I 2b ; M = M′ = Pt, X = Cl 3a ; M = M′ = Pt, X = I 3b ) react with the diisocyanide ligand 1,2‐bis(2‐isocyanophenoxy)ethane (diNC) or the more soluble 1,2‐bis(2‐isocyano‐4‐ tert ‐butylphenoxy)ethane ( t BudiNC) in a 1:1 ratio to provide the thermally stable polymeric materials 4 – 9 {[XM(μ‐dppm) 2 M′(μ‐CN‐C 6 H 3 R‐2‐OCH 2 CH 2 O‐2‐C 6 H 3 R‐NC)]X} n (M = M′ = Pd, R = H, X = Cl 4a , I 4b ; R = t Bu, X = Cl 7 ; M = M′ = Pt, R = H, X = Cl 5a , I 5b ; R = t Bu, X = Cl 8 ; M = Pd, M′ = Pt, R = H, X = Cl 6a , I 6b ; R = t Bu, X = Cl 9 ). These A‐frame‐containing materials have been characterized in solution or in the solid state by 31 P NMR (MAS) spectroscopy, elemental analysis, MALDI‐TOF, DSC, TGA, IR and T 1 /NOE [ 31 P NMR spin‐lattice relaxation time and nuclear Overhauser enhancement constant (NOE) measurements]. The IR, Raman [ν(CN) bridging vs. terminal] and NMR spectroscopic data reveal the presence of an A‐frame structure for these new materials. Evidence of an oligomer (including at least two units, determined by T 1 /NOE experiments) – polymer equilibrium in solution was obtained at room temperature. These polymers are luminescent (phosphorescence) at 77 K in solution and in the solid state, exhibiting broad emission bands in the 500–800 nm range. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
Type of Medium:
Online Resource
ISSN:
1434-1948
,
1099-0682
DOI:
10.1002/ejic.v2009:17
DOI:
10.1002/ejic.200900103
Language:
English
Publisher:
Wiley
Publication Date:
2009
detail.hit.zdb_id:
1475009-0
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