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SYNTHESIS OF MONOSUBSTITUTED PENTAKIS(2,6-DIETHYLPHENYLISO-CYANIDE)COBALT(I) COMPLEXES WITH BIDENTATE TERTIARY PHOSPHINE LIGANDS. II. BIMETALLIC COMPLEXES
Titel:
SYNTHESIS OF MONOSUBSTITUTED PENTAKIS(2,6-DIETHYLPHENYLISO-CYANIDE)COBALT(I) COMPLEXES WITH BIDENTATE TERTIARY PHOSPHINE LIGANDS. II. BIMETALLIC COMPLEXES
Auteur:
Becker, Clifford A. L.
Verschenen in:
Journal of coordination chemistry
Paginering:
Jaargang 30 (1993) nr. 3-4 pagina's 253-259
Jaar:
1993-12-01
Inhoud:
Reaction of bidentate tertiary phosphines with excess [Co(CNR)5]BF4, or reaction of [Co(CNR)4L-L]BF4 with excess [Co(CNR)5]BF4, leads to bimetallic complexes of the form, [(RNC)4CoL-LCo(CNR)4](BF4)2, R = 2,6-Et2C6H3, L-L = p-Ph2PC6H4PPh2, Ph2PC═CPPh2, Me2PCH2CH2PMe2, Ph2PCH2CH2PPh2, Ph2PCH2CH2CH2PPh2. Comparison of the v(- N═C) IR patterns, electronic spectra, and molar conductivity values of these bimetallic complexes with data for other Co(I)-organoisocyanide complexes indicates that the two -Co(CNR)4 moieties are almost totally independent of each other. Recorded λmax values are the same as for the [Co(CNR)4L-L]BF4 complexes, but the ε values, although very large, are less than double. ΛM values in acetone, and probably also in CH2Cl2, are better interpreted as twice the normal conductivity for 1:1 electrolytes than conductivity for 2:1 electrolytes.
Uitgever:
Taylor & Francis
Bronbestand:
Elektronische Wetenschappelijke Tijdschriften
Details van artikel 103 van 116 gevonden artikelen
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