Infrared spectra of complexes of 8-aminoquinoline with lanthanide halides

Basile, L. J.; Kovacic, D. L.; Ferraro, John R.

doi:10.1021/ic50048a053

Cited by 12 publications

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“…For the rare earth complexes with 8-aminoquinoline, no definite assignments could be made for 'VMN and 'VMX because of the complexity of the far-infrared spectra of these compounds. 24 Table 7-12 shows 'VMN stretching vibration assignments made for transition metal(II) complexes with aniline. 25 These assignments occur at higher frequencies than comparable complexes with pyridine or substituted pyridine ligands (see Section 7-5).…”

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Metal-Nitrogen Vibrations

Basile¹

1971

Low-Frequency Vibrations of Inorganic and Coordination Compounds

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In recent years considerable effort has been directed toward complexes involving metal-nitrogen bonds. Infrared assignments for the metalnitrogen (VMN) vibration in various coordination complexes have become more numerous. Assignments for the metal-nitrogen bending vibrations have received less attention. In general, the infrared intensity of the VMN vibration is weak to medium in nature, and thus has been the major cause of some confusion in the assignments. Raman investigations of these compounds have been minimal in nature for experimental reasons already mentioned in Chapter 6.The factors determining the position of the VMN vibration are the same as those contributing to the position of the VMX vibration and have previously been discussed. In the case of the metal-nitrogen bond, the bond orders may vary, as was found for the metal-oxygen bond. For metal-nitrogen triple bonds, the stretching frequency may extend as high as --1100 em-I. On the other hand, metal-nitrogen links with a bond order of one appear in the lower-frequency range of 200-300 em-I.The confusion in the metal-nitrogen assignments has centered on the metal-nitrogen vibration in metal (III) ammine complexes. Much of this has been due to the low intensity of this vibration. Deuteration studies and theoretical studies such as the normal coordinate treatment have been very helpful in solving this problem. In particular, the works of Sacconi,1 Griffith,2 and Shimanouchi et al. 3 ,4 have been very valuable. METAL AMMINE COMPLEXESThe metal ammine complexes involve predominantly sigma bonding. However, a n-type overlap for trans [Pt(NHa)2CI2] has been postulated * With Louis J. Basile. 191J. R. Ferraro, Low-Frequency Vibrations of Inorganic and Coordination Compounds

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Metal-Nitrogen Vibrations

Basile¹

1971

Low-Frequency Vibrations of Inorganic and Coordination Compounds

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Alkali‐Phosphorverbindungen und ihr reaktives Verhalten. LXIII. 8‐Chinolylphosphine

Issleib¹,

Haftendorn²

1970

Zeitschrift anorg allge chemie

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Es werden Darstellung und Reaktionsverhalten P‐substitutierter 8‐Chinolylphosphine beschrieben. Während KP(C6H5)2 mit 8‐Chlorchinolin das 8‐Chinolyl‐diphenylphosphin liefert, reagieren LiP(C2H5)2 bzw. LiP(C6H11)2 sowie Alkali‐phosphide MPHR mit 8‐Halogenchinolinen zu Chinolin und R2PPR2 bzw. (RP)n. 8‐Chinolyl‐diorgano‐ und ‐aminophosphine bilden sich aber eindeutig aus 8‐Lithium‐chinolyl und R2PCl, RN(CH3)2PCl bzw. [N(CH3)2]2PCl. Aus 8‐Chinolyl‐aminophosphinen lassen sich die entsprechenden 8‐Chinolyl‐phosphinig‐, ‐phosphonigsäureester und ‐phosphine gewinnen. Die dargestellten Verbindungen werden durch übliche Reaktionen des dreibindigen Phosphors näher charakterisiert.

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Lanthanide complexes with 8-dimthylarsinoquinoline

Dari

Kingston

1974

Inorganic and Nuclear Chemistry Letters

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Infrared spectra of complexes of 8-aminoquinoline with lanthanide halides

Cited by 12 publications

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Metal-Nitrogen Vibrations

Metal-Nitrogen Vibrations

Alkali‐Phosphorverbindungen und ihr reaktives Verhalten. LXIII. 8‐Chinolylphosphine

Lanthanide complexes with 8-dimthylarsinoquinoline

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