Infrared Absorption Studies of Inorganic Coördination Complexes. XX. Cobalt(III) Ammine Complexes Containing Some Coördinated Anions<sup>1</sup>

Bertin, Erwan; Penland, R. B.; Mizushima, Shôji; Curran, Columba; Quagliano, J. V.

doi:10.1021/ja01524a003

Cited by 35 publications

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“…The bond distance for the short bonds, Pt(1)-Ag (1) or Pt(1A)-Ag(1A) = 2.8377(6) A ˚, is near to the sum of the metallic radii of Pt and Ag (2.83 A ˚), indicating the formation of a Pt-Ag dative bond; note that each bond is also supported by two secondary weak interactions of the Ag atom with the C atoms of the methyl ligands [C (12) or C (14)] that are coordinated to the Pt atom (dashed bonds in Fig. 4) with Ag-C distances of Ag(1)-C(12) = 3.000(7) A ˚and Ag(1)-C( 14 13 C NMR spectrum at d -11.9 and -7.9 ppm; the coupling 1 J PtC = 736 Hz for the methyl groups trans to sulfur was greater than the value 1 J PtC = 582 Hz for the methyl group trans to C atoms of carbene ligand. Electrospray ionization (ESI) mass spectrum (positive ions) of complex 2 shows a base peak at m/z 1022 (Fig.…”

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“…The IR spectrum of complex 3 displays a strong band at 1600 cm -1 , indicating that the carbonate ligand is bonded to the platinum atom as a bidentate ligand. 13 Complete structural characterization of 3 as a carbonate complex was achieved by X-ray crystallographic analysis. The crystals of 3 suitable for X-ray crystallographic analyses were obtained by slow evaporation of an acetone solution of complex 1.…”

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confidence: 99%

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Organoplatinum(ii) complexes containing chelating or bridging bis(N-heterocyclic carbene) ligands: formation of a platinum(ii) carbonate complex by aerial CO2 fixation

et al. 2011

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ExperimentalThe 1 H, 13 C and 195 Pt NMR spectra were recorded on a Bruker Avance DRX 500-MHz spectrometer. The operating frequencies and references, respectively, are shown in parentheses as follows:1 H (500MHz, tetramethylsilane, SiMe 4 ), 13 C ((125 MHz, TMS), and 195 Pt (107 MHz, aqueous Na 2 PtCl 4 ). The chemical shifts and coupling constants are in parts per million and hertz, respectively. Electrospray ion mass spectra (ESI-MS) were recorded on a Hewlett-Packard Series 1100 spectrometer. 1-(tert-Butyl)imidazole and 1-(isopropyl)-imidazole were synthesized according to literature procedures. The non-hydrogen atoms were refined anisotropically. All of the hydrogen atoms were positioned geometrically and refined with the riding model approximation, with Uiso(H) = 1.2 or 1.5 Ueq(C). All calculations were carried out using the PLATON [Spek, A. L. Acta Cryst. 1990, A46, C34. PLATON, A Multipurpose Crystallographic Tool, Utrecht University, Utrecht, The Netherlands ]. For the molecular graphics the program SHELXTL was used. For complex 2, a series of similarity and same restraints were applied to model the disordered acetone molecule. Bis(imidazolium) SaltsThe 1-alkyl-imidazoles and dibromomethane(1/2 equiv) were heated neat overnight in a pressure tube at 120 °C. The resulting solid was triturated with CH 2 Cl 2 and washed with diethyl ether. Preparation of [PtMe 2Ag , 24.4; H, 4.1; N, 6; Found: C, 24.6; H, 4; N, 6.2

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Organoplatinum(ii) complexes containing chelating or bridging bis(N-heterocyclic carbene) ligands: formation of a platinum(ii) carbonate complex by aerial CO2 fixation

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“…[1][2][3][4] The spectra of these co-ordinated oxyanions have been found to differ from those of the free anions, because the co-ordination usually causes a change in the symmetry and structure of the ligands. For the nitrato, carbonato and nitrito complexes, empirical assignments of the observed absorption bands have been carried out, but not for the sulfato complexes.…”

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Infrared Spectroscopic Studies of Acido-pentammine Cobalt(III) Complexes, Sulfato, Nitrito, Nitrato and Carbonato Complexes

Tanaka¹,

Sugi²,

Fujita³

1964

Bulletin of the Chemical Society of Japan

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The infrared spectra of twelve acido-pentammine cobalt(III) complexes have been obtained in the range between 5000 and 250 cm−1, and the vibrational frequencies of the co-ordinated oxyanions have been assigned from the normal co-ordinate treatment based on Wilson’s method and on the Urey-Bradley potential field. The results of the calculation show that the co-ordination effects on these oxyanions are fairly large and that the bonds between cobalt and oxygen atoms have a considerably covalent character.

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“…These observations indicate that the UO2 moiety is virtually linear [12,13]. The VSA-uranyl nitrate polymer complex show no strong absorption band near 1380 cm -1 indicating the absence of uncoordinated nitrate ion, but exhibit strong bands around 1525 and 1290 cm -1 assignable to the vl (NO2 symmetric stretching) and v4 (NO2 asymmetric stretching) vibrations, respectively [14,15]. Hence the nitrato group is coordinated as a unidentate [16].…”

Section: Characterization Of the Polymer Complexesmentioning

confidence: 92%

Polymer complexes. XVI

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El-Sonbatil

El-Bindary

et al. 1990

Journal of Thermal Analysis

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Thermal stability of poly(5-vinylsalicylidene) aniline homopolymer and polymer complexes of 5-vinylsalicylidene aniline with some transition metal salts Polymer complexes of 5-vinylsalieylidene aniline with some transition metal salts were prepared and eharacterised by elemental analyses, IR, electronic spectroscopy and magnetic moment measurements. Thermal stabilities of the polymer complexes were compared with poly(5-vinylsalicylidene) aniline homopolymer, and the order of stabilities of the complexes was given. The activation energies of the polymer complexes were calculated.Polymer complexes have been given a great deal of attention in the last few years [1-3]; their structures and thermal stability have been of particular interest [4][5][6]. Recently, we dealt with polymer complexes derived from 5-vinyl salicylaldehyde and 5-vinyl salieylidene anthranilie acid with some transition metal salts [7,8]. In the present investigation, polymer complexes of 5-vinylsalicylidene aniline with some transition metal salts were prepared and characterized. The thermal stabilities of the formed polymer complexes were studied and the activation energies of the degradation were calculated.

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Infrared Absorption Studies of Inorganic Coördination Complexes. XX. Cobalt(III) Ammine Complexes Containing Some Coördinated Anions¹

Cited by 35 publications

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Organoplatinum(ii) complexes containing chelating or bridging bis(N-heterocyclic carbene) ligands: formation of a platinum(ii) carbonate complex by aerial CO2 fixation

Organoplatinum(ii) complexes containing chelating or bridging bis(N-heterocyclic carbene) ligands: formation of a platinum(ii) carbonate complex by aerial CO2 fixation

Infrared Spectroscopic Studies of Acido-pentammine Cobalt(III) Complexes, Sulfato, Nitrito, Nitrato and Carbonato Complexes

Polymer complexes. XVI

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Infrared Absorption Studies of Inorganic Coördination Complexes. XX. Cobalt(III) Ammine Complexes Containing Some Coördinated Anions1

Cited by 35 publications

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Organoplatinum(ii) complexes containing chelating or bridging bis(N-heterocyclic carbene) ligands: formation of a platinum(ii) carbonate complex by aerial CO2 fixation

Organoplatinum(ii) complexes containing chelating or bridging bis(N-heterocyclic carbene) ligands: formation of a platinum(ii) carbonate complex by aerial CO2 fixation

Infrared Spectroscopic Studies of Acido-pentammine Cobalt(III) Complexes, Sulfato, Nitrito, Nitrato and Carbonato Complexes

Polymer complexes. XVI

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Infrared Absorption Studies of Inorganic Coördination Complexes. XX. Cobalt(III) Ammine Complexes Containing Some Coördinated Anions¹