Ligands Containing C N- Groups

Quinoline (= Q) ligand modes were observed and assigned (using a normal coordinate analysis) from the IR spectra of M(Q)2Ni(CN)4, where M = Mn, Fe, Co or Zn.i 2 

Oxidation state and spin state marker bands were identified in the resonance Raman spectrum of cytochrome P450 Biol, showing the presence of Fe(III) in a mixture of high- and low-spin forms. A novel type of sample cell enabled a UV resonance Raman spectrum to be obtained (with 244 nm excitation) for bovine cytochrome c oxidase. Several ligand bands were assigned, including a feature at 1656 cm due to the linoleolyl side chain of the phospholipids.  

FTIR difference spectroscopy was used to follow conformational changes in the mixed valence form of the cytochrome c oxidase from P. denitrificansf SERRS data for fiavocytochrome bi substituted by cysteine at His66 includes a band at 1345 cm indicative of cysteine-haem-iron ligation.  

The resonance Raman spectrum of the class III ascorbate peroxidase isoenzyme II from tea leaves was consistent with an unusual five-coordinate quantum mechanically mixed-spin haem. Porphyrin-ring oxidation state marker bands were assigned for a range of Ru (Por)L2 complexes, where Por = TPP and substituted derivatives, L = PhNO. IR spectroscopy was used to probe the coupling of ground state molecular vibrations with low-energy electronic transitions of Ru(III, II) porphyrin dimer species.  

The IR spectrum of [(bipy)20s(mbca)] , where mbca = 4 -methyl-2,2 -bi- 

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Ligands Containing > C=N Groups. - The Raman spectrum of chlorophyll d from Acaryochloris marina has been reported, and ligand modes assigned using DFT calculations.207... 

Figure 2.5.2 Most common coordination environments for tin macrocycles, cages and coordination polymers (a) monoorganotin (b) diorganotin (c) triorganotin derivatives. R = organic group, X = ligand with functional groups containing C, N, O, S, etc.

Using Pd(TPPTS)3 as a catalyst, 5-hydroxymethylfurfural could be carbonylated chemoselectively in water to yield 5-formylfuran-2-acetic acid. Replacement of TPPTS by ligands containing fewer S03Na groups (TPPDS, TPPMS, Id, n = 1) gives rise to a dramatic drop in catalytical activity [61]. The Pd(OAc)2/TPPTS mixture widely applied as catalyst for sp—sp and sp2—sp C—C coupling reactions without a Cu(I) promoter spontaneously affords a palladium(O) complex Pd(TPPTS) ... 

Recently, deep blue Fe(AP)2 (NCS)2 (AP=2,2 -azop5nidine) has been prepared (777). This is the first example of a colored iron(II) complex derived from a ligand containing the N=N—C=N grouping. Finally, orange-red Fe(CO)8N4(CH3)2 (718) is likely to contain the RN—N=N—NR grouping coordinated to the central metal. I I... 

A number of [PhsSnflV)] complexes formed with ligands containing -OH, C = 0, or -COOH group(s) and aromatic N donor atom have been prepared. The binding sites of the ligands were identified by FT-IR... 

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