Characterization of o-phenanthroline and 2,2'-bipyridine complexes by laser mass spectrometry

Balasanmugam, K.; Day, Richard E.; Hercules, David M.

doi:10.1021/ic00220a012

Cited by 22 publications

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“…These types of ions were not observed for compounds such as [Fe(~hen)~-(CN)z], [Ru(bpy)31Clz, [Co(phen)31C12, and [Ni(bpy)31 X2, where X = C1-, Br-, I-, and SCN-. These observations indicate that these oxygen-containing species are probably produced either by oxidation of the complexes by the oxidizing anions such as C L 0 4 or NO3-, or by internal decomposition of the complexes as suggested in LMS studies of the same complexes (6).…”

Section: Other Ions Of Interestmentioning

confidence: 58%

“…FAB mass spectral data with those of LMS, which have been Mass spectrometry has been widely applied to the characterpreviously reported, (6) is also discussed in the appropriate ization of coordination compounds (1)(2)(3)(4)(5)(6). The interest in coorplaces.…”

Section: Introductionmentioning

confidence: 99%

“…dination and related compounds stems from their use in the Experimental fields of catalysis (7)(8)(9), chemical analysis (7)(8)(9), medicine were purchased mass spectrometry has been limited, (2,15) because many of from G. Frederic Smith Chemical Co., and used without further purification. Other complexes given in Table 1 were synthesized using them are involatile and thermally labile, although even convenstandard methods (6).…”

Section: Introductionmentioning

confidence: 99%

“…Argon was used as the (3), fast atom bombardment (FAB) (4,16,17), secondary ion bombarding gas with atom gun (Ion Tech) energies of 6-8 kV and a gun mass spectrometry (SIMS) (5,18), and laser mass spectrometry current of 1 mA. The operating pressure of the ion source was typically (LMS) (6,19), have been used successfully for the characteriza--1~' Torr (1 Tom = 133.3 Pa), and the positive secondary ions tion of coordination compounds.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of metal complexes of 1,10-phenanthroline, 2,2′-bipyridine, and their derivatives by fast atom bombardment mass spectrometry

Miller¹,

Balasanmugam²

1989

Can. J. Chem.

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A series of 1,lO-phenanthroline (phen), 5-nitro-1,lO-phenanthroline (5-NO2-phen), 2,9-dimethyl-1,lO-phenanthroline (dmp), 2,2'-bipyridine (bpy), and 4,4'-dimethy-2,2'-bipyridine (dmb) metal complexes has been characterized using fast atom bombardment mass spectrometry (FAB MS). Intact cations are observed in the positive ion FAB mass spectra of all tetracoordin- Une comparaison des rksultats obtenus en FAB avec ceux obtenus en spectromktrie du masse au laser (LMS) dkmontre qu'ils sont comparables, mCme si les processus de rkduction sont plus importants en FAB. En LMS, on observe toujours un cation intact alors qu'en FAB les rksultats ne sont pas consistants. Most cle's : spectroscopie de masse en FAB, complexes de la phknanthroline, complexes de la bipyridine, spectromktrie de masse par dksorption au laser.[Traduit par la revue]

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Section: Other Ions Of Interestmentioning

confidence: 58%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Characterization of metal complexes of 1,10-phenanthroline, 2,2′-bipyridine, and their derivatives by fast atom bombardment mass spectrometry

Miller¹,

Balasanmugam²

1989

Can. J. Chem.

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“…9 Generally, these ionization techniques produce only singly charged ions for coordination com-pounds. However, it has been reported that doubly charged ions of a ruthenium-bidentate ligand complex are observed in FAB spectra.…”

Section: Introductionmentioning

confidence: 99%

Multiply charged ions of ruthenium(II), rhodium(III) and cobalt(III) complexes in electrospray ionization mass spectrometry

Arakawa¹,

Matsuo²,

Ito³

et al. 1994

Org. Mass Spectrom.

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Multiply charged ions from electrospray ionization (ESI) were observed for ruthenium-bidentate ligand complexes, such as IRuL,B)X, and I(RuL,),B]X,, where L is 2,2'-bipyridine, B are tetradentate ligands of 2,2'-bis(2"-pyridy1)bibenzimidazole and 2,6-bis(2'-pyridyl)benzodiimidazole, bidentate ligand of 2-(2'-pyridyl)benzimidazole and related compounds and X is C10,-or CI-. ESI mass spectra showed a simple mass pattern for easy structural assignment and detecting impurities. The mass spectra for binuclear complexes provide a charge state distribution ranging from 4 + to 2 + for Ru(I1)-Ru(I1) compounds and 5 + to 2 + for Ru(I1)-Rh(II1) compounds. It was found that different multiply charged ions are generated by loss of counterions and by protonation/deprotonation at the proton site of ligands B. The abundances of these ions are qualitatively explained in terms of the acidity of metal complexes depending on the bridging ligand structures and the charge of the metal ions. Ions produced by removal of ligands were hardly observed.

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Quadrupole ion trap studies of the structure and reactivity of transition metal ion pair complexes

Vachet

Callahan

2000

J. Mass Spectrom.

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Ion pairs are common species observed in the electrospray mass spectra of transition metal coordination complexes. To understand the nature of these ion pairs, a systematic study of the gas‐phase chemistry of these species using ion–molecule reactions and collision‐induced dissociation (CID) was carried out. Ion pair complexes of the type MLnX+ (where M is Mn(II), Fe(II), Co(II), Ni(II), Cu(II) or Zn(II), L is 1,10‐phenanthroline, 2,2′‐bipyridine, ethylenediamine, diethylenetriamine or 1,4,8,11‐tetraazacyclotetradecane and X is Cl−, NO3−, acetylacetonate, ClO4−, acetate or SCN−) were studied. Ion–molecule reactions can distinguish whether the counterion in an ion pair is an inner‐ or outer‐sphere ligand and can determine the coordination mode of the counterion. In addition, CID and ion–molecule reactions reveal some interesting chemistry of these complexes and unique coordination modes for some of the anions studied here were inferred from the ion–molecule reactions. For example, the thiocyanate ion is found to coordinate in a bidentate fashion in Zn(II) and Ni(II) complexes, contrasting behavior typically observed in solution. Also, certain Co(II) and Fe(II) ion pair complexes undergo oxidation reactions in which species such as dioxygen and nitric oxide from the counterions ClO4− and NO3− are transferred to the Co(II) and Fe(II) complexes, showing the inherent affinity of these metals for these molecules. These complexes were also studied by ion–molecule reactions and CID. Dioxygen in complexes formed by CID is demonstrated to be bidentate, suggesting the formation of a peroxo ligand with concurrent oxidation of the metal. Copyright © 2000 John Wiley & Sons, Ltd.

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Characterization of o-phenanthroline and 2,2'-bipyridine complexes by laser mass spectrometry

Cited by 22 publications

References 0 publications

Characterization of metal complexes of 1,10-phenanthroline, 2,2′-bipyridine, and their derivatives by fast atom bombardment mass spectrometry

Characterization of metal complexes of 1,10-phenanthroline, 2,2′-bipyridine, and their derivatives by fast atom bombardment mass spectrometry

Multiply charged ions of ruthenium(II), rhodium(III) and cobalt(III) complexes in electrospray ionization mass spectrometry

Quadrupole ion trap studies of the structure and reactivity of transition metal ion pair complexes

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