INFRARED SPECTRA OF GASEOUS AlF3, LiAlF4, AND NaAlF41

McCory, L. D.; Paule, Robert C.; Margrave, John L.

doi:10.1021/j100799a035

Cited by 35 publications

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“…For HAlFCl, force constants f (Al−H), f (Al−F), and f (Al−Cl) of 204, 476, and 327 N m -1 were derived. The value for f (Al−F) is in good agreement with those derived for f (Al−F) of FAlO (501 N m -1 ), AlF 3 (487 N m -1 ), and FAl(O 2 ) 2 (493 N m -1 ) …”

Section: Discussionsupporting

confidence: 85%

Matrix Reactivity of AlF and AlCl in the Presence of HCl and HBr: Generation and Characterization of the New Al(III) Hydrides HAlFCl, HAlFBr, and HAlClBr and the Monomeric Mixed Al(III) Halides AlX₂Y (X, Y = F, Cl, or Br)

et al. 2002

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The spontaneous and photolytically induced reactions of AlF and AlCl in the presence of HCl and HBr in solid argon matrices were followed and the products identified and characterized by means of IR spectroscopy. Quantum mechanical calculations allow for a further evaluation of the properties of the reaction products. These are the adducts AlF.HCl, AlF.HBr, and AlCl.HBr, representing the products of spontaneous reactions, and the trivalent Al(III) hydrides HAlFCl, HAlFBr, and HAlClBr, which were formed upon photoactivation of these complexes. All three hydrides are planar molecules (C(s)() symmetry) with bond angles in agreement with the predictions of the VSEPR theory. In addition, the mixed halides AlFCl(2), AlFBr(2), and AlClBr(2) were formed upon photolysis. The bisadducts AlF.(HCl)(2) and AlF.(HBr)(2) are likely to be the precursors to these species.

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Section: Discussionsupporting

confidence: 85%

Matrix Reactivity of AlF and AlCl in the Presence of HCl and HBr: Generation and Characterization of the New Al(III) Hydrides HAlFCl, HAlFBr, and HAlClBr and the Monomeric Mixed Al(III) Halides AlX₂Y (X, Y = F, Cl, or Br)

et al. 2002

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“…The value obtained is in satisfactory agreement with the value of 945 cm-1 reported by McCory, Paule, and Margrave. 6 The assignment of the other (1) This work was supported by the U. S. Army Research Office with funds provided by the Advanced Research Projects Agency.…”

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confidence: 99%

Sublimation of aluminum trifluoride and the infrared spectrum of gaseous aluminum fluoride

Buechler¹,

Marram²,

Stauffer³

1967

J. Phys. Chem.

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Notes 4139 to BTMA, has a higher moment although deviation from a smooth curve in its susceptibility-temperature characteristic may reflect relatively large changes in the effective ligand field with temperature. Indeed, the increasing divergence of the susceptibilities of all the compounds studied with increasing temperature suggest that the ligand field strength and/or symmetry is markedly temperature dependent. In view of the complexity of the crystal structure, this behavior is not surprising.

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“…6 The splitting in the absorption is most likely as a result of different trapping sites for the molecules, although the possibility of removal of degeneracy due to matrix environment or a molecule perturbed by a neighboring species cannot be ruled out. A subsequent matrix study 9 has questioned the former assignment to AlF 3 , but the observation of gas phase AlF 3 at 945 or 935 cm -1 in two studies 50,51 supports the Snelson assignment. 6 Finally, the present method of forming AlF 3 avoids aggregation with undecomposed Al 2 F 6 as a complication in the spectra, and the good agreement with Snelson and a MP2 frequency 33 calculation (946 cm -1 ) reinforces this assignment to isolated AlF 3 in solid argon.…”

Section: Discussionmentioning

confidence: 97%

Laser-Evaporated Aluminum Atom Reactions with Halogen Molecules. Infrared Spectra of AlX_n (X = F, Cl, Br, I; n = 1−3) in Solid Argon

et al. 1996

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Reactions of laser-evaporated aluminum atoms with molecular fluorine, chlorine, bromine, and iodine in excess argon during condensation onto a CsI window at 11 ( 1 K produced the AlX n (X ) F, Cl, Br, I and n ) 1-3) and Al 2 X 6 molecules, which were characterized by infrared absorption spectroscopy. Low laser power favored the primary reaction product AlX and AlX 2 transient species over the more stable secondary reaction product AlX 3 molecules. Chlorine and bromine isotopic structures substantiated the molecular identifications and vibrational assignments. DFT calculations were done for the AlCl n and AlBr n series to support the vibrational assignments. Possible Al 2 Cl 4 structures were also explored by DFT calculations, and evidence is presented for a distorted Cl 2 AlCl 2 Al structure. The present study provides further evidence for transient aluminum dihalide radicals for the four halogens.

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INFRARED SPECTRA OF GASEOUS AlF₃, LiAlF₄, AND NaAlF₄¹

Cited by 35 publications

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Matrix Reactivity of AlF and AlCl in the Presence of HCl and HBr: Generation and Characterization of the New Al(III) Hydrides HAlFCl, HAlFBr, and HAlClBr and the Monomeric Mixed Al(III) Halides AlX₂Y (X, Y = F, Cl, or Br)

Matrix Reactivity of AlF and AlCl in the Presence of HCl and HBr: Generation and Characterization of the New Al(III) Hydrides HAlFCl, HAlFBr, and HAlClBr and the Monomeric Mixed Al(III) Halides AlX₂Y (X, Y = F, Cl, or Br)

Sublimation of aluminum trifluoride and the infrared spectrum of gaseous aluminum fluoride

Laser-Evaporated Aluminum Atom Reactions with Halogen Molecules. Infrared Spectra of AlX_n (X = F, Cl, Br, I; n = 1−3) in Solid Argon

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INFRARED SPECTRA OF GASEOUS AlF3, LiAlF4, AND NaAlF41

Cited by 35 publications

References 0 publications

Matrix Reactivity of AlF and AlCl in the Presence of HCl and HBr: Generation and Characterization of the New Al(III) Hydrides HAlFCl, HAlFBr, and HAlClBr and the Monomeric Mixed Al(III) Halides AlX2Y (X, Y = F, Cl, or Br)

Matrix Reactivity of AlF and AlCl in the Presence of HCl and HBr: Generation and Characterization of the New Al(III) Hydrides HAlFCl, HAlFBr, and HAlClBr and the Monomeric Mixed Al(III) Halides AlX2Y (X, Y = F, Cl, or Br)

Sublimation of aluminum trifluoride and the infrared spectrum of gaseous aluminum fluoride

Laser-Evaporated Aluminum Atom Reactions with Halogen Molecules. Infrared Spectra of AlXn (X = F, Cl, Br, I; n = 1−3) in Solid Argon

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INFRARED SPECTRA OF GASEOUS AlF₃, LiAlF₄, AND NaAlF₄¹

Matrix Reactivity of AlF and AlCl in the Presence of HCl and HBr: Generation and Characterization of the New Al(III) Hydrides HAlFCl, HAlFBr, and HAlClBr and the Monomeric Mixed Al(III) Halides AlX₂Y (X, Y = F, Cl, or Br)

Matrix Reactivity of AlF and AlCl in the Presence of HCl and HBr: Generation and Characterization of the New Al(III) Hydrides HAlFCl, HAlFBr, and HAlClBr and the Monomeric Mixed Al(III) Halides AlX₂Y (X, Y = F, Cl, or Br)

Laser-Evaporated Aluminum Atom Reactions with Halogen Molecules. Infrared Spectra of AlX_n (X = F, Cl, Br, I; n = 1−3) in Solid Argon