Thallium dicyanoaurate(I), Tl[Au(CN)2], and cesium dicyanoaurate(I), Cs[Au(CN)2]

Blom, Nils; Lüdi, A.; Bürgi, Hans Beat; Tichý, K.

doi:10.1107/s0108270184009471

Cited by 34 publications

(38 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In crystals of the alkali salts (M = Na, K, Rb,Cs), the anions are packed in sheets with all gold atoms in ac ommon plane and with the cyanide groups extending roughly perpendicular from this plane above and below.T he assembly pattern depends on the size of the counterion, and the Au•••Au contacts vary across as mall range around an average of 3.33 . [91][92][93][94][95][96] Figure 1s hows an idealized structure of a{ [Au-(CN) 2 ] n } nÀ sheet with the most common hexagonal array of gold atoms.Asanexample of adistorted variant, in crystals of Rb[Au(CN) 2 ], the gold atoms are arranged in ap lane composed of four-a nd eight-membered rings. [96] Already in many publications of early structural work it has repeatedly been assumed that "there may be significant bonding interactions among the gold atoms in these solids".…”

Section: The Case Of the Dicyanoaurate(i) Anionmentioning

confidence: 99%

Excimer and Exciplex Formation in Gold(I) Complexes Preconditioned by Aurophilic Interactions

Schmidbaur

Raubenheimer

2020

Angew Chem Int Ed

View full text Add to dashboard Cite

Excimers and exciplexes are defined as assemblies of atoms or molecules A/A′ where interatomic/intermolecular bonding appears only in excited states such as [A2]* (for excimers) and [AA′]* (for exciplexes). Their formation has become widely known because of their role in gas‐phase laser technologies, but their significance in general chemistry terms has been given little attention. Recent investigations in gold chemistry have opened up a new field of excimer and exciplex chemistry that relies largely on the preorganization of gold(I) compounds (electronic configuration AuI(5d10)) through aurophilic contacts. In the corresponding excimers, a new type of Au⋅⋅⋅Au bonding arises, with bond energies and lengths approaching those of ground‐state Au−Au bonds between metal atoms in the Au0(5d106s1) and AuII(5d9) configurations. Excimer formation gives rise to a broad range of photophysical effects, for which some of the relaxation dynamics have recently been clarified. Excimers have also been shown to play an important role in photoredox binuclear gold catalysis.

show abstract

Section: The Case Of the Dicyanoaurate(i) Anionmentioning

confidence: 99%

Excimer and Exciplex Formation in Gold(I) Complexes Preconditioned by Aurophilic Interactions

Schmidbaur

Raubenheimer

2020

Angew Chem Int Ed

View full text Add to dashboard Cite

show abstract

“…Au-CN distances in the TlAu(CN) 2 and RbAu(CN) 2 structures are equal to 1.971 Å (Blom et al, 1984) and 1.98 Å (Schubert & Range, 1990), respectively. Using the calculation procedure as in the MCN case, from these distances we obtain r(Au + ) = 0.97 Å and 0.98 Å for CN = 6.…”

Section: Methodsmentioning

confidence: 98%

Revised radii of the univalent Cu, Ag, Au and Tl cations

Бацанов

2019

Acta Crystallogr Sect B

View full text Add to dashboard Cite

are determined by the additive method from interatomic distances in molecular and/or crystalline halides, oxides, chalcogenides and cyanides with different coordinations of atoms, and then recalculated for the 6-coordination number. The averaged (from 74 structures) values of revised radii are equal to r(Cu + ) = 0.74 Å , r(Ag + ) = 0.99 Å , r(Au + ) = 0.92 Å , r(Tl + ) = 1.22 Å , which are consistent with radii calculated from direct cation-cation contacts in ultimately compressed metals.research papers 40 Stepan S. Batsanov Revised radii of the univalent Cu, Ag, Au and Tl cations

show abstract

“…Therefore, cyanometallates can easily form coordination polymers with transition-metal cations and the presence of cyanide can be readily determined with the C≡N vibrational stretch in the infrared and Raman spectra [9,10]. Many researchers have focused on octahedral [M(CN)6] nbut less have focused on square-planar [M(CN)4] nbuilding blocks [11][12][13]. The square-planar building blocks are used extensively in the synthesis of Hofmann-type complexes.…”

Section: Introductionmentioning

confidence: 99%

Vibrational Spectroscopic and Thermal Investigations of the Cyano-Bridged Polymeric Complexes With 3-Aminomethylpyridine

Karaağaç¹

2019

Eskişehir Technical University Journal of Science and Technology a - Applied Sciences and Engineering

View full text Add to dashboard Cite

New cyano-bridged polymeric complexes formulated as [Co(H2O)(ampy)Ni(CN)4]•H2O and [Ni(ampy)2Ni(CN)4]•H2O (ampy = 3-aminomethylpyridine: abbreviated henceforth as Co-Ni-ampy and Ni-Ni-ampy) have been obtained in powder form and characterized by vibrational (infrared and Raman) spectroscopy, thermal and elemental analyses. In previous study, structure of complex [Cd(NH3)(ampy)Ni(CN)4]n (Cd-Ni-ampy) was determined by single crystal X-ray diffraction methods. In this complex, the coordination environment of the Cd(II) ions are distorted octahedral geometry, whereas around the Ni(II) center is pyramidal. The spectral features suggest that Cd-Ni-ampy with Co-Ni-ampy are similar to each other and the ampy ligand is coordinated to metal ions as bidentate ligand. In addition, complex Ni-Ni-ampy is similar in structure to the Hofmann type complexes and its structure consists of polymeric layers of │Ni-Ni(CN)4│∞ with the ampy ligand bounded to the nickel(II) atom. Thermal stabilities and decomposition products of the complexes were investigated using TG, DTG and DTA curves in the temperature range of 30-700 °C in the static air atmosphere.

show abstract

Thallium dicyanoaurate(I), Tl[Au(CN)2], and cesium dicyanoaurate(I), Cs[Au(CN)2]

Cited by 34 publications

References 2 publications

Excimer and Exciplex Formation in Gold(I) Complexes Preconditioned by Aurophilic Interactions

Excimer and Exciplex Formation in Gold(I) Complexes Preconditioned by Aurophilic Interactions

Revised radii of the univalent Cu, Ag, Au and Tl cations

Vibrational Spectroscopic and Thermal Investigations of the Cyano-Bridged Polymeric Complexes With 3-Aminomethylpyridine

Contact Info

Product

Resources

About