Richard Attila Varga

Dr. Richard Attila Varga

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Research Focus & Metrics

Academic Career Length

27Years (2000-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 May 2009 in Journal of Inorganic Biochemistry
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Journal Article
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DKDimitra Kovala-Demertzi
Dimitra Kovala-Demertzi
VDVaso Dokorou
Vaso Dokorou
APAlexandra Primikyri
Alexandra Primikyri
RVRichard Attila Varga
Richard Attila Varga
Cristian SilvestruCristian Silvestru
Cristian Silvestru
MDMavroudis A. Demertzis
Mavroudis A. Demertzis

27 February 2008 in Dalton Transactions
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Journal Article
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HBHans J. Breunig
Hans J. Breunig
LKLucia Königsmann
Lucia Königsmann
ELEnno Lork
Enno Lork
MNMihai Nema
Mihai Nema
NPNicky Philipp
Nicky Philipp
RWRoxana Wagner
Roxana Wagner
R2BiOH (1) [R = 2-(Me2NCH2)C6H4] and (R2Bi)2O (2) are formed by hydrolysis of R2BiCl with KOH. Single crystals of 2 were obtained by air oxidation of (R2Bi)2. The reaction of R2BiCl and Na2CO3 leads to (R2Bi)2CO3 (3). 3 is also formed by the absorption of CO2 from the air in solutions of 1 or 2 in diethyl ether or toluene. (R2Bi)2S (4) is obtained from R2BiCl and Na2S or from (R2Bi)2 and S8. Exchange reactions between R2BiCl and KBr or NaI give R2BiX [X = Br (5), I (6)]. The reaction of RBiCl2 (7) with Na2S and [W(CO)5(THF)] gives cyclo-(RBiS)2[W(CO)5]2 (8). cyclo-(R′BiS)2 (9) [R′ = 2,6-(Me2NCH2)2C6H3] is formed by reaction of R′BiCl2 and Na2S. The structures of 1–9 were determined by single-crystal X-ray diffraction.

1 March 2001 in Journal of Organometallic Chemistry
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RVRichard Attila Varga
Richard Attila Varga
MSMarkus Schuermann
Markus Schuermann
Cristian SilvestruCristian Silvestru
Cristian Silvestru

26 October 2010 in Dalton Transactions
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Journal Article
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HBHans J. Breunig
Hans J. Breunig
MNMihai G. Nema
Mihai G. Nema
Cristian SilvestruCristian Silvestru
Cristian Silvestru
ASAlbert Soran
Albert Soran
RVRichard Attila Varga
Richard Attila Varga
The reaction of RBiCl2 (1) [R = 2,6-(Me2NCH2)2C6H3] with Na2CO3 or Ag2SO4 (1 : 1 molar ratio) gave RBiCO3 (2) and RBiSO4 (3), respectively. RBi(NO3)2 (4) was obtained from RBiCl2 and AgNO3 (1 : 2 molar ratio). The ionic complex [R2Bi][W(CO)5Cl] (6) was obtained from R2BiCl (5) and W(CO)5(THF), following an unusual chlorine transfer from bismuth to tungsten. Compounds 2–4 are partially soluble in water. The molecular structures of 2·0.5CH2Cl2, 3, 4·H2O and 6 were established by single-crystal X-ray diffraction. The carbonate 2 and the sulfate 3 exhibit a polymeric structure based on bridging oxo anions, while for the compound 4 dimer associations are formed, with both bridging and terminal nitrate anions. Dimer associations, based on weak Cl⋯H interactions between the cation and the anion, were found in the crystal of 6.


30 January 2008 in European Journal of Inorganic Chemistry
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RVRichard Attila Varga
Richard Attila Varga
KJKlaus Jurkschat
Klaus Jurkschat
Cristian SilvestruCristian Silvestru
Cristian Silvestru