Papers by Johann Eichbichler
Chemischer Informationsdienst, 1982
ChemInform Abstract Die stabilen Titelverbindungen (III) werden durch Mercurierung von Diphenylph... more ChemInform Abstract Die stabilen Titelverbindungen (III) werden durch Mercurierung von Diphenylphosphin-pentacarbonyl-Mo,-Woder-Cr (I) mit dem Hg(II)-disilylamid (II) dargestellt und durch "P-und '99Hg-NMR-sowie massenspektroskopische Daten charakterisiert. Die Werte der Hg-P-Kopplungskonstanten sind die niedrigsten, die jemals für Hg-P-Bindungen beobachtet wurden.
Chemischer Informationsdienst, 1982
Chemischer Informationsdienst, 1984
Chemischer Informationsdienst, 1981
Journal of the Chemical Society, Dalton Transactions, 1982
Journal of Inorganic and Nuclear Chemistry, 1981
Abstract [(t-C4H9)2P(O)]2Hg (1), containing mercury-phosphorus bonds, was prepared from the phosp... more Abstract [(t-C4H9)2P(O)]2Hg (1), containing mercury-phosphorus bonds, was prepared from the phosphine oxide and Hg(OAc)2. 1 reacts with X2 (X Br, I) to form (t-C4H9)2P(O)X and with HgX2 (X Cl, Br, I, SCN, CN, C6H5 and OAc) yielding the mixed mercury compounds (t-C4H9)2P(O)HgX. The new compounds were characterized by 1H, 13C, 31P and 199Hg NMR and MS.
Journal of Inorganic and Nuclear Chemistry, 1981
Inorganic and Nuclear Chemistry Letters, 1981
Abstract At low temperatures (EtO) 2 P(O)HgY (Y = OAc,O 3 SCF 3 ,Cl,Br,I,S 2 CNEt 2 ,S 2 P(OEt) 2... more Abstract At low temperatures (EtO) 2 P(O)HgY (Y = OAc,O 3 SCF 3 ,Cl,Br,I,S 2 CNEt 2 ,S 2 P(OEt) 2 , 2,5-pyrrolidinedionato-N, and (EtO) 2 P(O)) form coordination compounds (EtO) 2 P(O)c HgY(PR 3 ) n (R = n-Bu, Ph; n = 1–3 depending on Y); 31 P and 199 Hg NMR data are reported.
J. Chem. Soc., Chem. Commun., 1982
Transition Metal Chemistry, 1981
Journal of Organometallic Chemistry, 1983
Abstract The reaction of HgX 2 (X = O 3 SCF 3 , 1 2 SO 4 , OAc) and dicyclohexylphosphine leads t... more Abstract The reaction of HgX 2 (X = O 3 SCF 3 , 1 2 SO 4 , OAc) and dicyclohexylphosphine leads to phosphido-bridged ring pentamers [Hg 5 (μ 2 -Cy 2 P) 5 X 5 ], X = O 3 SCF 3 , SO 4 H or tetramers [Hg 4 (μ 2 -Cy 2 P) 4 (OAc) 4 ] involving the ten-membered (Hg-P) 5 or eight-membered (Hg-P) 4 heterocycles. The ring size of these “macrocycles” is under thermodynamic control: The P-Hg-P bonding angles seem to depend on the ligating power of X. The ring structures were characterized by 31 P and 199 Hg NMR spectroscopy.
Journal of Organometallic Chemistry, 1997
The title complexes (M = Cr (1), Mo (2) and W (3)) are prepared in almost quantitative yield from... more The title complexes (M = Cr (1), Mo (2) and W (3)) are prepared in almost quantitative yield from [t-Bu2PHgN(SiMe3) 2] and [M(HPPh2)(CO) 5] or in 70% yield by synproportionation of [Hg(t-Bu2P) 2 ] and [Hg{(/~-PPh2)M(CO)5}2]. The compounds are crystalline, air-stable in the solid state but oxygen-sensitive in solution. The solid state structures of 1 and 3 consist of dimers containing four-membered (Hg-P) a rings with asymmetric phosphido bridges (252.2(2)pm and 268.9(2)pm for 1). The coordination geometry of Hg is almost planar. According to 31p and 199Hg NMR spectroscopy, the solution structure consists of dimers at 173K, whilst dissociation into monomers occurs at ambient temperature.
Journal of Organometallic Chemistry, 1982
Abstract The diastereomeric parts of HgP bonded Hg[P(O)(OBu n )ph] 2 give rise to different 199 ... more Abstract The diastereomeric parts of HgP bonded Hg[P(O)(OBu n )ph] 2 give rise to different 199 Hg NMR patterns. No enantiomeric discrimination occurs in the synthesis. Ligand redistribution reactions prevent the separation of the diastereomers.
Inorganica Chimica Acta, 1981
Inorganica Chimica Acta, 1980
Abstract Phosphonito-mercury compounds C 6 H 5 (n- C 4 H 9 O)PHgX, (X = C 6 H 5 (n-C 4 H 9 O)P(O)... more Abstract Phosphonito-mercury compounds C 6 H 5 (n- C 4 H 9 O)PHgX, (X = C 6 H 5 (n-C 4 H 9 O)P(O), Cl, Br, I, CN, C 6 H 5 , OAc, O 3 SCF 3 , SCN, SC 6 H 5 , SC 2 H 5 and 2,5-pyrrolidindionato-N) were prepared from the corresponding phosphinic acid ester with HgO or with HgO and HgX 2 . The new compounds are characterized by a HgP bond and decompose easily with fission of this bond. δ( 31 P), δ( 199 Hg) and 1 J( 31 P- 199 Hg) data are reported.
Chemische Berichte, 1984
Quecksilber(II)-halogenide bilden mit sekundaren Phosphanen Koordinationsverbindungen [HgX2(HPR2)... more Quecksilber(II)-halogenide bilden mit sekundaren Phosphanen Koordinationsverbindungen [HgX2(HPR2)n] (1 – 3, X = Cl, Br, I; R = tBu, Cyclohexyl; n = 1,2). Dehydrohalogenierung dieser Komplexe mit Et3N ergibt die unsymmetrischen Phosphinoquecksilberverbindungen XHgPR2 (4,5), die auch aus HgX2 und LiPR2 bzw. durch Synproportionierung von Hg(PR2)2 (R = tBu) und HgX2 zuganglich sind. IHgPCy2 (5c) koordiniert Iodid unter Bildung anionischer Komplexe mit (Hg – P)4-8-Ring-Strukturen 6, 7, in denen erstmals Kopplungskonstanten 2J(199Hg, 199Hg) gemessen werden (2435 – 2959 Hz). On the Reaction of Mercury(II) Halides with Secondary Phosphanes Mercury(II) halides form coordination compounds [HgX2(HPR2)n] (X = Cl, Br, I; R = tBu, cyclohexyl; n = 1,2). Deprotonation of these complexes with Et3N yields phosphinomercury compounds XHgPR2 which are also accessible from HgX2 and LiPR2 or Hg(PR2)2 (R = tBu) and HgX2. IHgPCy2 coordinates I– leading to anionic complexes with an eight-membered (Hg – P)4 ring structure. The first reported 2J(199Hg, 199Hg) coupling constants amount between 2435 and 2959 Hz in these rings.
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Papers by Johann Eichbichler