Bomerkung zur Arbeit yon E. Gaviola: „The efficiency of quenching collisions and the radius of the excited mercury atom“

1930 ◽  
Vol 60 (9-10) ◽  
pp. 716-717
Author(s):  
S. Mrozowski
Keyword(s):  
Mercury Atom

EFFECTS OF COMPLEXING ON THE HOMOGENEOUS REDUCTION OF MERCURIC SALTS IN AQUEOUS SOLUTION BY MOLECULAR HYDROGEN

1956 ◽  
Vol 34 (10) ◽  
pp. 1372-1381 ◽  
Author(s):  
G. J. Korinek ◽  
J. Halpern
Keyword(s):  
Aqueous Solution ◽  
Molecular Hydrogen ◽  
Hydrogen Molecule ◽  
Bimolecular Reaction ◽  
Mercury Atom ◽  
Complexing Agents ◽  
Mercuric Ion ◽  
Rate Determining Step ◽  
Homogeneous Reduction

The effects of various complexing agents on the homogeneous reduction of mercuric salts by molecular hydrogen in aqueous solution were determined. In all cases the kinetics suggest that the rate-determining step is a bimolecular reaction between a mercuric ion or complex and a hydrogen molecule, probably leading to the formation of an intermediate mercury atom. The reactivity of various mercuric complexes was found to decrease in the following order: HgSO4 > Hg++ > HgAc2, HgPr2 > HgCl2 > HgBr2 > Hg(EDA)2++. Addition of anions such as OH−, CO3=, Ac−, Pr−, and Cl−, in excess of the amounts required to form stable mercuric complexes, was found to increase the rate. An interpretation of these effects is given.

Formation of 1:1 and 1:2 exciplexes between excited mercury atom and amines in the liquid phase

1998 ◽  
Vol 94 (16) ◽  
pp. 2361-2365 ◽  
Author(s):  
Shunzo Yamamoto ◽  
Mitsuru Doi ◽  
Noriaki Ban
Keyword(s):  
Liquid Phase ◽  
Mercury Atom

Synthesis and crystal structures of bis(imidazolidine-2-thione-κS)bis(thiocyanato-κS)mercury(II) and bis(cyanido)bis(μ2-imidazolidine-2-thione-κS)mercury(II).Hg(CN)2

2017 ◽  
Vol 72 (9) ◽  
pp. 671-676 ◽  
Author(s):  
Muhammad Ashraf Shaheen ◽  
Muhammad Nawaz Tahir ◽  
Sarwat Sabir ◽  
Aneela Anwar ◽  
Anvarhusein A. Isab ◽  
...  
Keyword(s):  
Rotation Axis ◽  
Mercury Atom ◽  
Distorted Octahedral Geometry ◽  
Weakly Bound ◽  
X Ray ◽  
X Ray Crystallography ◽  
Hydrogen Bonding Interactions ◽  
Ir And Nmr Spectroscopy ◽  
Distorted Octahedral ◽  
Cyanide Ligands

AbstractTwo mercury(II) complexes containing imidazolidine-2-thione (Imt) and thiocyanate or cyanide ligands, [Hg(Imt)2(SCN)2] (1) and [Hg(Imt)2(CN)2].Hg(CN)2(2), have been prepared and characterized by IR and NMR spectroscopy and X-ray crystallography. In compound1, the mercury atom is located on a two-fold rotation axis and is coordinated to two thione sulfur atoms of imidazolidine-2-thione (Imt) and to two sulfur atoms of thiocyanate in a distorted tetrahedral mode with the S-Hg-S bond angles in the range of 98.96(3)–148.65(6)°. In2, the mercury atom is hexa-coordinated having a distorted octahedral geometry composed of two cyanide C atoms [Hg-C=2.055(5) Å] and four weakly bound thione S atoms of imidazolidine-2-thione (Imt) [Hg-S=3.1301(13) and 3.1280(13) Å]. One free Hg(CN)2molecule is also present in the crystal. In both complexes, the molecular structure is stabilized by N-H…N and N-H…S hydrogen bonding interactions.

Ultrahigh-resolution, frequency-resolved resonance fluorescence imaging with a monoisotopic mercury atom cell

1999 ◽  
Vol 86 (10) ◽  
pp. 5337-5341 ◽  
Author(s):  
A. A. Podshivalov ◽  
M. R. Shepard ◽  
O. I. Matveev ◽  
B. W. Smith ◽  
J. D. Winefordner
Keyword(s):  
Fluorescence Imaging ◽  
Mercury Atom ◽  
Resonance Fluorescence ◽  
Ultrahigh Resolution

T-VIOLATION AND THE SEARCH FOR A PERMANENT ELECTRIC DIPOLE MOMENT OF THE MERCURY ATOM

2009 ◽  
Author(s):  
M. D. SWALLOWS ◽  
W. C. GRIFFITH ◽  
T. H. LOFTUS ◽  
M. V. ROMALIS ◽  
B. R. HECKEL ◽  
...  
Keyword(s):  
Dipole Moment ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Mercury Atom ◽  
Permanent Electric Dipole Moment ◽  
T Violation

scholarly journals Kristallstruktur des Quecksilber(II)-Cryptats [Hg(cryptand 222)][{Hg(SCN)3}2] mit einem kettenförmigen Tri(thiocyanato)mercurat(II)-Anion / Crystal Structure of the Mercury(II) Cryptate [Hg(cryptand 222)][{Hg(SCN)3}2] Containing a Tri(thiocyanato)mercurate(II) Anion with a Chain Structure

1995 ◽  
Vol 50 (7) ◽  
pp. 993-996 ◽  
Author(s):  
Joachim Pickardt ◽  
Gill-Taik Gong ◽  
Isabella Hoffmeister
Keyword(s):  
Crystal Structure ◽  
Chain Structure ◽  
Mean Value ◽  
Mercury Atom ◽  
Space Group ◽  
A Chain ◽  
Polymeric Anion ◽  
Cryptand 222

The reaction of [2.2.2]cryptand, 4,7,13,16,21,24-hexaoxa-1,10-diazabicyclo- [8 .8 .8 ]hexacosane, with mercuric thiocyanate yields crystals of [Hg(cryptand 222 )][{Hg(SCN )3 }2]. The compound crystallizes monoclinically, space group C2/c, Z = 4, a = 2478.3(12), b = 1540.4(4), c = 1049.4(3) pm, β = 108.77(3)°. In the cation the mercury atom is 8 -coordinated by six oxygen and two nitrogen atoms with distances Hg -N 220(2) pm and Hg -O 268.8(9) pm (mean value). The polymeric anion consists of infinite chains -Hg -SCN -Hg - with bond distances Hg-S 254.2(4) and Hg-N 257(2) pm. Each Hg atom carries two additional terminal SCN ligands, with a mean Hg-S distance o f 244( 1) pm; the distance from Hg to the N atom of an SCN ligand of a neighbouring Hg atom is 300(2) pm, probably indicating an additional, although weak bonding.

Four-photon coherent resonant propagation and transient wave mixing: Application to the mercury atom

1988 ◽  
Vol 38 (4) ◽  
pp. 1990-2004 ◽  
Author(s):  
N. Mukherjee ◽  
A. Mukherjee ◽  
J.-C. Diels
Keyword(s):  
Mercury Atom ◽  
Wave Mixing ◽  
Transient Wave

81Br NQR and Crystal Structure of Ethylammonium Tribromomercurate(II), CH3CH2NH3HgBr3

1994 ◽  
Vol 49 (1-2) ◽  
pp. 202-208 ◽  
Author(s):  
Hiromitsu Terao ◽  
Tsutomu Okuda ◽  
Kichiro Koto ◽  
Shi-qi Dou ◽  
Alarich Weiss
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
High Temperatures ◽  
Title Compound ◽  
Room Temperature ◽  
Mercury Atom ◽  
Double Chain ◽  
Trigonal Bipyramidal ◽  
81Br Nqr ◽  
Increasing Temperature

Abstract The 81Br NQR triplet spectrum of (CH3CH2NH)3⊕(HgBr3)⊖ was measured in the range 77 K to near the m.p. (99~106°C) v1 decreases strongly with increasing temperature, exhibiting 136.784 MHz at 77 K and 128.129 MHz at 298 K. v2 decreases from 82.060 MHz at 77 K to 76.322 MHz at 298 K. v3 increases with temperature, showing v3 = 81.292 MHz at 77 K and 84.903 MHz at 298 K. Replacement of the ammonium hydrogens by deuterium produces a negative shift of v1 and positive ones of v2 and v3 at high temperatures. These shifts change with temperature from |~ 0| up to |~ 200| kHz. The crystal structure of the title compound was determined at room temperature: P 21/m, Z = 2, a = 1021.6(8) pm, b = 643.0(6) pm, c = 691.8(6) pm, β = 96.96 (4)°. The coordination of the mercury atom by the bromines is trigonal bipyramidal; by formation of bridges Hg··· Br··· Hg by one of the three bromines (Br(2)) of the planar HgBr⊖ ions a double chain of trigonal bipyramids is formed, running along the b-axis of the crystal. Br(1) and Br(3) are single bonded to Hg. The hydrogen bonds N -H···Br(1) and N -H ··· Br(3) (twice), connect the Hg-Br chains to planes lying parallel to the be plane at x = 0. The relations between the Br-NQR spectrum and the structure are discussed.

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