ARTICLES
... can be adjusted; they are typically collinear and ∼1 cm apart. After exiting the desolvation tube, ions are focused with a tube lens (C) and pass through a 1 mm diameter skimmer (D) typically held at 5-30 V, into the source chamber maintained at 3 × 10-4 Torr by a 6 in. diffusion pump. A 10 cm long ...
... can be adjusted; they are typically collinear and ∼1 cm apart. After exiting the desolvation tube, ions are focused with a tube lens (C) and pass through a 1 mm diameter skimmer (D) typically held at 5-30 V, into the source chamber maintained at 3 × 10-4 Torr by a 6 in. diffusion pump. A 10 cm long ...
coordination compounds
... [Ag(NH3)2]Cl ion Ag+ is complexing agent, the molecules of NH3 are ligands, CI- ions form the outer sphere. The complexing agents can be positively charged metal ions that have free electron cell (Fe2+, Co2+, Fe3+, Ni2+, Cu2+, Ag+, Ng2+) and atoms of non-metals with positive oxidation number (Si4+, ...
... [Ag(NH3)2]Cl ion Ag+ is complexing agent, the molecules of NH3 are ligands, CI- ions form the outer sphere. The complexing agents can be positively charged metal ions that have free electron cell (Fe2+, Co2+, Fe3+, Ni2+, Cu2+, Ag+, Ng2+) and atoms of non-metals with positive oxidation number (Si4+, ...
Section 2 - Input Description - Theoretical and Computational
... GAUSSIAN style internals will be input. ZMTMPC MOPAC style internals will be input. FRAGONLY means no part of the system is treated by ab initio means, hence $DATA is not given. The system is specified by $EFRAG. ...
... GAUSSIAN style internals will be input. ZMTMPC MOPAC style internals will be input. FRAGONLY means no part of the system is treated by ab initio means, hence $DATA is not given. The system is specified by $EFRAG. ...
Antitu mor properties of cisplatin and titanium(IV) complexes '
... deals with compounds that display antitumor properties. The most successful anticancer drug to date containing a transition metal is cisplatin, [Pt(NH3)2Ch]3. The bioactivity of organometallic compounds and their anticipated application in medicine is at present a focal point of research. These stud ...
... deals with compounds that display antitumor properties. The most successful anticancer drug to date containing a transition metal is cisplatin, [Pt(NH3)2Ch]3. The bioactivity of organometallic compounds and their anticipated application in medicine is at present a focal point of research. These stud ...
Investigating the Dearomative Rearrangement of Biaryl Phosphine- Ligated Pd(II) Complexes
... stabilities of 11a and 11b, yet there is no discernible trend between solvent polarity and equilibrium concentration or rate of rearrangement. Because halide dissociation must be ratedetermining or precede the rate-determining step in Pathways III and IV, these results are inconsistent with an iondi ...
... stabilities of 11a and 11b, yet there is no discernible trend between solvent polarity and equilibrium concentration or rate of rearrangement. Because halide dissociation must be ratedetermining or precede the rate-determining step in Pathways III and IV, these results are inconsistent with an iondi ...
Nitrogen Complexes of the Platinum Metals
... rather difficult to detect because the more symmetrical N-N bond, which they would nitrogen into other molecules. Table I1 contain, would not give a strong band in the shows a comparison of bond lengths in a series infrared spectrum. If they do exist they are of diazo-compounds and nitrogen complexe ...
... rather difficult to detect because the more symmetrical N-N bond, which they would nitrogen into other molecules. Table I1 contain, would not give a strong band in the shows a comparison of bond lengths in a series infrared spectrum. If they do exist they are of diazo-compounds and nitrogen complexe ...
無投影片標題
... by delocalizing into the electron sea. The strength of metallic bond in these metals is thus very strong. In the case of s-block metals, the metallic radius is larger and most of them do not have close-packed structures. Also , as they have only one or two valence electrons per atom delocalizing int ...
... by delocalizing into the electron sea. The strength of metallic bond in these metals is thus very strong. In the case of s-block metals, the metallic radius is larger and most of them do not have close-packed structures. Also , as they have only one or two valence electrons per atom delocalizing int ...
- Free Documents
... both cases the CO bond lengths clearly indicate that CO is in fact a double bond. which are a wellknown class of predominantly thermochromic compounds. namely thermochromism and photochromism . while the CN bond lengths show that CN bonds are single tures are then reported as zwitterions instead of ...
... both cases the CO bond lengths clearly indicate that CO is in fact a double bond. which are a wellknown class of predominantly thermochromic compounds. namely thermochromism and photochromism . while the CN bond lengths show that CN bonds are single tures are then reported as zwitterions instead of ...
Construction of Porous Solids from Hydrogen
... (M) aqua complexes and trigonal trifunctional building units (triangles) to form extended layers having no voids and (b) a porous structure with molecular guests (large filled spheres) occupying the void space resulting from the liberation of water ligands from those layers. ...
... (M) aqua complexes and trigonal trifunctional building units (triangles) to form extended layers having no voids and (b) a porous structure with molecular guests (large filled spheres) occupying the void space resulting from the liberation of water ligands from those layers. ...
pdf-Dokument - Universität Bonn
... species that shows distinct differences when compared to other complexes reported so far. The aim of studying the (spectroscopic) properties of those well-defined model systems is to benefit from their understanding when more complex systems are investigated, whose exact structures are not known in ...
... species that shows distinct differences when compared to other complexes reported so far. The aim of studying the (spectroscopic) properties of those well-defined model systems is to benefit from their understanding when more complex systems are investigated, whose exact structures are not known in ...
Electronic properties, hydrogen bonding, stacking, and cation
... structures.16 –20 The calculations clearly demonstrate that potential energy and free energy surfaces of isolated base pairs differ considerably. On the potential energy surface, H-bonded structures are in general more stable compared to stacking arrangements. However, entropy contribution favors st ...
... structures.16 –20 The calculations clearly demonstrate that potential energy and free energy surfaces of isolated base pairs differ considerably. On the potential energy surface, H-bonded structures are in general more stable compared to stacking arrangements. However, entropy contribution favors st ...
Inorganic Structural Chemistry
... specifically disclaim all warranties, including without limitation any implied warranties of fitness for a particular purpose. This work is sold with the understanding that the publisher is not engaged in rendering professional services. The advice and strategies contained herein may not be suitable f ...
... specifically disclaim all warranties, including without limitation any implied warranties of fitness for a particular purpose. This work is sold with the understanding that the publisher is not engaged in rendering professional services. The advice and strategies contained herein may not be suitable f ...
Perspective: Relativistic effects
... the chemical shift of the light atom to be more negative (more shielded) than in an analogous compound with Cl or F. This so-called normal halogen dependence has been known for quite some time19 to be caused by spin-orbit (SO) coupling,20 which is a relativistic effect. SO coupling also leads to the ...
... the chemical shift of the light atom to be more negative (more shielded) than in an analogous compound with Cl or F. This so-called normal halogen dependence has been known for quite some time19 to be caused by spin-orbit (SO) coupling,20 which is a relativistic effect. SO coupling also leads to the ...
PARAMAGNETIC RELAXATION REAGENTS HANS G
... is in thermal contact with its environment and that the nuclei are not interacting strongly with each other. Since the probability of spontaneous emission is negligible, the return or loss of energy, must be governed by interactions with fluctuating local magnetic fields generated by the lattice (th ...
... is in thermal contact with its environment and that the nuclei are not interacting strongly with each other. Since the probability of spontaneous emission is negligible, the return or loss of energy, must be governed by interactions with fluctuating local magnetic fields generated by the lattice (th ...
Chemistry of Molybdenum using CBC
... This is an empty orbital on the metal which can accept the donation of an electron pair from the molybdenum. The number of Z-functions (z) is represented by Zz. The molecule BR3 has one Zfunction. Compounds of molybdenum containing such σ-bonding Zz ligands are rare and will not be further discussed ...
... This is an empty orbital on the metal which can accept the donation of an electron pair from the molybdenum. The number of Z-functions (z) is represented by Zz. The molecule BR3 has one Zfunction. Compounds of molybdenum containing such σ-bonding Zz ligands are rare and will not be further discussed ...
Mössbauer Spectrometry
... Mössbauer spectrometry provides unique measurements of electronic, magnetic, and structural properties within materials. A Mössbauer spectrum is an intensity of γ-ray absorption versus energy for a specific resonant nucleus such as 57Fe or 119Sn. Mössbauer spectrometry looks at materials from the “i ...
... Mössbauer spectrometry provides unique measurements of electronic, magnetic, and structural properties within materials. A Mössbauer spectrum is an intensity of γ-ray absorption versus energy for a specific resonant nucleus such as 57Fe or 119Sn. Mössbauer spectrometry looks at materials from the “i ...
High-Resolution X-ray Emission and X
... for compounds in which the metal site has tetrahedral symmetry than for (distorted) octahedral systems. In tetrahedral systems, the local mixing of p and d nature is symmetry allowed, while for a system with inversion symmetry such as octahedral symmetry, it is ‘forbidden’. This rule is relaxed in t ...
... for compounds in which the metal site has tetrahedral symmetry than for (distorted) octahedral systems. In tetrahedral systems, the local mixing of p and d nature is symmetry allowed, while for a system with inversion symmetry such as octahedral symmetry, it is ‘forbidden’. This rule is relaxed in t ...
Two-dimensional metal-organic networks as templates for the self
... STM. The authors write that "these observations [...] suggest a strong potential for STM as a tool for observing molecular phenomena, provided STM image contrast is understood and molecular motion [...] can be overcome". Almost thirty years later we can say that this forecast was completely fulfilled ...
... STM. The authors write that "these observations [...] suggest a strong potential for STM as a tool for observing molecular phenomena, provided STM image contrast is understood and molecular motion [...] can be overcome". Almost thirty years later we can say that this forecast was completely fulfilled ...
Polaron dynamics in a two-dimensional Holstein-Peierls system Linköping University Post Print
... these studies is to keep all parameters but one to the values shown in Table I and when these results are discussed below, we explicitly state the value(s) of the parameter which is changed. It is common in studies of disordered systems to account for the long-range forces that result from, for inst ...
... these studies is to keep all parameters but one to the values shown in Table I and when these results are discussed below, we explicitly state the value(s) of the parameter which is changed. It is common in studies of disordered systems to account for the long-range forces that result from, for inst ...
NICKEL(II) PINCER COMPLEXES SUPPORTED BY 2,6
... The starting material of the ligand synthesis, 2,6-dicarboxaldehye was prepared from 2,6-dimethanol pyridine through oxidation with SeO2/Dioxane (Figure 9). Then, tolualdehyde was stirred at room temperature for 5 h with 4-methylacetophenone and NaOH in EtOH/H2O to form 1,3-bis(4-tolyl)-2-propen-1-o ...
... The starting material of the ligand synthesis, 2,6-dicarboxaldehye was prepared from 2,6-dimethanol pyridine through oxidation with SeO2/Dioxane (Figure 9). Then, tolualdehyde was stirred at room temperature for 5 h with 4-methylacetophenone and NaOH in EtOH/H2O to form 1,3-bis(4-tolyl)-2-propen-1-o ...
Synthesis and Characterization of Peroxo Vananidium (V
... amino carboxylate have been described. Vanadium (V) oxidizes many ligands thus limiting the isolation of a large number of vanadium (V) complexes. Oxidising properties of vanadium are readily exploited in catalysis oxidations. Important example of such catalysis is oxidation of SO 2 to SO3 in the in ...
... amino carboxylate have been described. Vanadium (V) oxidizes many ligands thus limiting the isolation of a large number of vanadium (V) complexes. Oxidising properties of vanadium are readily exploited in catalysis oxidations. Important example of such catalysis is oxidation of SO 2 to SO3 in the in ...
reactions of period 3 elements with water
... while atoms of other transition elements have two 4s electrons (1) Reason for copper Configuration as shown rather than [Ar] 3d9 4s2 (1) because of exceptional stability associated with a fully occupied 3d subshell (1) Reason for chromium Configuration as shown rather than [Ar] 3d4 4s2 (1) because t ...
... while atoms of other transition elements have two 4s electrons (1) Reason for copper Configuration as shown rather than [Ar] 3d9 4s2 (1) because of exceptional stability associated with a fully occupied 3d subshell (1) Reason for chromium Configuration as shown rather than [Ar] 3d4 4s2 (1) because t ...
Synthesis of chiral furanoside diphosphinite and thioether-phosphinite compounds derived from
... steps. The solution structures of the trigonal bipyramidal hydrodorhodium complexes with bidentate phosphorus ligand (P-P) [HRh(P-P)(CO)2], which are the resting states in the hydroformylation reaction, have been analyzed in detail.xi These complexes are generally assumed to have a trigonal bipyrami ...
... steps. The solution structures of the trigonal bipyramidal hydrodorhodium complexes with bidentate phosphorus ligand (P-P) [HRh(P-P)(CO)2], which are the resting states in the hydroformylation reaction, have been analyzed in detail.xi These complexes are generally assumed to have a trigonal bipyrami ...
Jahn–Teller effect
The Jahn–Teller effect, sometimes also known as Jahn–Teller distortion, describes the geometrical distortion of molecules and ions that is associated with certain electron configurations. This electronic effect is named after Hermann Arthur Jahn and Edward Teller, who proved, using group theory, that orbital nonlinear spatially degenerate molecules cannot be stable. The Jahn–Teller theorem essentially states that any nonlinear molecule with a spatially degenerate electronic ground state will undergo a geometrical distortion that removes that degeneracy, because the distortion lowers the overall energy of the species. For a description of another type of geometrical distortion that occurs in crystals with substitutional impurities see article off-center ions.