Skip to main content

Questions tagged [inorganic-chemistry]

Inorganic compounds generally do not have C-H bonds, while organic compounds do have such bonds. The distinction between inorganic and organic chemistry, however, is far from absolute.

Filter by
Sorted by
Tagged with
-2 votes
1 answer
25 views

Formation of cocrystals troubleshootin

In cocrystal formation what would the possible reason be for the precipitation of an amorphus oily precipitate not suitable for PXRD? Solvent was DMF and the reagent were L-thyroxine and ...
luka racic's user avatar
2 votes
0 answers
154 views

Are there any compounds with pentagonal pyramidal molecular geometry?

As a high school student, I am curious whether there are any compounds with pentagonal pyramidal molecular geometry. I know that most compounds having hexacoordinated central atom and having $\sigma = ...
Bongo Man's user avatar
  • 369
3 votes
0 answers
27 views

What prevents an octahedral complex from always assuming the quadratic planar limiting case, due to the Jahn–Teller distortion?

When a given high-spin complex is Jahn–Teller distorted, this does not change the relative position of the total energy of the complex (assuming $\mathrm{d^{10}}$ configuration). Indeed, the ...
Rivinius's user avatar
0 votes
0 answers
41 views

Do the paired electrons of subshells' degenerate orbitals contribute to the total exchange energy?

For instance, in d7, there are 5 electrons with the same spin, and 2 electron with the opposite spin, meaning that there are only 3 unpaired electrons. So, which of these would be correct? (i) Total ...
Ayushi Kaushal's user avatar
-2 votes
1 answer
269 views

Integration of Artificial Intelligence in Chemistry [closed]

How is Artificial Intelligence impacting the design and discovery of new compounds and medications? Given the rapid advancements in artificial intelligence and machine learning methodologies over the ...
user avatar
0 votes
0 answers
45 views

Reduction of direct product representation

When we do the reduction of the reducible representation generated from the total wavefunction expressed as product of MOs of appropriate symmetry, we can find the direct sum of more than one ...
Chemistry.'s user avatar
0 votes
0 answers
50 views

Group theory and exact Eigenfunctions of Hamiltonian

I think I've understand why the real Eigenfunctions of Hamiltonian belong to a given irreducible representation and I've read that also MOs have to transform as irreducible representation due to the ...
Chemistry.'s user avatar
2 votes
2 answers
373 views

What does the 2 in t2g stand for?

I have read so far that it is about whether the d-Orbital is symmetric to a C2 element perpendicular to its main rotational axis. If all the given orbitals in a group are symmetric to that element, ...
Rivinius's user avatar
2 votes
0 answers
41 views

Commutating operators of angular momenta

I've studied the formal procedure to pass from the uncoupled basis set of individual angular momenta to the coupled basis set of total angular momenta for polyelectronic atoms. I start from an ...
Chemistry.'s user avatar
4 votes
0 answers
96 views

How to quench and get rid of P2S5?

I am using $\ce{P2S5}$ as a thionating agent on ketones and amides. The reaction works very well, however there is little to no information on how to safely quench and get rid of the unreacted $\ce{...
Babylonian_slut's user avatar
0 votes
2 answers
396 views

Explanation/calculation for the pH of a solution of 2.0 M Sulfuric Acid reacting with Zinc?

For school, I am doing a small study on a chemical reaction involving 2 M Sulfuric Acid (H₂SO₄) and Zinc (Zn). I have done some background research on the process to calculate the pH of a solution, ...
Matt's user avatar
  • 11
2 votes
1 answer
69 views

What is the difference between using an oven or an IR lamp to dry the coatings of fuel cells?

I wondered how the morphology of the catalyst coating for fuel cells changes if it is dried either in a conventional oven (40 °C, 60°C, 80°C) or under an IR lamp. I am pretty certain that it changes, ...
P M's user avatar
  • 81
0 votes
0 answers
21 views

Some advice on inorganic textbook [duplicate]

I'd like to have some advice on Inorganic textbooks. I've already consulted some books (Kettle, Drago, Keiter, Cotton) and they are all very useful, but now I'm searching for a textbook which focuses ...
Chemistry.'s user avatar
2 votes
1 answer
265 views

Reaction of silver with hydrogen sulfide

Usually, when we talk about the tarnishing of silver in air, we think of it as the reaction of silver with hydrogen sulfide in the air. However, when looking at the standard potentials, silver should ...
Mäßige's user avatar
  • 117
-2 votes
1 answer
92 views

Doubt on vibronic transitions

When we justify the presence of electronic transitions forbidden by Laporte selection rule, the coupling between electronic and vibrational states help us. Why we say that in this way we are ...
Chemistry.'s user avatar
4 votes
1 answer
297 views

Nephelauxetic effect and covalency of metal-ligand bonds

As I was reading about nephelauxetic effects, which is the effect that atomic d-orbitals are bigger in a complex than in gaseous metal ions. The Racah interelectronic repulsion parameter gets smaller, ...
Mäßige's user avatar
  • 117
4 votes
1 answer
272 views

Principal quantum number and 'good' quantum numbers

When we discuss about configurations we specify n, l, m quantum numbers for the individual electrons. My question is: why when we pass from configurations to atomic terms in order to use the total ...
Chemistry.'s user avatar
-1 votes
1 answer
439 views

Why is iron(III) more stable than iron(II)?

What I have seen, and what has been answered before (Why Fe 3+ is more common than Fe 2+), is that it is due to the half filled d orbital of $\ce{Fe^3+}$ compared to $\ce{Fe^2+}$. I don't understand ...
Ariichu's user avatar
  • 11
0 votes
0 answers
34 views

Relative magnitude of the crystal field and spin-orbit coupling

In the EPR part of the book 'Physical methods in Inorganic Chemistry' by S. Drago i found that relative magnitudes of crystal field and spin-orbit coupling affect the g values. I understand that the ...
Chemistry.'s user avatar
1 vote
0 answers
41 views

Why is it that in a buffer solution the equilibrium concentrations may be assumed to be the initial concentrations? [duplicate]

Considering the Henderson–Hasselbalch equation, $$\text{pH} = \text{p}K_a + \lg \frac{[\ce{AcO⁻}]} {[\ce{AcOH}]}$$ $$\text{p}K_a = \lg \frac{[\ce{AcO⁻}][\ce{H⁺}]} {[\ce{AcOH}]}$$ Why are the values ...
reisan's user avatar
  • 11
-5 votes
1 answer
126 views

Exceptions in ionization energies of Oxygen and Nitrogen

We all know that it is difficult to remove an electron from atoms that are half-filled or fully filled. Thus they have higher ionization energy. But today my teacher said that $N^{-3}$ has a lower ...
Satyam's user avatar
  • 5
1 vote
1 answer
445 views

Which is better ligand, PH3 or PF3?

It confuses me that many researches pointed out different results about phosphine ligands properties (σ-donor and π-acceptor). Since both phosphine $\ce{PH3}$ and phosphorus trifluoride $\ce{PF3}$ ...
Shira's user avatar
  • 473
2 votes
1 answer
358 views

Electronic transition of iodine and non-bonding orbitals

As you all know, iodine has a purple color when in the vapor phase and when dissolved in non-coordinating solvents such as carbon tetrachloride. What electronic transition is responsible for this? A ...
Mäßige's user avatar
  • 117
-3 votes
1 answer
240 views

Why does the oxygen in NaOH (sodium hydroxide) acquire an electron from the sodium if it's going to become unstable and give away the electron? [closed]

Mind you that the oxygen is already stable, having an even number of electrons and protons? Is the oxygen really neutral when it has an even number of electrons and protons?
Phillip Grigsby's user avatar
3 votes
1 answer
86 views

Can Silicon hinder the precipitation of AgCl?

In my lab, I am having trouble with getting correct silver percentages. For example, let's say a 99.99% silver sample. Digested in 10 mL of a 30% HNO3, fill up to 100 mL with DI, then concentrated (...
Matt's user avatar
  • 31
5 votes
1 answer
273 views

Why is pyramidal structure observed in trisilylphosphine?

Why does trisilylphosphine $\ce{P(SiH3)3}$ (ICSD Entry: 72676, [1]) have a pyramidal structure while trisilylamine $\ce{N(SiH3)3}$ (ICSD Entry: 201428, [2]) is planar? I think since silicon has a ...
Substitute_Y's user avatar
2 votes
1 answer
40 views

Production SnO2 nanoparticles through chemical co-precipitation method: chemical equation of the reaction

In this paper, the production of $\ce{SnO2}$ nanoparticles through the chemical co-precipiation method is described using $\ce{SnCl2·2H2O}$ as a precursor. According to their experimental section, $\...
user21390097's user avatar
-2 votes
1 answer
67 views

Refrence on shielding effect vs inter electronic repulsion

Recently I came across a very interesting concept , some scholars were saying that - Shielding accounts just one component (radial) of interelectronic repulsion not complete repulsion Who they are - ...
Bharat Prajapat's user avatar
1 vote
0 answers
68 views

How do aqueous nanoparticle suspensions behave?

I have found many pictures of nanoparticle suspensions on the web, but I can find no indication of how these suspensions behave, e.g. do the nanoparticles remain in suspension indefinitely, or do they ...
Shaun Ross's user avatar
1 vote
1 answer
184 views

Crystal Field Splitting for a d0 metal ion

Its well-known that crystal field splitting occurs because the electrons in d orbitals repel incoming ligands and the d orbitals are no longer degenerate. My question is now: is the repulsion (with ...
whitingsheep's user avatar
15 votes
3 answers
2k views

If a crystal has alternating layers of different atoms, will it display different properties depending on which layer is exposed?

Many metal diboride compounds like $\ce{MgB2}$, $\ce{TiB2}$, and $\ce{ReB2}$ have laminated crystal structures with alternating sheets of metal atoms and boron atoms. If we polish the surface to ...
哲煜黄's user avatar
  • 571
3 votes
1 answer
83 views

If a crystal has multiple oxidation states of the same transition metal element, is there only one possible configuration?

Here is the crystal structure of soluble Prussian Blue $\ce{KFe[Fe(CN)6]}$. The Fe(II) and F(III) are spaced alternatively like NaCl with cyanides in between. You can see that the places of Fe(II) and ...
哲煜黄's user avatar
  • 571
-4 votes
2 answers
284 views

electron - electron repulsion and shielding effect [closed]

What is difference between shielding and electron electron repulsion. When I read this article , I came to know that both are different. First Read this paragraph and see the graph of ionization ...
Govind Prajapat's user avatar
-1 votes
1 answer
263 views

Ionization and exchange energy [closed]

As we all know that 'Nitrogen' has higher 'Ionization Energy' than its neighboring elements both carbon and oxygen, opposite to the trend of increasing ionization energy across a period. The reason ...
Govind Prajapat's user avatar
0 votes
0 answers
240 views

What is the shape of tetraamminenickel(II) complex?

I have basic knowledge of crystal field theory (CFT) and how to predict geometries in complexes with a coordination number of 4. For $\ce{[Ni(NH3)4]^2+}$, we find that the metal center, $\ce{Ni^2+}$, ...
sushant_padha's user avatar
-4 votes
1 answer
42 views

Inorganic chemistry, Atomic Mass [duplicate]

How can we determine the atomic mass of an unknown pure sample of an element without using modern techniques like spectroscopy etc... basically I'm interested to know that which physical methods or ...
Abhishek 's user avatar
1 vote
1 answer
122 views

Significance of Character tables in d orbital splitting

When we have a molecule say (Co(NH2)6) hypothetically any octahedral molecule it has the point group of Oh and the character table shows the quadratic function such as ($z^2,2z^2-x^2-y^2$) ($xy, xz, ...
Harshdeep Chhabra's user avatar
-2 votes
1 answer
274 views

What is causing rust-like stains on my stainless steel appliances? [closed]

Two weeks ago we discovered that our new Kohler faucet was leaking under the sink in our lanudry room adjacent to our kitchen. We shut off the water and have not used the sink. It apparently was ...
Jerry's user avatar
  • 9
-2 votes
1 answer
76 views

Perfect amount of HCl to precipitate 1.000g of silver alloy

I am trying to figure out the perfect amount of HCl to drop silver out of a solution for a specific alloy. This alloy is 79.5% - 80.25 % Ag. We digest this (size of the sample is usually 1.000g or 0....
Matt's user avatar
  • 31
2 votes
0 answers
81 views

Effect of carbon dioxide impurities on the Haber–Bosch process

The Haber–Bosch process is a highly exothermic reaction that is used to produce ammonia from nitrogen and hydrogen. The nitrogen is typically obtained from the air using a membrane separation process, ...
user206730's user avatar
-1 votes
2 answers
85 views

What is the meaning of "maximum" weight produced after series ot reactions?

$4.14$ grams of a piece of lead was made to react with $\ce{HNO3}$ so as to produce lead nitrate. Lead nitrate further reacts with a series of reagents to form $\ce{(NH4)2PbCl6}$. Then find the ...
Aleph's user avatar
  • 187
5 votes
1 answer
246 views

Why does oxidation of gold with oxygen work in cyanide leaching?

Normally gold can't be oxidizes by oxygen, but in the presence of $\ce{CN}^-$ it works. In general, I have understood that this is due to the fact that complexation $\ce{[Au(CN)_2]^-}$ decreases the ...
iwab's user avatar
  • 359
-3 votes
1 answer
82 views

Why the explosives get formed? [closed]

In many reactions mechanisms, we study things like 'it forms explosive mixture and should be discarded off immediately'. Now my question is 'If those compounds are that much unstable that it will ...
KeShAw's user avatar
  • 67
6 votes
1 answer
381 views

Why is there no neutral [Cr(OC)6] or anionic [Fe(NC)6] - isomers of cyanide and carbonyl complexes?

I was just reading about linkage isomerism, that usually arise due to the fact that some ligands are ambidentate (i.e. $\ce{SCN}$ and $\ce{NCS}$). I then think to myself, considering only the ligand ...
Tensor's user avatar
  • 264
7 votes
2 answers
816 views

Why is prismane explosive but cubane is not?

So I was reading about polyhedral hydrocarbons, because I dig the topic, and I read (admittedly on wikipedia entries... But they cited papers, I swear!) that prismane is explosive due to the massive ...
urquiza's user avatar
  • 711
6 votes
1 answer
469 views

f-f transitions and their cause

I was looking at this question: How can f-f transitions happen? And got some answers that answered some of the questions I had, but not all. I am still trying to conceptually grasp why f-f transitions ...
Mäßige's user avatar
  • 117
3 votes
2 answers
280 views

Why is silver(I) phosphate so unexpectedly thermally stable?

Silver(I) oxide is completely decomposed in air already at $\pu{300 °C}.$ Formulate the decomposition reaction and the corresponding mass action expression. $\ce{Ag3PO4}$ can be melted at $\pu{800°C}$ ...
Spinnel's user avatar
  • 41
7 votes
2 answers
348 views

Do peroxy acids such as peroxynitric acid have anhydrides?

Anhydrides reversibly react with water to form a respective acid or base. For example, $\ce{CO2}$ is the anhydride of $\ce{H2CO3}$: $$\ce{CO2 + H2O <=> H2CO3}.\tag{R1}$$ Acidic anhydride can be ...
MrSwey's user avatar
  • 79
-4 votes
1 answer
647 views

Delta Bond Or Pi Bond, Which Is More Strong? [closed]

It is pretty evident that sigma bonds are more stronger than pi bonds. (due to the extent of overlapping) But when there are 4 lobes of two d-orbitals involved in overlapping as that is the case in ...
chemist_heisenberg's user avatar
6 votes
1 answer
381 views

Thermal instability of sulfur and selenium iodides

After recent question about non-existent pnictide(V) iodides, I stumbled upon a similar issue in oxygen group. For example, $\ce{SI2}$ was reported to be found… but at the temperature as low as $\pu{9 ...
Mithoron's user avatar
  • 4,563

1 2 3
4
5
99