Questions tagged [reference-request]
This tag is for questions looking for a single specific, or a small number of (citable) references.
401
questions
7
votes
2
answers
830
views
Does high pressure reverse reaction between zinc and sulfuric acid?
When zinc is added to sulfuric acid, it undergoes a chemical reaction that generates hydrogen gas and zinc sulfate. Can this reaction be reversed by applying pressure to the products converting them ...
- 181
0
votes
1
answer
44
views
How can I find references related to pH for water solutions of salts [closed]
I have searched the web pretty much all day because I want to work out what the pH will be of various salts when they are in water solution. I have searched for references related to pKa and pH, but I ...
- 231
-2
votes
1
answer
49
views
Aluminum nitride hydrolysis [closed]
I wanted to ask some reference about aluminum nitride hydrolysis in water.
Specifically I would like to know if there is the formation of radicals or of some other reactive species.
- 1
0
votes
0
answers
40
views
Database of atomic crystal structure data or images of rocks and minerals?
I am looking for crystal structure images so I can redraw them in a nice form. However, I don't seem to find much searching Google.
Perhaps this is a slightly better example (searching for Quartz ...
- 103
-2
votes
2
answers
101
views
Looking For Resources on Separating Iron, Silicon Dioxide, and Sodium Chloride [closed]
I am working on an experiment and lab report for my high school chemistry course where I am given a vial with a mixture of Ferrum, silicon dioxide, and sodium chloride. I need to figure out how to ...
- 15
5
votes
1
answer
450
views
Meaning of equivalents in organic synthesis
The use of "equivalents" as used in titrations/chemical analysis is an obsolete concept except in some countries. The original meaning of equivalent weights is the weight of a compound that ...
- 36.6k
5
votes
0
answers
128
views
Does chromium(III) oxide react with or dissolve in liquid sulfur dioxide?
Liquid $\ce{SO2}$ (b.p. −10 °C) is known as a versatile solvent (yet not particularly pleasant to work with) for a wide range of organic and inorganic compounds having limited solubility in ...
- 36.9k
0
votes
0
answers
41
views
Searching for evidence-based published study that compares disinfectant residues after evaporation
I've been plowing through databases to find evidence-based research reporting on the residue remaining after evaporation of chemical disinfectants. I want to know if there is a study which states the ...
0
votes
1
answer
75
views
What does the word "dynamics" mean in the context of proteins or biomolecules in general?
What does it mean by “dynamics” when we say “dynamics of protein” or “dynamics of biomolecules”? For instance, McCammon's paper has the title "Protein Dynamics" [1]. What does the word “...
- 141
0
votes
0
answers
98
views
IR spectra database for inorganic compounds
I would need a database of IR spectra of inorganic compounds, possibly free of charge. For organic compounds there is for example "AIST: Spectral Database for Organic Compounds, SDBS" (https:...
- 1
0
votes
2
answers
131
views
Can anisole be nitrated only with nitric acid?
Is it possible to nitrate anisole using only concentrated nitric acid? Or is it necessary to use sulfuric acid or acetic anhydride? Could you please help me with some references?
- 1
3
votes
1
answer
84
views
How does coenzyme A produce proton from pyruvate ions?
Coenzyme A (CoA) is a complex molecule consisting of mercaptamine, β-alanine, pantoic acid, diphosphate, pentose, phosphate and adenine moieties:
Which part of it actually plays role in the formation ...
- 385
2
votes
1
answer
69
views
Mathematical models of Vaporization-Condensation dynamics
I am a mathematician now studying an introductory chemistry course.
Consider a liquid in a closed container, at (say) room temperature.
Then some of the liquid will vaporize. Then some of the ...
- 141
0
votes
0
answers
30
views
Have guided diffusion models been applied in the chemistry informatics domain yet for molecule prediction/generation?
Guided diffusion models have been a big deal in machine learning recently. Are you aware of any literature (i.e. preprints or peer-reviewed publications) that have applied guided diffusion models in ...
- 111
4
votes
1
answer
210
views
Has tellurium(II) iodide been properly characterized ever?
According to Wikipedia, tellurium tetraiodide decomposes on heating:
$$\ce{TeI4 ->[\Delta] TeI2 + I2}$$
However, the reaction is somewhat wrong as according to this 2008 paper:
Solid tellurium ...
- 24k
4
votes
2
answers
205
views
What solvent dissolves calcium nitrate but not ammonium nitrate?
I am experimenting with a precipitation reaction between ammonium sulfate solution and calcium nitrate. Calcium sulfate precipitates and can be filtered out easily.
I am wondering if there's a way I ...
- 51
1
vote
1
answer
130
views
Can all 20 H atoms of pentagonal dodecahedrane be substituted with high yield and a wide range of substituents? What limits full substitution?
I first came across dodecahedrane in comments below What dodecahedral molecule is Linus Pauling likely holding in this photograph? Does it have 40 carbon atoms?
Wikipedia's Dodecahedrane; Derivatives; ...
- 5,573
1
vote
0
answers
55
views
Feynman books analogous in chemistry [closed]
Is there a analogous to feynman lectures in physics but for chemistry? Like a book ir series of books that covers all the basics?
- 19
4
votes
1
answer
377
views
Ellingham diagram/graph for tungsten
I've recently come across one of the methods to form tungsten carbide($\ce{WC}$) from wolframite ($\ce{(Fe,Mn)WO4}$) by using carbothermic reduction which was supposedly one of the first methods for ...
- 164
7
votes
1
answer
351
views
Caffeine molecule representation and orientation
Almost all the representations of the caffeine molecule that I've come across have the two rings drawn next to each other on the horizontal axis.
Any particular reason for this?
Would it be sacrilege ...
- 107
4
votes
0
answers
72
views
Mapping of half-life decay for all elements/isotopes
Is there an open resource that helps illustrate all paths of decay for all isotopes (e.g. $\ce{^{99}Mo}$ decaying to $\ce{^\mathrm{99m}Tc})?$ I know the result state/transition map would be massive, ...
- 149
0
votes
1
answer
263
views
IUPAC name of benzoyl chloride
I came up with two possible names: benzoyl chloride and benzene carbonyl chloride. I believe both names are correct.
Wikipedia says that the preferred IUPAC name is benzoyl chloride:
Can someone ...
- 264
1
vote
0
answers
350
views
Interpretation of azeotropes from statistical mechanics derivation
In an earlier posted question titled Reason for the formation of azeotropes, @porphyrin presented an elegant derivation from statistical mechanics to interpret partial pressures for the two components ...
- 369
-4
votes
1
answer
154
views
Where can i find accurate bond angles?
I am trying to find places where I can have accurate bond angles of certain molecules such as $\ce{F2Se}$, $\ce{Cl2S}$, or even $\ce{S2Se}. I have looked everywhere and have found only 3 sources that ...
1
vote
0
answers
40
views
Where to find the ChEMBL21 database in CSV format?
I come from an artificial intelligence (AI) background (and not from chemistry).
However, my Ph.D. thesis is about Deep Reinforcement Learning for drug design.
From one of the most famous papers in ...
- 321
7
votes
2
answers
834
views
What is the chemical composition of Ferrous Ferrocyanide?
To this day, iron-cyanide complexes confuses me. So, I want to settle this once and for all. After scavenging the internet, I gathered the following result:
$$
\ce{Ferr}
\color{blue}{\ce{ous}}~\ce{...
- 24k
1
vote
0
answers
211
views
Electrode potential of Br2/HBr half cell
I am wondering if it is possible to find the electrode potential of such a half cell:
$$\ce{Br2 (l) + 2 e- <=> 2Br-(g)}$$
The standard electrode potential is for $\ce{Br-(aq)}.$ However, is it ...
- 232
2
votes
1
answer
119
views
What are all the steps on the organic chemistry diagram called The Boat?
When I learnt A-level chemistry, I was told to use a diagram the teacher called The Boat.
It was a diagram illustrating all the chemical reactions that you can do to simple organic compounds. For ...
- 165
5
votes
0
answers
92
views
Anomaly in Faraday's constant measurements
I was reading someone's biography, where the writer stated his early interest in Faraday's constant measurements (this is set six decades ago). My understanding was that Faraday constant is a true ...
- 36.6k
1
vote
2
answers
151
views
Reference request: book that covers an overview of useful materials
I was wondering if there is a book that has a broad coverage of inorganic materials, like concrete, glass, and steel.
Ideally the book would go into how each material is manufactured and some of the ...
- 27
8
votes
3
answers
276
views
Nucleophilicity of sterically hindered enolates
Problem
Answer
Question
Here $\ce{KH}$ obviously acts as a base, and forms the enolate from the ketone, which subsequently act as nucleophiles causing an SN2 reaction on the $\ce{CH3I}$. When this ...
- 1,789
1
vote
0
answers
204
views
Do CHF3 and acetone form a hydrogen bond?
I haven't been able to find a reference confirming that fluoroform forms hydrogen bonds with acetone. Do they?
- 55
6
votes
1
answer
385
views
How is the vibration of multiple atoms treated in vibrational spectroscopy?
Most of the advanced undergraduate textbooks on physical chemistry/ instrumental analysis show the case of a diatomic harmonic oscillator and derive formulae for predicting the frequencies. The ...
- 36.6k
3
votes
0
answers
269
views
Advantages of p-toluenesulfonic acid over sulfuric acid in the formation of acetals
I am currently working on an undergraduate experiment to form a cyclic acetal.
We were asked to use p-toluenesulfonic acid as a catalyst rather than sulfuric acid.
This seems to be common practice ...
- 371
3
votes
2
answers
113
views
Can a Grignard reagent form magnesium halide with an alkyl halide? [duplicate]
$$\ce{RMgX + R'X' -> RR' + MgXX'}$$
Is this reaction possible?
I am not able find any reference to it in the books that I have. Anyone has a reference?
- 39
1
vote
1
answer
169
views
What is the alloying composition of the Zinc-Platinum System?
My research team and I are working on a bimetallic alloy consisting of Zinc and Platinum. We have looked for papers regarding the composition of Zinc-Platinum alloy. But there aren't many papers out ...
11
votes
1
answer
962
views
Does the largest known cycloalkane contain 288 carbon atoms?
If you Google "largest known cycloalkane", you will find this result:
For context, there has been discussions on "largest known alkane":
Largest alkane having a given alkane as ...
- 24k
1
vote
0
answers
255
views
Names of the f suborbitals. (Reference Request)
Today, I have been browsing the internet to know the names of the "f" orbitals. But I have varying answers on the web. Different sources seem to be stating different names. Like here,
and ...
- 765
5
votes
1
answer
733
views
Source for UV cut-off values of buffers
When I want to check a $\mathrm{p}K_\mathrm{a}$ value I look it up in CRC Handbook. Is there such source for UV cut-off values of various buffers?
Usually books in chromatography contain tables with ...
- 51
1
vote
1
answer
226
views
How is electron-impact mass spectrometry data formally reported?
NMR data has the following format when reported in a paper:
How would I go about reporting my EIMS data formally? I tried looking for documents online but couldn't find anything.
- 327
2
votes
0
answers
47
views
Process parameters of typical chemical processes [closed]
I am researching to opportunity of heat recuperation in the chemical industry be means of high temperature heat pumps. However, I am having some trouble with finding suitable applications. I would ...
- 29
5
votes
2
answers
496
views
What is the maximum number of water molecules that has been recorded till date to present as water of crystallization in a compound?
Context: I was casually looking through some old questions when I found this question. The OP wanted a compound that has all the hydrates ranging from monohydrate to decahydrate. I found chromium(III) ...
- 24k
4
votes
2
answers
1k
views
Reactivity of group 13 elements with nitrogen
Do all group 13 elements react with nitrogen to form nitrides of form $\ce{MN}?$
J.D. Lee's Inorganic chemistry book mentions the following:
Aluminium burns in dinitrogen at high temperatures ...
- 1,389
0
votes
0
answers
341
views
What does solid matrix mean?
I am reading "Effect of Freeze-Drying on Quality and Grinding
Process of Food Produce": A Review by Timilehin Martins Oyinloye and Won Byong Yoon.
The problem is they are referring to the ...
- 141
3
votes
1
answer
83
views
Fluorescence quenching by palladium(II) vs. platinum(II) complexes
Why do we observe much stronger (in most cases complete) fluorescence quenching by $\ce{Pd^2+}$ than $\ce{Pt^2+}?$ I work with complexes of both metals and there is no real 100% explanation I can find ...
- 450
1
vote
0
answers
65
views
Molar conductivity of a strong electrolyte
In 1910, Kohlrausch showed that the dependence of the molar conductivity of strong electrolytes is well described by the following equation:
$$\Lambda_m = \Lambda_m^\circ-K\sqrt{c}$$
This equation, ...
- 597
2
votes
0
answers
23
views
Chemical safety information: Where to look to find out how poisonous poisons are?
Could someone point me toward a primer on how to read the toxicity warnings on standard chemical data sheets? Or alternatively, where one should look for more precise information than is contained on ...
- 167
1
vote
0
answers
36
views
Free on-line dissociation constants
Is there a decent on-line source for dissociation constants for acids and bases as CRC alternative?
This chemistry stackexchange old answer no longer has valid links:
Is there an online database of ...
- 31
1
vote
1
answer
85
views
What are the currently most accurate sources for lists of the values for elemental properties
I have a hopefully simple question. I am a tutor working with a student that wants to know where to find the most recent accurate measurements for elemental properties. He's only in Chemistry I, so he'...
- 27
1
vote
1
answer
54
views
Properties of inconel [closed]
I am doing a project on the physics of the spaceX raptor engine. I believe it is made out of a certain type of inconel alloy. I want to understand why this alloy has the properties that it does, but I ...
- 25