Questions tagged [reference-request]
This tag is for questions looking for a single specific, or a small number of (citable) references.
382
questions
5
votes
1answer
282 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 ...
4
votes
0answers
66 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, ...
0
votes
1answer
83 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 ...
1
vote
0answers
325 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 ...
-4
votes
1answer
61 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
0answers
31 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 ...
5
votes
2answers
319 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:
$$
\ce{Ferr}
\color{blue}{\ce{ous}}~\ce{...
1
vote
0answers
54 views
Electrode potential of Br2/HBr half cell
I am wondering if it is possible to find the electrode potential of such a half cell:
$$\ce{Br2 (l) + 2 e- <=> 2Br-(g)}$$
The standard electrode potential is for $\ce{Br-(aq)}.$ However, is it ...
0
votes
0answers
69 views
References for recommendation guidline values (cyclic hydrocarbons and i-alcylated hydrocarbons)
I am studying a measurement protocol of VOC emissions of a rubber gym flooring product and stumbled over some substances I didn't found any guideline values such that below this value it seems to be ...
2
votes
1answer
103 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 ...
5
votes
0answers
86 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 ...
1
vote
2answers
143 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 ...
8
votes
3answers
197 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
vote
0answers
144 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?
6
votes
1answer
220 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 ...
3
votes
0answers
62 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 ...
3
votes
2answers
73 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?
1
vote
1answer
67 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 ...
12
votes
1answer
673 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". There is a related chem.SE question. There ...
1
vote
0answers
131 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 ...
5
votes
1answer
195 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 ...
1
vote
1answer
66 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.
2
votes
0answers
25 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 ...
5
votes
2answers
274 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) ...
4
votes
2answers
611 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 ...
0
votes
0answers
140 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 ...
3
votes
1answer
60 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 ...
1
vote
0answers
40 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, ...
2
votes
0answers
20 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 ...
1
vote
0answers
34 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 ...
1
vote
1answer
69 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'...
1
vote
1answer
49 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 ...
0
votes
0answers
102 views
Where can I find literature values for standard molar enthalpies of neutralization?
I'm looking for enthalpy of neutralization literature values for inorganic weak acids. NIST, PubChem, etc. don't list them. Is there somewhere else I should look?
-2
votes
1answer
120 views
What is the electron configuration of platinum? [closed]
Some textbooks write the electron configuration for platinum (Pt) as $\ce{[Xe] 4f^14 5d^9 6s^1}$. However, some also write it as $\ce{[Xe] 4f^14 5d^8 6s^2}$. Which is correct?
I hope someone can help ...
1
vote
0answers
32 views
Molar conductivities of aqueous electrolytes at 1 M
In the following table from the CRC Handbook, molar conductivities of aqueous electrolytes are given for concentrations from infinite dilution to 0.1 M. However, I am looking for values at 1 M, and I'...
6
votes
1answer
468 views
Exact meaning of "degree of crosslinking" in polymer chemistry
In the ion-exchange chromatography literature, a term "degree of crosslinking" appears frequently. Ion exchange resins are typically made from divinylbenzene and styrene. One of the stated ...
1
vote
0answers
40 views
Concentration of sulfur in turbid solution
I recently participated in an experiment where I need to calculated the reaction orders and the reaction constant of the reaction:
$$\ce{8 Na2S2O3(aq) + 16 HCl(aq) -> S8(s) + 8 SO2(g) + 16 NaCl(aq) ...
1
vote
0answers
32 views
“Good” properties of transparent conducting oxides
I'm a computer scientist and I'm trying to figure out which are the key properties that define a “good” acting transparent conducting oxide (TCO) in order to consider several possible features to ...
2
votes
0answers
41 views
Is there a better coordinate framework and symmetry operator for constructing molecular orbitals of molecules with higher-order geometry?
The following excerpt is taken from [1] (with a few rewording, emphasizes are mine).
In an attempt to construct molecular orbital (MO) of any molecule, one needs to determine the symmetries of ...
1
vote
0answers
31 views
Reference for molecular orbital theory [duplicate]
I am studying electron collision with molecules, and came across with notation like this $\left(\mathrm{B}^{1} \Sigma_{u}^{+}, \mathrm{c}^{3} \Pi_{u}, \mathrm{a}^{3} \Sigma_{g}^{+}, \mathrm{C}^{1} \...
1
vote
2answers
163 views
"Encyclopedic" / semi-exhaustive reference work on Chemistry [closed]
I'm buying my brother a present—It's the holiday season after all. He's about to start his academic career in chemistry. I would like to give him a book on chemistry, but not something that is ...
1
vote
2answers
48 views
Thermal properties of aluminium alloy 6063 [closed]
I am looking for the operating temperature range both in a cold and hot environments (minimum and maximum operating temperatures) for aluminium alloy 6063.
I'm new to finding this kind of information ...
0
votes
1answer
82 views
How does the Hammett acidity function work and how to calculate it for [H2SO4] = 1,830? Any references?
I'm modelling the concentrations in the Belousov Zhabotinsky reaction. For this model, I need to convert [BrO3-] to [HBrO3]. I discovered in several papers that the following correlation applies:
$$ [\...
1
vote
0answers
97 views
Questions About an Appropriate Textbook on Electrochemistry for Self-Study
Apologies if this is a somewhat frequent request (I promise I did scour various sources before posting, but none quite applied to me), but I was hoping for some insight from the community regarding an ...
3
votes
1answer
685 views
Reference Request - bond lengths in PCl2F3
While writing an answer here, I needed references for bond lengths of $\ce{PF3Cl2}$ and $\ce{PF4Cl}$. The latter was easily found in reference (1), whereas I could not find exact references for bond ...
1
vote
0answers
30 views
Industry Standards of Polymer Leeching Measurement [closed]
I am a research assistant currently researching the leaching of polymers the byproducts of the reaction of ethanol and wood coating from wood billets into water and I'm at a crossroads with my ...
2
votes
0answers
129 views
What is "activated red phosphorus"?
[WP = white phosphorus ; RP = red phosphorus ; ARP = activated red phosphorus]
A YT channel, Extraction & Ire has a video from two years ago (2018) on converting WP to RP by keeping the former in ...
4
votes
1answer
953 views
Wittig reaction in presence of carboxylic acids
The following reaction came in a recent test:
According to this reaction, the acidic hydrogen would protonate the ylide, and the standard wittig reaction would not take place. This source agrees with ...
6
votes
0answers
227 views
Geometry of a free radical at the bridgehead carbon
With reference to J. Am. Chem. Soc. 1968, 90 (19), 5266–5267, they state:
The most favorable geometry of aliphatic free radicals remains an unsolved problem, since existing data are consistent with a ...
2
votes
0answers
79 views
Which amino acids can be totally synthesized? [closed]
I can't find information regarding which amino acids (say the proteinogenic ones or in general) can be totally synthesized. Is there a reference?
