Questions tagged [nomenclature]

This tag should be used for questions about the naming of compounds and elements, usually using systematic names according to IUPAC recommendations, but also using retained traditional names.

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2
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0answers
39 views

Can someone help with the nomenclature of this metal complex. MarvinSketch is giving me trouble

I’m trying to get a name for the structure above using MarvinSketch for my undergraduate senior thesis. This is the first time I’ve had to draw a metal complex in MarvinSketch, and I’m having trouble ...
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33 views

Coordination compound nomenclature for [Cu(acac)(bpy)]BPh4

The title says it all really. I thought it would be acetylacetonatobipyridinecopper(II) tetraphenylborate. Is this correct? I feel as though it looks a bit clumsy and wasn’t sure if I was supposed to ...
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Naming a cyclic organic compound with multiple functional groups [duplicate]

Why the IUPAC name of the compound is 5-hydroxycyclohex-3-en-1-one and not 3-hydroxycyclohex-4-en-1-one?
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What is the IUPAC name for the compound below? [duplicate]

For this compound, what is the IUPAC name?
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1answer
57 views

What should be the nomenclature of this organic compound?

I am confused with my teacher's explanation for the nomenclature of this organic compound. He said that we should start numbering from the sulphonic acid at the bottom of the structure. But one of ...
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1answer
37 views

Is the precedence of functional groups used in IUPAC naming arbitrary?

There seems to be a priority order that has to be followed while naming an organic compound with more than one functional group , according to IUPAC rules. I want to know if there is a basis on which ...
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3answers
194 views

What does *oxidizing* have to do with *hydrogen*? [closed]

An oxidizing acid is a Brønsted acid that is a strong oxidizing agent. All Brønsted acids can act as oxidizing agents, because the acidic proton can be reduced to hydrogen gas. (source: Wikipedia) ...
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1answer
34 views

Naming and structure of PtCl4.2HCl (complex/coordination compound)

Given that $\ce{PtCl4.2HCl}$ when reacted with excess of $\ce{AgNO3}$ produced zero moles of $\ce{AgCl}$, I understand that all the chlorine atoms are inside the coordination sphere. But what will the ...
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1answer
51 views

Should equiatomic iron–cobalt alloy be written as FeCo or CoFe?

I have an alloy made of 50% iron and 50% cobalt. I see occasionally in the literature this is written as FeCo alloy. But shouldn't it be CoFe alloy since the chemical symbols are supposed to be ...
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37 views

The reason behind the alphabetical order in nomenclature [closed]

I hope my question is not too dumb but hey I am learning from the beginning so when we have a compound such as 6-ethyl-3methylnonane, obvioysly we arrange the alkyl groups alphabetically. Then if we ...
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1answer
58 views

IUPAC Nomenclature of a dioic acid

I have to name the following organic cpd according to IUPAC. My attempt: I am unable to select a parent carbon chain as there are 2 carbon chains possible and I don’t know how do we proceed in such a ...
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2answers
947 views

What is the name origin of ester?

Ester is quite a random nomenclature for a compound derived from a parent acid and parent alcohol. Is there any reasoning behind using the word 'ester' to name such compound (for memorising purpose)? ...
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1answer
218 views

Nomenclature of unusual nitrogen functional group

I am trying to create a proflavine derivative containing a 1,2,4-oxadiazole-5-one functional group, the first step produces an interesting functional group that I have no idea how to name: $$\ce{[Pro]-...
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3answers
465 views

What do (2S,3S) and similar notations mean?

When my textbook is discussing stereoisomers with more than one chiral centers, it's using notation like (2S,3S) being an enantiomer with (2R,3R) and so forth. I understand R and S configuration, and ...
4
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2answers
72 views

Transition metal chalcogenides

According to wikipedia, a chalcogenide is a chemical compound consisting of at least one chalcogen anion and at least one more electropositive element. In the same sense does transition metal ...
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1answer
56 views

Anthracycline nomenclature - doxorubicin [closed]

Why $\ce{-OCH3}$ is Number 3? I think that $\ce{-OCH3}$ Appropriates Number one.
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1answer
253 views

Assigning R/S configuration

Question: Assign the R/S configurations to the carbons which are attached to different rings of this molecule (carbons 1 and 3 according to IUPAC numbering): My Solution I first started out by ...
5
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2answers
77 views

How is nomenclature decided in this case (formyl vs oxy)?

I was asked the IUPAC Name of the following compound in JEE Mains (2nd September, Shift 1) 2020. There were two names occuring to me: 5-formyl-2-methyl-hex-2-enoic acid (2,5)-dimethyl-6-oxo-hex-2-...
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1answer
58 views

For IUPAC nomenclature, does the number of multiple bonds take precedence over the chain length?

I've received a few mixed answers to this question. Some sources say when determining the parent chain for unsaturated hydrocarbons, the longest chain should be considered before the chain with the ...
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0answers
25 views

API for molecular classification

We would like to identify an application programming interface (API) which can be fed a SMILES string, PubChem CID, IUPAC name or equivalent, which returns a set of strings corresponding to molecule ...
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1answer
280 views

Nomenclature of K2(PdCl4) [closed]

In the compound $\ce{K2[PdCl4]}$, the oxidation state of Pd is +2 so as per the nomenclature rules, the name of the central metal inside the coordination is simple if it's a cation. So if we name the ...
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164 views

How to name this compound (Carboxylic acid+amide)?

It's the first one, I know that this solution is a mistake, but what is the true one? can we just use 5-amido?
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1answer
71 views

Polymerisation of a UV-curing resin

I have a photosensitive resin MSDS. It lists a mixture of 1,6-Hexanediol diacrylate ($\ce{C_{12}H_{18}O_4}$) with its proper CAS number and Polyurethane acrylate together with the CAS number of "...
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1answer
66 views

Alphanumeric preference between hexyl and heptyl

Our chemistry teacher taught us that hexyl (five letters) is preferred to heptyl (six letters) as hexyl has lesser number of letters. After searching many sources I could not find any such rule. Which ...
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2answers
79 views

why is NaClO 'liquid chlorine'?

Sodium hypochlorite. $\ce{NaOCl}$. Appears to be: one part sodium, one part chlorine, one part oxygen. Five questions: Couldn't it just as easily be 'liquid sodium' or 'liquid oxygen'? It's not ...
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3answers
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Is benzene a polymer of ethyne?

In one of my classes, my teacher told me that benzene can be formed by cyclic polymerization of ethyne. But I think that benzene isn't a polymer because only 3 ethyne molecules are combining to form ...
4
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1answer
133 views

Having trouble naming hydrocarbons with the IUPAC nomenclature rules

First of all, thanks a lot for taking the time. I'm homeschooling and don't currently have any proper teachers, so I thought this would be a good place to ask. Its an easy question I think, but it has ...
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1answer
54 views

Is tertiary-butyl same as neo-butyl?

By definition neoalkanes have two-times branching of methylgroup at second last carbon. But in no book which I could find ,it is not alternatively named as neo-butyl. Is the definition right, or am I ...
2
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1answer
102 views

Shouldn't this compound be called 2-methyl-5-(1,2-dimethylpropyl)nonane?

The book says that the name should have dimethylpropyl methyl nonane in that order. Shouldn't the methyl group come first since methyl comes before methylpropyl (in the alphabetic order)? Our prof ...
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1answer
72 views

ᴅ-amphetamine, ʟ-amphetamine

The following structural formula (source: Wikimedia) is labelled ᴅ-amphetamine: A Fischer projection of this molecule would contain, I think, the following line: $$\ce{H2N-C-H},$$ and I would have ...
10
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1answer
394 views

R/S configuration of bridging carbon in bicyclic system

I am trying to figure out the R and S configuration of bridging carbons in bicyclic systems. In the image, there are two bicyclic systems and depending on the position of the Br substituent, the R or ...
0
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1answer
96 views

Naming a given organic compound according to IUPAC naming rules

Would the given organic compound be called "3,4-diethyl-3,7,7-trimethylnonane" with IUPAC naming rules? I don't really know if this should be called 3,4-diethyl-3,7,7-trimethylnonane, ...
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4answers
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How were urolithins discovered and named?

Urolithin is a product of the degradation of ellagic acid by gut flora and has significant biological activity. (Wikipedia) I am curious as to how it was discovered but cannot find the story. Although ...
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2answers
66 views

Cis-trans isomerism with electron pairs [closed]

Is it possible to name compounds with lone pairs on the double bonded species using the cis-trans nomenclature? For instance, can't you name $\ce{Ph-N=N-Ph}$ by the relative position of the nitrogen ...
3
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2answers
223 views

Conversion of molecular structure into Fischer projection for compounds having more than two chiral carbons

Question What is the Fischer projection of the given compound's enantiomer? Answer My attempt I tried to solve this by first converting it into the Fischer projection of the given compound and then ...
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1answer
53 views

Absolute Configuration in Stereochemistry [closed]

I got all the rules of writing RS nomenclature for Perspective formula of chirality center only problem being, I m confused that given compound can have any configuration depending on how I write the ...
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48 views

Nomenclature of halogenoalkanes

Why is the following compound called "1,1,1-trifluoro-2-chloro-2-bromoethane"? Why is this not called "1-bromo-1-chloro-2,2,2,trifluoroethane" alphabetically? (the name, 1,1,1-...
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0answers
59 views

Name for H2O- radical? (H2O+ radical is Oxoniumyl)

Radical are atoms with unpaired electrons, and they have short lifetimes because the unpaired electrons are highly chemically reactive. The $\ce{H2O^{.+}}$ radical is named oxoniumyl. Is there a name ...
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2answers
47 views

Is the IUPAC name for this compound, 1,5,6-cyclohex-1-ene or 2,3,4-cyclohex-1-ene? [closed]

Is the IUPAC name for this compound, 1,5,6-cyclohex-1-ene or 2,3,4-cyclohex-1-ene?
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1answer
44 views

How to write the formula of a mixed metal salt?

I suppose the formula of the Sulphate salt of Sodium & Potassium is $\ce{KNaSO4}$ as the Pubchem site says so. So, is there any rule that in the formulae such mixed metal salts we need to write ...
4
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1answer
204 views

TKN: Why are they called Missouri tablets?

When analyzing for Total Kjeldahl Nitrogen (TKN), you can make a copper sulfate digestion solution in the lab or purchase a variety of pre-prepared digesting tablets for example on VWR. My question is,...
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59 views

Understanding formulas for PZT

In the slides i'm studying (about the production of PZT), is given the following formula for lead zirconate titanate : $$\ce{PbZr(Ti)O_3}$$ with the explanation: It is a solid solution of two oxides: ...
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1answer
97 views

Why is H5PO5 not called as phosphoric acid? [closed]

Recently, my course of inorganic chemistry has begun, and in the nomenclature of inorganic acids, our professor told that phosphoric acid is $\ce{H3PO4}$ and phosphorous acid (orthophosphorous acid) ...
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1answer
70 views

What is the name of this compound? [closed]

This doesn't look like an amide. What is its IUPAC name? Is this compound even possible?
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1answer
91 views

Naming a synthetic molecule from QM9 dataset [closed]

I was trying to write a name for a synthetic molecule in QM9 dataset. The molecule is: is 3-aminooxolane-2-carbonitrile a correct name for this?
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1answer
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Why Peroxydisulphuric Acid is also called as Marshall's Acid and Peroxymonosulphuric Acid as Caro's Acid? [closed]

I recently come across the oxaacids of Sulphur and got to know to Acids, $\ce{H2S2O8}$ and $\ce{H2SO5}$ as Marshall's Acid and Caro's Acid respectively, but I am just eager to know why they are named ...
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45 views

Why is this compound named (Z)-but-2-ene-1,1-diyldibenzene and not (Z)-1,1-diphenylbut-2-ene

A recent answer of mine involved the synthesis of the following compound: I initially assumed the name of this compound to be (Z)-1,1-diphenylbut-2-ene as the butene is the main chain, with two ...
14
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3answers
733 views

Can geometrical isomers be enantiomers?

I have just been pondering upon the question above. I have found this example and I am sure they are enantiomers, but do they also count as geometrical isomers?
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1answer
71 views

When we name an organic compound ,if there is double bond and a functional group which is now a substituent who has priority? [closed]

For example if a particular compound contains carboxylic acid, alcohol and double bond and the compound is such that we can either include double bond or alcohol in the main chain then who has ...
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51 views

E-Z system without a double bond

Can we apply E-Z nomenclature to geometrical isomers without a double bond. For example, can we use it for cis and trans isomers of 1,2-dimethylcyclohexane?

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