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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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Nomenclature of nitrogen containing organic compounds and ammonia derivatives [on hold]

I got stuck when names like imines, oximes, etc. come across. Please give me a list of nomenclature of important nitrogen containing compounds. It can't be found on google on one place, and I don't ...
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1answer
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How do I use the priority list of substituent groups to decide the parent chain for this compound?

I know that the -OH group has a higher priority than the -Cl group, but does that mean I should favour including it in my parent chain even if there's another chain that has a lower locant on the ...
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0answers
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Are Phenyl/Arenes functional group? [closed]

What are the number of functional groups is aspartame?Arenes are considered a class of compounds but are they functional group?What exactly are functional groups??
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2answers
32 views

Nomenclature of Coordination compounds [closed]

How to name a compound having anion and cation as a complex ion? I searched in the web for answer but in vain. I just have the problem in finding the oxidation number of the central metal atom. ...
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1answer
299 views

What would be the name of this compound? [closed]

Although I assume this compound is likely unable to be formed, my chemistry teacher put it up on the whiteboard to show the extent of what you can name using IUPAC nomenclature, out of interest I ...
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2answers
39 views

Confusion in the name of this organic compound

I think the name of the above compound should be 3-Ethyl-2-methylcyclohex-1-ene. However, according to my book (Organic Chemistry Resonance DLPD, page #43, question #5), this organic compound is 6-...
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1answer
39 views

Why 1-ethenyl-3-ethyl-5-ethynylbenzene has that name?

I would priorized these funtional groups based on two options (following the ciclohexane rules): Molecular weight Representing each pi bond as a alkane branch. e.g. Ethenil as a isopropil backbone. ...
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1answer
35 views

Nomenclature of carbohydrates

In the chapter on Biomolecules in my book, the following points are given regarding carbohydrates. Numbering the C-chain with consecutive rank The C-atom present in the aldehyde group of ...
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1answer
38 views

Organic Nomenclature [closed]

10.2 It has to add 4-propyl is that correct? And 10.3 why do we choose the position 1,5 instead of 2,3?
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1answer
37 views

Aminoethyl or ethylamine?

I was trying to name the above compound which happens to be 3-(2-aminoethyl)-2-methylcyclohexan-1-ol. On my first attempt, I had named it 3-(ethyl-2-amine)-2-methylcyclohexan-1-ol. Which one is ...
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1answer
44 views

What is the name of this organic compound?

The organic compound in question is shown above. This is how I tried to name it: Start from the left hanging $\ce{H_3C}$. $\ce{OH}$ gets the number 2 and $\ce{NH_2}$ gets 6. The lowest numbers ...
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1answer
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Bond-line structure of 2-methyl-3-phenyl-1-butanol

According to me the structure of 2-methyl-3-phenyl-1-butanol is the above one. Is my answer correct?
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2answers
48 views

How is 2-hydroxy-ethoxy named?

2-hydroxy-ethoxy is $\ce{HO-CH2-CH2-O}$. I have a couple of confusions regarding this substituent. Ethoxy is $\ce{-HO-CH2CH2}$ or $\ce{-OC2H5}$. So the $\ce{HO}$ in the above formula probably ...
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4answers
803 views

Largest alkane having a given alkane as its base name

What is the largest (most carbon atoms) alkane having heptane as its base name? For example, 2,2,3,3-tetramethylbutane is the largest (most carbon atoms) alkane retaining butane as its base name.
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1answer
28 views

Phase abbreviations for non-aqueous solutions

When writing a chemical equation, how do you indicate that a chemical is dissolved in a non-aqueous solvent? For example, it would be inappropriate to write X (aq) when X is dissolved in benzene, ...
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1answer
97 views

What should be the IUPAC name of the following compound?

I think it should be named as 2-(cyclopent-1,4-diene)-2-methyl ethan-2-ol
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0answers
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Confusion about prioritizing functional groups in case of poly functional organic compounds

According to Wikipedia, sulfonic acid $(\ce{-SO3H})$ is comparatively stronger than carboxylic acid $(\ce{-COOH})$. Then why is sulfonic acid lower in priority than carboxylic acid (while naming poly ...
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1answer
55 views

Question about Carboxylic Acid Nomenclature

According to my chemistry textbook, 2-hydroxy-1,2,3-propanetricarboxylic acid is represented as: But 5-bromoheptanoic acid is given as: In the former nomenclature, propane is taken as the base ...
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0answers
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Why do people commonly refer to Na2HPO4 as Sodium Hydrogen Phosphate, rather than Disodium Hydrogen Phosphate?

First of all, I am aware of this question. The purpose of my question is to understand why people seem to break the rules that IUPAC has set (See example five on page 76 of the book), especially ...
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3answers
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What is the name of this chemical LiB2PO4H7? [duplicate]

I was recently looking at a chemical equation calculator that balances equations for you. I came across a reaction that I am unsure about, it goes like this: B2H6 + LiH + PO4 = LiB2PO4H7 I was ...
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1answer
37 views

Why is this named 3-phenyl-2-butanol instead of 2-phenyl-3-butanol? [closed]

Why is the following compound named 3-phenyl-2-butanol and not 2-phenyl-3-butanol? Does the alcohol or the phenyl group have priority?
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1answer
48 views

Does an acetal need to have one hydrogen attached to its carbon?

I was asked to identify the functional groups in this molecule above. So far I have found an amide ($\ce{-NHAc}$), an ether ($\ce{-OBn}$), and a conjugated diene, but I was also told that there is ...
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1answer
52 views

Does the priority go for the longer substituent, the closer one, or one which contains a pi-bond in naming Alkenes and Alkynes?

According to the new IUPAC nomenclature, the longest chain is given the priority over that which contains the most number of double bonds. In naming this alkene: From which end would we start ...
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1answer
46 views

Ketone prefix organic chemistry nomenclature

Is there a difference between the prefixes keto- and oxo-?
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1answer
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Nomenclature priority of prefixes consisting of identical letters but containing different locants [closed]

I have no idea how to name this compound. Can someone please help give the IUPAC name for this? Also mention the IUPAC nomenclature rules followed while naming.
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1answer
52 views

What should be the IUPAC name of this compound?

I feel that either of 4-bromo-3-chlorocyclohex-1-en-5-yne or 3-bromo-4-chlorocyclohex-5-en-1-yne is correct.
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2answers
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The nomenclature behind “Diacetonamine”

Please explain how the name “Diacetonamine” can be found by looking at the formula: $$\ce{(CH3)2C(NH2)CH2C(O)CH3}$$ Why is it called “Diaceto” if there only one $\ce{-C(O)CH3}$ group?
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1answer
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IUPAC nomenclature of aspartame

I'd like some help in constructing the IUPAC name of aspartame: From what I understand there are carboxylic acid, amine, amide, ester, and phenyl groups - but I'm having trouble figuring out the ...
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1answer
43 views

Can benzene ring be the part of a acyl group

Can benzene ring attached to c=o i.e carbonyl group be considered as a acyl group?
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1answer
26 views

Differences in Glycerol Nomenclature [closed]

Could someone differentiate between the terms glycerol, glycerin, glyceryl and glyceride?
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0answers
42 views

Endo/Exo for same length bridges

I'm looking at a cycloaddition that produces a bicyclic intermediate, there are two different ways of doing the addition which can be described as endo/exo. However, all three bridges are the same ...
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2answers
124 views

I need the diagram of “cyclobutanal” [closed]

I doubted whether I can say cyclobutanal or not. Im confused and didn't found my answer anywhere
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1answer
36 views

How does NH4+ come to being?

There are 5 valence electrons in Nitrogen and in order for it to have a complete outer shell (8 electrons) it needs 3 more electrons. Why is it the case that the Nitrogen needs 4 Hydrogen instead of 3 ...
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1answer
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Formulation and Nomenclature of Boric and Phosphoric Acids

Why are boric and phosphoric acids are formulated as: H3BO3 H3PO4 Instead of: HBO2 HPO3 Because the acids end with the -ic suffix, the valences of the elements between the hydrogens and oxygens ...
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2answers
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Numbering in a derivative of azulene

I was wondering if anyone can tell me how to number this molecule: This molecule is derived from azulene by addition of two sulfurs and two oxygens at positions 2, 6, 1, and 5 respectively. I would ...
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0answers
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Iupac nomenclature problem [closed]

I am unable to write the iupac name of the following compound
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1answer
100 views

What chemicals have been named after Star Wars characters?

The molecule below is whimsically named Yoda1 because it "uses the force" to open channels in a class of animal proteins known as piezo ion channels (which appear to be part of their pressure sensing ...
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0answers
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What is correct cyclopenta[a]phenanthrene numbering?

IUPAC BlueBook 2013 states: P-25.3.3 Numbering fused ring systems Fused ring systems with retained names, systematic names, or fused names are systematically numbered in the same manner. ...
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1answer
24 views

Nomenclature of Coordination compounds containing nitrogen

As Per rules , amine when present as a ligand is written as "ammine" with double m's , so a compound having a complex ligand such as ethane-1,2-diamine , will be written with 1 'm' amine or double 'm' ...
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1answer
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Lowercase “a” in organic chemistry nomenclature?

In the IUPAC name for geosmin has a lowercase a mixed into it: (4​S,4a​S,8a​R)-4,8a-dimethyloctahydronaphthalen-4a(2​H)-ol. Does anyone know what it stands for or can reference me to a source that ...
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1answer
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Oxyanionic Series and Chemical names [closed]

If there is only 1 Oxyanion in a series, what is it’s prefix/suffix? Also, if I have Copper(I) Iodate, how do I know how many oxygen atoms are in the compound?
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1answer
41 views

Which are the radicals containing phosphorus in ATP?

The ATP molecule contains 3 $\ce P$ atoms linked through esteric bonds. The IUPAC name of triphosphate adenosine is "[[(2R,3S,4R,5R)-5-(6-aminopurin-9-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-...
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1answer
59 views

Vinyl vs Acryl IUPAC Usage [closed]

I have read that the word Vinyl and Acryl, both refer to the same group. The difference is that Acryl is used for naming when the functional group attached itself contains a carbon atom while Vinyl ...
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424 views

Inorganic IUPAC for Compounds with bridged ligands?

Can we use bis(tetraammine) instead of octaammine is the 2nd example ? As in the 1st example they used bis(pentaammine) and also in the 3 one the used bis(carbonylcyclopentadienyliron)
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Nomenclature in case when same fucnctional group is present more than once

here since Only CN group is present, it is the major functional group. In this molec. we cannot have a chain which has carbons of all CN group. hence in such compounds we do not take any carbon of cn ...
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1answer
123 views

IUPAC name for branched alkane

I'm trying to apply IUPAC rules to name the compound below. TLDR: Why is this 3-ethyl-2,3,4-trimethylpentane and not 2,3-dimethyl-3-(1-methylethyl)-pentane? Is this the correct source to use? ...
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Octa-4,6-dien-2-yne or Octa-2,4-dien-6-yne?

I read in my book that if the least sum rule is same for both double bond and triple bond then we give double bond priority. According to that the 2nd name should be the correct one where lowest ...
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1answer
954 views

What is the correct name of 3-isopropyl-4-methylhexane?

In the branched alkane shown above, I've been told that 3-isopropyl-4-methylhexane is supposedly the correct name. However, in the alternative numbering scheme on the right, the parent chain is still ...
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1answer
151 views

IUPAC names of imines [closed]

How to write IUPAC name for this imine compound?
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1answer
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Why is 5-(aminomethyl)-3-ethylheptan-2-ol named so?

Why is 5-(aminomethyl)-3-ethylheptan-2-ol named so and not 6-amino-3,5-diethyl-heptan-2-ol? I.e why is the amine part not taken in the longest chain since it is a functional group with a definite ...