November 30, 2021, 07:19:35 AM
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91
Undergraduate General Chemistry Forum / What is the product of Na2CO3 + CuSO4*5H2O?
« Last post by myst37 on November 23, 2021, 02:07:36 PM »
Could someone please tell me what's the product of the reaction: Na2CO3 + CuSO4·5H2O

I know that one of them is CuCO3.
92
Chemical Engineering Forum / Re: Bromate in Distilled Water
« Last post by Borek on November 23, 2021, 01:31:05 PM »
It doesn't say anything that would go against what I wrote - distilled water should not contain bromides that can be oxidized to bromates.
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Chemical Engineering Forum / Re: Bromate in Distilled Water
« Last post by beebug on November 23, 2021, 10:34:20 AM »
I was able to find this, but most of it goes over my head…. Can anyone explain in layman terms and whether it may in fact mean breathing in bromate from a humidifier? That is my main concern, as I’m not drinking ozonated distilled water, just using it in a humidifier.

https://www.wateronline.com/doc/ozone-in-water-purification-and-bromate-formation-0001
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Organic Chemistry Forum / Re: Catalytic asymmetric 1,4 reaction, need help please
« Last post by clarkstill on November 23, 2021, 08:45:56 AM »
Don't think you've attached anything...
95
High School Chemistry Forum / Re: Hydroesterification styrene
« Last post by Orcio_Dojek on November 23, 2021, 08:04:24 AM »
Quote
In the exercise they gave me the complex  : [(dippe)Ni(PhCHCH2)], CO, MeOH and a styrene. So, for me, the complex got 16 electrons because dippe and styrene are L ligands, and Ni° = 10 electrons. In the first step of the mechanism they said that the oxidation state of my complex is changed by 2 units. So that means that 2 ligands X are added on my Nickel.
If addition of 2 ligands means change of oxidation state by 2 units (increase or decrease), then how is this compatible with [(dippe)Ni(PhCHCH2)] and Ni0 = 10 electrons that you have write here ? Because both "dippe" [(CH3)2CH]2-P-CH2-CH2-[CH(CH3)2]2 and styrene does not look like potential oxidizers / reductants (one must did oxidize Ni0, second reduce it back).
96
Organic Chemistry Forum / Catalytic asymmetric 1,4 reaction, need help please
« Last post by RBatxer on November 23, 2021, 07:17:51 AM »
Hi, everyone. Struggling to complete this mechanism. just to add It uses a chiral catalyst, i used diphenylprolinol silyl ether. I've attached an image of my progress along with the reaction im trying to complete, not sure if what i've done is right or wrong so forgive me for any dumb mistakes :)
97
High School Chemistry Forum / Hydroesterification styrene
« Last post by Soulja on November 23, 2021, 05:22:49 AM »
Hello guys, I need your help on an exercise. I have to write the mechanism of hydroesterification of styrene. In the exercise they gave me the complex  : [(dippe)Ni(PhCHCH2)], CO, MeOH and a styrene. So, for me, the complex got 16 electrons because dippe and styrene are L ligands, and Ni° = 10 electrons. In the first step of the mechanism they said that the oxidation state of my complex is changed by 2 units. So that means that 2 ligands X are added on my Nickel. But I don't know which ligands are linked to my nickel. Is that styrene ?

Thank you for your help (sorry for my English, not my first language).
98
Organic Chemistry Forum / Re: Synthesis Challenge (aka POTW)
« Last post by rolnor on November 23, 2021, 03:41:30 AM »
Its very fun that you make this scheme, its a lot to discuss!
I think the first step is very problematic, if you look at the product, it has very acidic protons and a aldehyde in the same molecule and you use basic conditions for the reaction, I think you will get a lot of ringclosure/polymerisation sidereactions. If this reaction is not published I doubt that it is possible.
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Organic Chemistry Forum / Re: Synthesis Challenge (aka POTW)
« Last post by phth on November 22, 2021, 04:11:32 PM »
a solution to the challenging one.. 16 steps

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