Wednesday Lecture Notes

(Polar molecules, Non-polar molecules, etc.)

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aisteles1G
Posts: 117
Joined: Fri Sep 28, 2018 12:15 am

Wednesday Lecture Notes

Postby aisteles1G » Wed Nov 28, 2018 4:37 pm

Hello, So I missed lecture today, Wednesday the 28th, would anyone be willing to post their notes from lecture as well as any important announcements Lavelle might have made that I missed? I would greatly appreciate it, thanks in advance! :)

rikolivares
Posts: 24
Joined: Fri Sep 28, 2018 12:23 am

Re: Wednesday Lecture Notes

Postby rikolivares » Thu Nov 29, 2018 12:41 pm

i wasn't able to copy everything down, and Professor Lavelle didn't have any important announcements.

naming coordination compounds
    (greek prefix) ligand names alphabetical order then tm (transition metal) cation name (roman numeral)
    if there are anions, then anion name (greek prefix) hydrate
    [Co(NH3)5Cl]Cl . 2H2O penta ammine chloro cobalt(ii) chloride dihydrate
    -AMMONIA IS AMMINE WHEN ATTACHED TO A TRANSITION METAL
    -chloride to chloro
    -NH3 has charge of 0, H2O has charge of zero, Cl usually has charge of -1, it is neutral so Co should be 2
    ligand name before tm metal ion
    use prefix to indicate number of ligands (mono, di, tri, tetra, penta, hexa)
    see textbook for ligand names
    if ligand has name with di, tri, tetra or polydentate then use prefixes bis, tris, tetrakis, pentakis
    tm cation name (oxidation state) before anion name
    if complex has negative charge add ATE to end of metal name

biological importance of coordination compounds
    tm have many oxidation states: good for e- transfer, can switch between them bc energies are similar
    tm often bound to a cage-like molecule, like e.g. porphyric ligand: tetradentate square planar 4n
    -fe bound to porphyrin ligand, myoglobin (fe binds 1 o2)
    -transport of o2 in muscle cells, releases where oxygen pressure is low
    -hemoglobin has 4 myoglobin-like molecules: binds 4 O2
acids and bases
    acids: vinegar, acetic acid
    -loses H+ & H2O picks up H+ to form hydronium ion, H3O+
    a) e.g. HCl (aq) + H2O (l) = H3O+ (aq) + Cl- (aq)
    -acid is a proton donor (bronsted acid)
    a) hydrogen chloride hydrochloric acid (aq)
    b) hydrogen bromide or hydrobromic acid (aq)
    c) nitric aid HNO3 (NO3-)
    d) sulfuric acid H2SO4 (SO42-)
    e) species that accepts e- pair (lewis acid)
    f) weak acids: carbonic acid (H2CO3) and benzoic acid (C6H5COOH)
    -organic acid group, carboxyl group
    -most common acid functional group

Lauren Ho 2E
Posts: 70
Joined: Tue Oct 09, 2018 12:16 am

Re: Wednesday Lecture Notes

Postby Lauren Ho 2E » Thu Nov 29, 2018 12:55 pm

Thank you so much!!

aisteles1G
Posts: 117
Joined: Fri Sep 28, 2018 12:15 am

Re: Wednesday Lecture Notes

Postby aisteles1G » Fri Nov 30, 2018 7:45 am

rikolivares wrote:i wasn't able to copy everything down, and Professor Lavelle didn't have any important announcements.

naming coordination compounds
    (greek prefix) ligand names alphabetical order then tm (transition metal) cation name (roman numeral)
    if there are anions, then anion name (greek prefix) hydrate
    [Co(NH3)5Cl]Cl . 2H2O penta ammine chloro cobalt(ii) chloride dihydrate
    -AMMONIA IS AMMINE WHEN ATTACHED TO A TRANSITION METAL
    -chloride to chloro
    -NH3 has charge of 0, H2O has charge of zero, Cl usually has charge of -1, it is neutral so Co should be 2
    ligand name before tm metal ion
    use prefix to indicate number of ligands (mono, di, tri, tetra, penta, hexa)
    see textbook for ligand names
    if ligand has name with di, tri, tetra or polydentate then use prefixes bis, tris, tetrakis, pentakis
    tm cation name (oxidation state) before anion name
    if complex has negative charge add ATE to end of metal name

biological importance of coordination compounds
    tm have many oxidation states: good for e- transfer, can switch between them bc energies are similar
    tm often bound to a cage-like molecule, like e.g. porphyric ligand: tetradentate square planar 4n
    -fe bound to porphyrin ligand, myoglobin (fe binds 1 o2)
    -transport of o2 in muscle cells, releases where oxygen pressure is low
    -hemoglobin has 4 myoglobin-like molecules: binds 4 O2
acids and bases
    acids: vinegar, acetic acid
    -loses H+ & H2O picks up H+ to form hydronium ion, H3O+
    a) e.g. HCl (aq) + H2O (l) = H3O+ (aq) + Cl- (aq)
    -acid is a proton donor (bronsted acid)
    a) hydrogen chloride hydrochloric acid (aq)
    b) hydrogen bromide or hydrobromic acid (aq)
    c) nitric aid HNO3 (NO3-)
    d) sulfuric acid H2SO4 (SO42-)
    e) species that accepts e- pair (lewis acid)
    f) weak acids: carbonic acid (H2CO3) and benzoic acid (C6H5COOH)
    -organic acid group, carboxyl group
    -most common acid functional group


Thank you I really appreciate it!! :)


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