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Ch.21 - Transition Elements and Coordination Chemistry
McMurry - Chemistry 8th Edition
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모든 교과서McMurry 8th EditionCh.21 - Transition Elements and Coordination Chemistry문제 21.78b
21장, 문제 21.78b

What is the systematic name for each of the following ions? 
(c) [Co(CO3)3]3-
(d) [Pt(en)2(SCN)2]2+

검증된 단계별 안내
1
Identify the central metal ion in each complex: (c) Cobalt (Co), (d) Platinum (Pt).
Determine the oxidation state of the central metal ion by considering the charges of the ligands and the overall charge of the complex: (c) Carbonate (CO_3) is a -2 charge ligand, (d) Ethylenediamine (en) is a neutral ligand and thiocyanate (SCN) is a -1 charge ligand.
For complex (c), calculate the oxidation state of cobalt: Let x be the oxidation state of Co. The equation is x + 3(-2) = -3. Solve for x.
For complex (d), calculate the oxidation state of platinum: Let y be the oxidation state of Pt. The equation is y + 2(0) + 2(-1) = +2. Solve for y.
Name the complexes using the IUPAC naming conventions: (c) Use the oxidation state of cobalt and the name of the ligands to form the name. (d) Use the oxidation state of platinum and the name of the ligands to form the name.

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주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Coordination Compounds

Coordination compounds consist of a central metal atom bonded to surrounding molecules or ions called ligands. The arrangement and type of ligands influence the properties and naming of the compound. Understanding the structure of coordination complexes is essential for determining their systematic names.
추천 영상:
가이드 코스
01:32
Coordination Compound Naming

Ligands and Their Naming

Ligands are ions or molecules that donate electron pairs to the central metal atom in a coordination complex. They can be classified as monodentate, bidentate, or polydentate based on the number of donor atoms. The naming of ligands follows specific conventions, such as using prefixes to indicate the number of ligands present.
추천 영상:
가이드 코스
02:03
Ligand Naming

Oxidation States and Charge

The oxidation state of a metal in a coordination compound is crucial for determining its systematic name. The overall charge of the complex ion must be considered, as it affects the naming convention. For example, the oxidation state of cobalt in [Co(CO3)3]3- must be calculated to accurately name the compound.
추천 영상:
가이드 코스
02:42
Oxidation Numbers
관련 실천
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Predict the number of unpaired electrons for each of the following.

(c) Mn3+

(d) Cr2+

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Cobalt(III) trifluoroacetylacetonate, Co(tfac)3, is a sixcoordinate, octahedral metal chelate in which three planar, bidentate tfac ligands are attached to a central Co atom:

(b) Diastereoisomers A and B have dipole moments of 6.5 D and 3.8 D, respectively. Which of your diastereoisomers is A and which is B?

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교과서 질문

Tell how many diastereoisomers are possible for each of the following complexes, and draw their structures. 

(c) [Cu(H2O)4Cl2]+

(d) Ru(NH3)3I3

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교과서 질문

Give a valence bond description of the bonding in each of the following complexes. Include orbital diagrams for the free metal ion and the metal ion in the complex. Indicate which hybrid orbitals the metal ion uses for bonding, and specify the number of unpaired electrons. 

(b) [NiBr4]2- (tetrahedral) 

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교과서 질문

Nickel(II) complexes with the formula NiX2L2, where X is Cl- or N-bonded NCS- and L is the monodentate triphenylphosphine ligand P(C6H5)3, can be square planar or tetrahedral.

(b) If NiCl2L2 is paramagnetic and Ni(NCS)2L2 is diamagnetic, which of the two complexes is tetrahedral and which is square planar?

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교과서 질문

Look at the location in the periodic table of elements A, B, C, and D. What is the electron configuration of the transition metal in each of the following ions?  

(a) A2+

(b) B+

108
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