The structure of carbonate ion ( CO 3 2 − ) coordinating to a metal ion as a monodentate and as a bidentate ligand is to be stated. Structure of carbonate ion bridging between two metal ions is to be stated. Concept introduction: Monodentate ligands are those ligands that can donate one pair of electrons to the central atom, whereas bidentate ligands are those ligands that can donate two pair of electrons to the central atom. To draw: The structure of carbonate ion ( CO 3 2 − ) coordinating to a metal ion as a monodentate and as a bidentate ligand.

Question

NMR spectrum of ethyl acetate has signals whose chemical shifts are indicated below. Which hydrogen or set of hydrogens corresponds to the signal at 4.1 ppm? Select the single best answer. The H O HỌC—C—0—CH, CH, 2 A ethyl acetate H NMR: 1.3 ppm, 2.0 ppm, 4.1 ppm Check OA B OC ch B C Save For Later Submit Ass © 2025 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center |

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Chapter 20, Problem 41E

Interpretation Introduction

Interpretation: The structure of carbonate ion (CO32−) coordinating to a metal ion as a monodentate and as a bidentate ligand is to be stated. Structure of carbonate ion bridging between two metal ions is to be stated.

Concept introduction: Monodentate ligands are those ligands that can donate one pair of electrons to the central atom, whereas bidentate ligands are those ligands that can donate two pair of electrons to the central atom.

To draw: The structure of carbonate ion (CO32−) coordinating to a metal ion as a monodentate and as a bidentate ligand.

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NMR spectrum of ethyl acetate has signals whose chemical shifts are indicated below. Which hydrogen or set of hydrogens corresponds to the signal at 4.1 ppm? Select the single best answer. The H O HỌC—C—0—CH, CH, 2 A ethyl acetate H NMR: 1.3 ppm, 2.0 ppm, 4.1 ppm Check OA B OC ch B C Save For Later Submit Ass © 2025 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center |

How many signals do you expect in the H NMR spectrum for this molecule? Br Br Write the answer below. Also, in each of the drawing areas below is a copy of the molecule, with Hs shown. In each copy, one of the H atoms is colored red. Highlight in red all other H atoms that would contribute to the same signal as the H already highlighted red Note for advanced students: In this question, any multiplet is counted as one signal. 1 Number of signals in the 'H NMR spectrum. For the molecule in the top drawing area, highlight in red any other H atoms that will contribute to the same signal as the H atom already highlighted red. If no other H atoms will contribute, check the box at right. Check For the molecule in the bottom drawing area, highlight in red any other H atoms that will contribute to the same signal as the H atom already highlighted red. If no other H atoms will contribute, check the box at right. O ✓ No additional Hs to color in top molecule ง No additional Hs to color in bottom…

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