Aromaticity in Heterocyclic Compounds

Name: Aromaticity in Heterocyclic Compounds
Brand: Springer Nature
SKU: 9783540683292
Availability: InStock

Aromaticity in Heterocyclic Compounds

Brand

Springer Nature

Manufacturer

N/A

Part Number

GTIN

9783540683292

Condition

New

0 Reviews

0 Questions | 0 Answers

Product Description

Aromaticity is a notion that appeared in the mid-nineteenth century to differentiate between unsaturated hydrocarbons and formally unsaturated benzene [13]. At the end of the nineteenth century it seemed that cyclicity was a necessary condition for differentiation between the two, but at the beginning of the twentieth century it turned out that the above assumption was not correct because cyclooctatetraene exhibited typical properties known for polyenes [4]. The essential property of b- zene-like compounds, often identified with aromatic compounds, was low react- ity. Hence thermodynamic stability was defined as resonance energy [5, 6] and was the first quantitative measure of aromaticity. Many theoretical approaches were proposed later to estimate this quantity, and now the criterion is often considered to be the most fundamental [7]. Almost at the same time, magnetic susceptibility was used to describe aromaticity [8, 9]. Consequently, many concepts based on mag- tism were developed, probably the most effective in assessment of aromaticity being nucleus independent chemical shift (NICS) [10] or Fowlers maps of ring currents [11]. The criterion served Schleyer as a basis for a definition of aromat- ity: Compounds which exhibit significantly exalted diamagnetic susceptibility are aromatic. Cyclic delocalisation may also result in bond length equalization, abn- mal chemical shifts and magnetic anisotropies, as well as chemical and physical properties which reflect energetic stabilisation[12].

Available Colors

N/A

Available Sizes

N/A

1 Offer Price Range: $259.00 - $259.00

BEST PRICE

Single Product Purchase

$233.10

@ Link.springer.com with extra coupon Get Coupon & BUY

Price Comparison

Seller	Contact Seller	List Price	On Sale	Shipping	Best Promo	Final Price	Volume Discount	Financing	Availability	Seller's Page
BEST PRICE 1 Product Purchase @ Link.springer.com Rate Seller This functionality is for registered users only. Go to Login/Register		$259.00	$259.00		10% OFF This deals requires coupon Get Code Here your10off @ Link.springer.com Deals Ends 31/08/2025	$233.10		See Site	In stock	Visit Store