✦ LIBER ✦

Ring-current effects in the nmr of nucleic acids: A graphical approach

✍ Scribed by Claude Giessner-Prettre; Bernard Pullman; Philip N. Borer; Lou-Sing Kan; Paul O. P. Ts'O

Publisher: Wiley (John Wiley & Sons)
Year: 1976
Tongue: English
Weight: 470 KB
Volume: 15
Category: Article
ISSN: 0006-3525
DOI: 10.1002/bip.1976.360151114

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The spatial dependence of the ring‐current magnetic anisotropy of nucleic acid bases is presented in a series of graphs in cylindrical coordinates. The curves may be used to calculate the ring‐current shift at a point in a cylinder of radius 10Å extending 8 Å above and below each ring of the base. These distance effects are found to influence considerably the predicted chemical shifts of nucleic acid protons, particularly in RNA duplexes. The contribution of polarization (electric field) effects and the diamagnetic anisotropy of individual atoms (local Δ~χ~) are briefly discussed.

📜 SIMILAR VOLUMES

A theoretical investigation on the effec

A theoretical investigation on the effect of remote amino groups in hydrogen bonding of nucleic acids

✍ Manuel Rueda; F. J. Luque; M. Orozco 📂 Article 📅 2001 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 180 KB 👁 2 views

Transmission of polar substituent effect

Transmission of polar substituent effects in the adamantane ring system as monitored by 19F NMR

✍ William Adcock; Neil A. Trout 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 268 KB 👁 2 views

An extensive series of (E)/(Z)-5-substituted(X)adamant-2-yl Ñuorides (2 and 3, respectively) and (E)/ (Z)-4-substituted(X)adamant-1-yl Ñuorides (4 and 5, respectively) were synthesized and characterized and their 19F chemical shifts measured in several solvents. Correlation of the 19F substituent ch

Deleterious Effects of Arsenic on the Nu

Deleterious Effects of Arsenic on the Nucleic Acids and Protein Metabolism in the Liver ofHeteropneustes fossilis (BL.) — a Freshwater Teleost

✍ Shukla, J. Pd. ;Dwivedi, U. N. ;Tewari, P. ;Prasad, M. 📂 Article 📅 1985 🏛 John Wiley and Sons 🌐 English ⚖ 211 KB 👁 2 views

Hydrogen Bonding Effects on the 13C NMR

Hydrogen Bonding Effects on the 13C NMR Chemical Shift Tensors of Some Amino Acids in the Solid State

✍ Guang Zheng; Liming Wang; Jianzhi Hu; Xiaodong Zhang; Lianfang Shen; Chaohui Ye; 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 164 KB 👁 2 views

The inÑuence of hydrogen bonding (HB) on the 13C chemical shift tensors in four solid amino acids was studied by the ab initio gauge-included atomic orbital (GIAO) approach. The results of the present calculations were compared with those predicted previously and with the experimentally observed shi

Through-space transmission of polar subs

Through-space transmission of polar substituent effects in the bicyclo[1.1.1]pentane ring system as monitored by 119Sn NMR chemical shifts: a 13C and 119Sn NMR study of 3-substituted-(X)bicyclo[1.1.1]pent-1-yltrimethylstannanes

✍ William Adcock; Alexander R. Krstic 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 279 KB 👁 3 views

A series of 3-substituted(X)bicyclo [ 1.1.1 ] pent-1-yltrimethylstannanes (3) were synthesized and their 119Sn and 13C NMR spectra were recorded. The 119Sn substituent chemical shifts (SCS) and the one-bond carbon-tin coupling constants [ 1J(13C,119Sn) ] were analyzed in terms of possible substituen