A PHP Error was encountered

Severity: Warning

Message: file_get_contents(https://...@pubfacts.com&api_key=b8daa3ad693db53b1410957c26c9a51b4908&a=1): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests

Filename: helpers/my_audit_helper.php

Line Number: 176

Backtrace:

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 176
Function: file_get_contents

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 250
Function: simplexml_load_file_from_url

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 3122
Function: getPubMedXML

File: /var/www/html/application/controllers/Detail.php
Line: 575
Function: pubMedSearch_Global

File: /var/www/html/application/controllers/Detail.php
Line: 489
Function: pubMedGetRelatedKeyword

File: /var/www/html/index.php
Line: 316
Function: require_once

4,4'-Bis(benzimidazol-1-yl)biphen-yl. | LitMetric

4,4'-Bis(benzimidazol-1-yl)biphen-yl.

Acta Crystallogr Sect E Struct Rep Online

Department of Chemistry, Nankai University, Tianjin 300071, People's Republic of China.

Published: December 2007

The mol-ecule of the title compound, C(26)H(18)N(4), resides on a crystallographic inversion centre with a dihedral angle of 44.94 (5)° between the benzimidazole ring system and the benzene ring. The primary hydrogen bond is C-H⋯N and inversion-related pairs of these generate a chain of rings along the c-axis direction; π⋯π stacking involving the benzimidazole groups with inter-planar separations of ca 3.4 Å complete the inter-actions.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2915210PMC
http://dx.doi.org/10.1107/S1600536807063350DOI Listing

Publication Analysis

Top Keywords

44'-bisbenzimidazol-1-ylbiphen-yl mol-ecule
4
mol-ecule title
4
title compound
4
compound c26h18n4
4
c26h18n4 resides
4
resides crystallographic
4
crystallographic inversion
4
inversion centre
4
centre dihedral
4
dihedral angle
4

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!