Next Article in Journal / Special Issue
A Cadmium Anionic 1-D Coordination Polymer {[Cd(H2O)6][Cd2(atr)22-btc)2(H2O)4] 2H2O}n within a 3-D Supramolecular Charge-Assisted Hydrogen-Bonded and π-Stacking Network
Previous Article in Journal
Preparation, Crystal and Properties of Nitrogen-Rich Energetic Salt of Bis(semicarbazide) 5,5′-Bitetrazole-1,1′-diolate
Previous Article in Special Issue
H2XP:OH2 Complexes: Hydrogen vs. Pnicogen Bonds
Article Menu

Export Article

Open AccessFeature PaperArticle
Crystals 2016, 6(3), 22; doi:10.3390/cryst6030022

Charge-Assisted Hydrogen-Bonded Networks of NH4+ and [Co(NH3)6]3+ with the New Linker Anion of 4-Phosphono-Biphenyl-4′-Carboxylic Acid

Institut für Anorganische Chemie und Strukturchemie, Universitätsstraße 1, 40225 Düsseldorf, Germany
*
Author to whom correspondence should be addressed.
Academic Editor: Sławomir J. Grabowski
Received: 30 January 2016 / Revised: 19 February 2016 / Accepted: 22 February 2016 / Published: 24 February 2016
(This article belongs to the Special Issue Analysis of Hydrogen Bonds in Crystals)
View Full-Text   |   Download PDF [1980 KB, uploaded 24 February 2016]   |  

Abstract

The new linker molecule 4-phosphono-biphenyl-4′-carboxylic acid (H2O3P-(C6H4)2-COOH, H3BPPA) has been structurally elucidated in hydrogen-bonded networks with the ammonium cation NH4(H2BPPA)(H3BPPA) (1) and the hexaamminecobalt(III) cation [Co(NH3)6](BPPA)·4H2O (2). The protic O-H and N-H hydrogen atoms were found and refined in the low-temperature single-crystal X-ray structures. The hydrogen bonds in both structures are so-called charge-assisted; that is, the H-bond donor and/or acceptor carry positive and/or negative ionic charges, respectively. The H-bonded network in 1 consists of one formally mono-deprotonated 4-phosphonato-biphenyl-4′-carboxylic acid group; that is, a H2BPPA anion and a neutral H3BPPA molecule, which together form a 3D hydrogen-bonded network. However, an almost symmetric resonance-assisted hydrogen bond (RAHB) bond [O···H = 1.17 (3) and 1.26 (3) Å, O···H···O = 180 (3)°] signals charge delocalization between the formal H2BPPA anion and the formally neutral H3BPPA molecule. Hence, the anion in 1 is better formulated as [H2BPPA···H···H2BPPA]. In the H-bonded network of 2 the 4-phosphonato-biphenyl-4′-carboxylic acid is triply deprotonated, BPPA3−. The [Co(NH3)6]3+ cation is embedded between H-bond acceptor groups, –COO and –PO3 and H2O molecules. The incorporation of sixteen H2O molecules per unit cell makes 2 an analogue of the well-studied guanidinium sulfonate frameworks. View Full-Text
Keywords: hydrogen-bonded network; phosphonate-carboxylate; symmetric hydrogen bond; crystal engineering; charge-assisted H-bonds hydrogen-bonded network; phosphonate-carboxylate; symmetric hydrogen bond; crystal engineering; charge-assisted H-bonds
Figures

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Supplementary material

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Heering, C.; Nateghi, B.; Janiak, C. Charge-Assisted Hydrogen-Bonded Networks of NH4+ and [Co(NH3)6]3+ with the New Linker Anion of 4-Phosphono-Biphenyl-4′-Carboxylic Acid. Crystals 2016, 6, 22.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Crystals EISSN 2073-4352 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top