skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Synthesis and structure determination of Co(HNCN){sub 2} and Ni(HNCN){sub 2}

Abstract

Well-crystallized cobalt and nickel hydrogencyanamide, Co(HNCN){sub 2} and Ni(HNCN){sub 2}, were synthesized from the corresponding ammonia complexes [M(NH{sub 3}){sub 6}]{sup 2+} under aqueous cyanamide conditions. The X-ray and neutron powder data evidence the orthorhombic system and space group Pnnm. The cell parameters for Co(HNCN){sub 2} are a=6.572(1), b=8.805(2), c=3.267(1) A, and Z=2; for the isotypic Ni(HNCN){sub 2}, the cell parameters arrive at a=6.457(1), b=8.768(2), c=3.230(1) A. The octahedral coordinations of the metal ions are marginally squeezed, with interatomic distances of 4xCo-N=2.134(5) A, 2xCo-N=2.122(9) A, and 4xNi-N=2.133(6) A, 2xNi-N=2.035(11) A. The HNCN{sup -} units appear as slightly bent (177.5(2){sup o} for Co(HNCN){sub 2} and 175.7(2){sup o} for Ni(HNCN){sub 2}) and exhibit cyanamide shape character due to triple- and single-bond C-N distances (1.20(2) vs. 1.33(2) A for Co(HNCN){sub 2} and 1.15(2) vs. 1.38(2) A for Ni(HNCN){sub 2}). The infrared vibration data compare well with those of the three existing alkali-metal hydrogencyanamides. - Graphical abstract: Crystal structure of Co(HNCN){sub 2} and Ni(HNCN){sub 2} with Co/Ni atoms as white, N as grey, C as dark-grey, and H as light-grey balls.

Authors:
 [1];  [1];  [1];  [2]
  1. Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52056 Aachen (Germany)
  2. Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52056 Aachen (Germany), E-mail: drons@HAL9000.ac.rwth-aachen.de
Publication Date:
OSTI Identifier:
21015652
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Solid State Chemistry; Journal Volume: 180; Journal Issue: 1; Other Information: DOI: 10.1016/j.jssc.2006.10.021; PII: S0022-4596(06)00558-5; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; AMMONIA; COBALT COMPLEXES; COBALT COMPOUNDS; CYANAMIDES; ELECTRON DIFFRACTION; INTERATOMIC DISTANCES; NICKEL COMPLEXES; NICKEL COMPOUNDS; ORTHORHOMBIC LATTICES; SPACE GROUPS; SYNTHESIS; X-RAY DIFFRACTION

Citation Formats

Krott, Manuel, Liu, Xiaohui, Mueller, Paul, and Dronskowski, Richard. Synthesis and structure determination of Co(HNCN){sub 2} and Ni(HNCN){sub 2}. United States: N. p., 2007. Web. doi:10.1016/j.jssc.2006.10.021.
Krott, Manuel, Liu, Xiaohui, Mueller, Paul, & Dronskowski, Richard. Synthesis and structure determination of Co(HNCN){sub 2} and Ni(HNCN){sub 2}. United States. doi:10.1016/j.jssc.2006.10.021.
Krott, Manuel, Liu, Xiaohui, Mueller, Paul, and Dronskowski, Richard. Mon . "Synthesis and structure determination of Co(HNCN){sub 2} and Ni(HNCN){sub 2}". United States. doi:10.1016/j.jssc.2006.10.021.
@article{osti_21015652,
title = {Synthesis and structure determination of Co(HNCN){sub 2} and Ni(HNCN){sub 2}},
author = {Krott, Manuel and Liu, Xiaohui and Mueller, Paul and Dronskowski, Richard},
abstractNote = {Well-crystallized cobalt and nickel hydrogencyanamide, Co(HNCN){sub 2} and Ni(HNCN){sub 2}, were synthesized from the corresponding ammonia complexes [M(NH{sub 3}){sub 6}]{sup 2+} under aqueous cyanamide conditions. The X-ray and neutron powder data evidence the orthorhombic system and space group Pnnm. The cell parameters for Co(HNCN){sub 2} are a=6.572(1), b=8.805(2), c=3.267(1) A, and Z=2; for the isotypic Ni(HNCN){sub 2}, the cell parameters arrive at a=6.457(1), b=8.768(2), c=3.230(1) A. The octahedral coordinations of the metal ions are marginally squeezed, with interatomic distances of 4xCo-N=2.134(5) A, 2xCo-N=2.122(9) A, and 4xNi-N=2.133(6) A, 2xNi-N=2.035(11) A. The HNCN{sup -} units appear as slightly bent (177.5(2){sup o} for Co(HNCN){sub 2} and 175.7(2){sup o} for Ni(HNCN){sub 2}) and exhibit cyanamide shape character due to triple- and single-bond C-N distances (1.20(2) vs. 1.33(2) A for Co(HNCN){sub 2} and 1.15(2) vs. 1.38(2) A for Ni(HNCN){sub 2}). The infrared vibration data compare well with those of the three existing alkali-metal hydrogencyanamides. - Graphical abstract: Crystal structure of Co(HNCN){sub 2} and Ni(HNCN){sub 2} with Co/Ni atoms as white, N as grey, C as dark-grey, and H as light-grey balls.},
doi = {10.1016/j.jssc.2006.10.021},
journal = {Journal of Solid State Chemistry},
number = 1,
volume = 180,
place = {United States},
year = {Mon Jan 15 00:00:00 EST 2007},
month = {Mon Jan 15 00:00:00 EST 2007}
}