the number of coordinated species surrounding the central atom in a complex or crystal
coordination number in American English
noun
Crystallography
the number of anions surrounding a single cation in a stable crystal structure
Word origin
[1905–10]This word is first recorded in the period 1905–10. Other words that entered Englishat around the same time include: airway, revolving door, stabilizer, thiamine, white list
Examples of 'coordination number' in a sentence
coordination number
The complexes exhibit coordination number 4 or 6.
A.P. Mishra, Rajendra K. Jain 2014, 'Conventional and microwave synthesis, spectral, thermal and antimicrobial studiesof some transition metal complexes containing 2-amino-5-methylthiazole moiety', Journal of Saudi Chemical Societyhttp://www.sciencedirect.com/science/article/pii/S1319610311001748. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Such regularities are observed strictly up to the coordination number 4.
KUDRYAVTSEV Pavel Gennadievich 2018, 'Structure of pores in solid porous bodies. Part II', Nanotehnologii v Stroitelʹstvehttp://nanobuild.ru/ru_RU/journal/Nanobuild-6-2018/124-155.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Two different methods to calculate coordination number were utilized and compared.
Darnowski Piotr, Furmański Piotr, Domanski Roman 2017, 'Coordination number for random distribution of parallel fibres', Archives of Thermodynamicshttp://www.degruyter.com/view/j/aoter.2017.38.issue-1/aoter-2017-0001/aoter-2017-0001.xml?format=INT. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The central metal ion displays the coordination number nine in these complexes.
Ram K. Agarwal, Himanshu Agarwal, Neetu Goel, S.K. Sindhu 2001, 'Synthesis and spectral studies of some lanthanide(III) complexes with 4-[N-(p-dimethylaminobenzalidene)amino]antipyrine semicarbazone', Bulletin of the Chemical Society of Ethiopiahttp://www.ajol.info/index.php/bcse/article/view/71965. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Both coordination number and magnitude of fabric anisotropy contribute to the increasing shear modulus.
Cui Liang, Bhattacharya Subhamoy, Nikitas George 2017, 'Micromechanics of soil responses in cyclic simple shear tests', EPJ Web of Conferenceshttps://doi.org/10.1051/epjconf/201714002008. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The metal ion displays a coordination number of eight and a square-antiprismatic coordination geometry.
Patrick S. Barber, Ana de Bettencourt-Dias 2011, 'Diaquatris[4,4,4-trifluoro-3-oxo-1-(thiophen-2-yl)but-1-en-1-olato]neodymium(III)acetonitrile monosolvate', Acta Crystallographica Section Ehttp://scripts.iucr.org/cgi-bin/paper?S1600536811030376. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
When forming mixed packages, the coordination number can have fractional values.
KUDRYAVTSEV Pavel Gennadievich 2018, 'Structure of pores in solid porous bodies. Part II', Nanotehnologii v Stroitelʹstvehttp://nanobuild.ru/ru_RU/journal/Nanobuild-6-2018/124-155.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Our results indicate that these features strongly depend on the coordination number in the material.
Leonardo Evaristo de Sousa, Demétrio Antônio da Silva Filho, Rafael Timóteo de Sousa,Pedro Henrique de Oliveira Neto 2018, 'Exciton Diffusion in Organic Nanofibers: A Monte Carlo Study on the Effects of Temperatureand Dimensionality', Scientific Reportshttp://link.springer.com/article/10.1038/s41598-018-32232-5. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Complex 1 exhibits a geometrically symmetric core with a {4/6} coordination number set.
In-Taek Lim, Ki-Young Choi 2013, 'Self-Assembly of a 1D Hydrogen-Bonded Polymer from a Hexamethyltetraaza MacrocyclicNickel(II) Complex and Isophthalic Acid', Moleculeshttp://www.mdpi.com/1420-3049/18/6/6608. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The two potassium cations both show a coordination number of 9.
M. K. Dhatchaiyini, M. NizamMohideen, G. Rajasekar, A. Bhaskaran 2019, 'Dipotassium tetrahydroxidopentaoxidotetraborate monohydrate', IUCrDatahttp://scripts.iucr.org/cgi-bin/paper?S2414314619001287. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)