Abstract
Reactions of CuF2, CuCl2 · 2H2O and CuBr2 with 2,2′-dipyridylamine (HDPA) in water at room temperature using Cu:HDPA = 2:1 mol yield [Cu(HDPA)(H2O)2F]F · 3H2O (1), Cu(HDPA)Cl2 (2) and Cu(HDPA)Br2 (3) respectively. The structures of 2 and 3 are isostructural in spacegroup C2 with cell dimensions; for 2, a = 14.702(8), b = 7.726(2), c = 4.829(6) Å, β = 96.68(8)° and for 3, a = 14.2934(8), b = 7.9057(6), c = 5.1982(5) Å, β = 94.049(7)°. In the X-ray crystal structure, the complex 1 is found to contain tapes of water pentamers. Our DFT calculations at the B3LYP/LanL2DZ level show that the reaction Cu(HDPA)X2 + 2H2O = [Cu(HDPA)(H2O)2X]X is most exothermic in the gas phase when X− = F−, i.e., the tendency of water uptake is maximum for Cu(HDPA)F2. It seems that the exothermicities of the aquations of Cu(HDPA)Cl2 and Cu(HDPA)Br2 are not sufficient to stabilise the type of ribbons of water observed in 1 and consequently water is eschewed when X− = Cl− or Br−.
Graphical Abstract
Cu(2,2′-dipyridylamine)X2 takes up water to produce ribbons of water pentamer, as shown in the accompanied picture (red: O atom of a solvent water molecule), only when X− is F− but not when it Cl− or Br−. The results are rationalised by means of DFT calculations at the B3LYP/LanL2DZ level.
Similar content being viewed by others
References
Ludwig R (2001) Angew Chem Int Ed 40:1808
Infantes L, Motherwell S (2002) Cryst Eng Comm 4:454
Infantes L, Chisholm J, Motherwell S (2003) Cryst Eng Comm 5:480
Mascal M, Infantes L, Chisholm J (2006) Angew Chem Int Ed 45:32
Lakshminarayanan PS, Suresh E, Ghosh P (2006) Angew Chem Int Ed 45:3807
Mir MH, Vittal J (2007) Angew Chem Int Ed 46:1
Jin Y, Che Y, Batten SR, Chen P, Zheng J (2007) Eur J Inorg Chem 1925
Naskar JP, Drew MGB, Hulme A, Tocher DA, Datta D (2005) Cryst Eng Comm 7:67
Zheng J, Batten SR, Du M (2005) Inorg Chem 44:3371
CrysAlis v1 (2005) Oxford Diffraction Ltd. Oxford, UK
Sheldrick GM, SHELXS-97, SHELXL-97 (1997) University of Göttingen, Göttingen: Germany
ABSPACK (2005) Oxford Diffraction Ltd, Oxford, UK
Drew MGB, Nag S, Datta D (2007) Inorg Chim Acta doi:10.1016/j.ica.2007.07.014
Jacobson RA, Jensen WP (1981) Inorg Chim Acta 52:205
Spodine E, Atria AM, Baggio R, Garland MT (1996) Acta Crystallogr C52:1407
Ray N, Tyagi S, Hathaway BJ (1982) Chem Soc Dalton Trans 143
Banerjee K, De S, Datta DJ (2007) Chem Crystallogr 37:675
Wales DJ, Walsh TRJ (1996) Chem Phys 105:6957
Graf S, Mohr W, Leutwyler SJ (1996) Chem Phys 110:7893
Keutsch FN, Saykally (2001) RJ Proc Natl Acad Sci 98:10533
Harker HA, Viant MR, Keutsch FN, Michael EA, McLaughlin RP, Saykally RJ (2005) J Phys Chem A109:6483
Frisch MJ, Trucks GW, Schlegel HB, Scuseria GE, Robb MA, Cheeseman, Montgomery, JR, Vreven Jr, T, Kudin, KN, Burant JC, Millam JM, Iyengar SS, Tomasi J, Barone V, Mennucci B, Cossi M, Scalmani G, Rega N, Petersson GA, Nakatsuji H, Hada M, Ehara M, Toyota, K, Fukuda R, Hasegawa J, Ishida M, Nakajima T, Honda Y, Kitao O, Nakai H, Klene M, Li X, Knox JE, Hratchian HP, Cross JB, Adamo C, Jaramillo J, Gomperts R, Stratmann RE, Yazyev O, Austin AJ, Cammi R, Pomelli C, Ochterski JW, Ayala PY, Morokuma K, Voth GA, Salvador P, Dannenberg JJ, Zakrzewski VG, Dapprich S, Daniels, AD, Strain, MC, Farkas O, Malick DK, Rabuck AD, Raghavachari K, Foresman JB, Ortiz JV, Cui Q, Baboul AG, Clifford S, Cioslowski J, Stefanov BB, Liu G, Liashenko A, Piskorz P, Komaromi I, Martin RL, Fox DJ, Keith T, Al-Laham MA, Peng CY, Nanayakkara A, Challacombe M, Gill PMW, Johnson B, Chen W, Wong MW, Gonzalez.C, Pople JA Gaussian 03, Revision B.03, Gaussian, Inc., Pittsburgh PA, 2003
Kabrede H, Hentschke RJ (2003) Phys Chem B107:3914
Miller Y, Fredj E, Harvey JN, Gerber RB (2004) J Phys Chem A108:4405
Maeda S, Ohno K (2007) J Phys Chem A111:4527
Acknowledgments
We thank EPSRC and the University of Reading for funds for the X-Calibur system.
Author information
Authors and Affiliations
Corresponding author
Electronic supplementary material
Rights and permissions
About this article
Cite this article
Drew, M.G.B., De, S. & Datta, D. Influence of a Halide Ion on Ribbons of Water Pentamer. J Chem Crystallogr 38, 495–499 (2008). https://doi.org/10.1007/s10870-007-9308-4
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10870-007-9308-4