Crystal growth and characterization of semiorganic nonlinear optical material: sodiump-nitrophenolate dihydrate

Brahadeeswaran, S.; Venkataramanan, V.; Sherwood, J. N.; Bhat, H. L.

doi:10.1039/a705138g

Cited by 91 publications

(35 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…monoclinic tetrahydrate and monoclinic monohydrate, which are easily distinguishable by their colour, the former being yellow and the latter being red±brown. Some mention of the tetrahydrate form has already been made in a previous report (Brahadeeswaran et al, 1998). The present study reports the structure of this tetrahydrate form, (I), in more detail.…”

mentioning

confidence: 73%

Sodiump-nitrophenolate tetrahydrate

et al. 2002

Self Cite

View full text Add to dashboard Cite

Key indicatorsSingle-crystal X-ray study T = 123 K Mean '(C±C) = 0.003 A Ê R factor = 0.041 wR factor = 0.101 Data-to-parameter ratio = 12.5For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.# 2002 International Union of Crystallography Printed in Great Britain ± all rights reservedThe structure of sodium p-nitrophenolate tetrahydrate, Na + ÁC 6 H 4 NO 3 À Á4H 2 O, is presented. The nature of the hydrogen and coordination bonds in this structure is discussed and compared with that of sodium p-nitrophenolate dihydrate. CommentThe in¯uence of solvents on crystallization in the formation of new structures of organic compounds is well known and this effect can pose serious problems when crystallizing materials for non-linear optical (NLO) applications. Minemoto et al. (1994) have reported problems associated with the selection of solvents for growing crystals of sodium p-nitrophenolate dihydrate (NPNaÁ2H 2 O), a recent NLO material. This orthorhombic dihydrate system (Minemoto et al., 1992) was formed when crystallized from methanol solution, whereas the water solvent gave transparent crystals in solution, but these lost their transparency on exposure to air. We have carried out further investigations on the growth of NPNa with water as solvent. During the course of this study, we found two types of crystals, viz. monoclinic tetrahydrate and monoclinic monohydrate, which are easily distinguishable by their colour, the former being yellow and the latter being red±brown. Some mention of the tetrahydrate form has already been made in a previous report (Brahadeeswaran et al., 1998). The present study reports the structure of this tetrahydrate form, (I), in more detail.In the tetrahydrate form, we have observed extensive hydrogen bonding. Both O1A and O1B of the nitrophenoxy ions in the asymmetric unit shown in Fig. 1 are hydrogen bonded to four O atoms of the solvate water molecules. The O atoms of the NO 2 group also form hydrogen bonds with water molecules (Table 1). The availability of relatively more water molecules, as well as Na + ions in special positions in this form (see Fig. 2), alters the hydrogen-bonding patterns, compared to the well studied dihydrate form, in which the water molecule is hydrogen bonded only to atom O1 of the nitro-

show abstract

mentioning

confidence: 73%

Sodiump-nitrophenolate tetrahydrate

et al. 2002

Self Cite

View full text Add to dashboard Cite

show abstract

“…Solvents offering moderate solubility-temperature gradient for a material and yielding prismatic growth habit will be considered as suitable solvents for growing crystal of that material. Another important factor influencing the habit of growing crystal is the polarity of the solvents [3][4][5]. Table 1 presents the different electric dipole moments of solvents [6] employed in the present work and their influence on the growth habits of DBCH crystals.…”

Section: Choice Of Solventmentioning

confidence: 99%

Growth and characterization of 2,6‐dibenzylidenecyclohexanone single crystal

Lakshmi

Ramamurthi²

2005

Cryst. Res. Technol.

View full text Add to dashboard Cite

Following the temperature reduction method, growth of single crystals of organic 2,6-dibenzylidenecyclohexanone (DBCH) material from ethanol solution is reported in the present work. Solubility and metastable zone width measurements were carried out under stirring and nonstirring conditions of solution. Cell dimensions were obtained from single crystal X-ray diffraction study. From FT-IR spectral analysis, various functional groups of this crystal were identified. UV-Visible spectral analysis was made. Mechanical strength of the grown crystal was estimated on the prominent (110) face using a Vickers microhardness tester.

show abstract

“…These materials in addition to retaining high optical nonlinearities of organic molecules also possess favourable physical properties. An added advantage is that large single crystals can be grown from slow evaporation solution growth [7,8]. The literature survey reveals that, to the best of our knowledge, no intensive observation of spectroscopic [FT-IR and FT-Raman] and theoretical [HF/DFT] investigation has been reported so far.…”

Section: Introductionmentioning

confidence: 99%