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Volume: 20 | Article ID: art00004_2
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Crystal and Electronic Structure of 2,9-Dichlorodithioketoquinacridone - Polymorph of Dimethylacetamide-Solvated Crystals -
Tomonori Hoki
Takatoshi Senju
Jin Mizuguchi
  DOI :  10.2352/ISSN.2169-4451.2004.20.1.art00004_2  Published Online :  January 2004
Abstract

2,9-Dichlorodithioketoquinacridone (DTQ-Cl: Fig.1(a)) is a thionated derivative of industrially important 2,9-dichloroquinacridone used as colorants in painting and imaging industries. Crystallographic and electronic characterization has been carried out on dimethylacetamide-solvated single crystals: DTQ-Cl/(DMA)2. There are two crystal Modifications I and II which crystallize in the space group of P21/c and P-1, respectively. In both crystals, two DMA molecules are hydrogen-bonded to one DTQ-Cl molecule. A larger bathochromic is observed on going from solution to the solid state in Modification II than in Modification I (730 and 520 cm−1). This is presumably due to larger excitonic interactions between transition dipoles in modification II than in modification I.

Journal Title : NIP & Digital Fabrication Conference
Publisher Name : Society of Imaging Science and Technology
Publisher Location : 7003 Kilworth Lane, Springfield, VA 22151, USA
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 DOI 10.2352/ISSN.2169-4451.2004.20.1.art00004_2
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Tomonori Hoki, Takatoshi Senju, Jin Mizuguchi, "Crystal and Electronic Structure of 2,9-Dichlorodithioketoquinacridone - Polymorph of Dimethylacetamide-Solvated Crystals -"  in Proc. IS&T Int'l Conf. on Digital Printing Technologies (NIP20),  2004,  pp 528 - 533,  https://doi.org/10.2352/ISSN.2169-4451.2004.20.1.art00004_2

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Articles
Crystal and Electronic Structure of 2,9-Dichlorodithioketoquinacridone - Polymorph of Dimethylacetamide-Solvated Crystals -
HokiTomonori
SenjuTakatoshi
MizuguchiJin
01012004
2004
2
528
533
2004
2,9-Dichlorodithioketoquinacridone (DTQ-Cl: Fig.1(a)) is a thionated derivative of industrially important 2,9-dichloroquinacridone used as colorants in painting and imaging industries. Crystallographic and electronic characterization has been carried out on dimethylacetamide-solvated single crystals: DTQ-Cl/(DMA)2. There are two crystal Modifications I and II which crystallize in the space group of P21/c and P-1, respectively. In both crystals, two DMA molecules are hydrogen-bonded to one DTQ-Cl molecule. A larger bathochromic is observed on going from solution to the solid state in Modification II than in Modification I (730 and 520 cm−1). This is presumably due to larger excitonic interactions between transition dipoles in modification II than in modification I.