Novel Organometallic Building Blocks for Crystal Engineering. Synthesis and Structural Characterization of the Dicarboxylic Acid [Cr0(h6-C6H5COOH)2], of Two Polymorphs of it's Oxidation Derivative [CrI(h6-C6H5COOH)2]+[PF6]-, and of the Zwitterionic Form [CrI(h6-C6H5COO)(h6-C6H5COOH)]

D. Braga*; L. Maini; F. Grepioni; C. Elschenbroich; F. Paganelli; Olav Schiemann

doi:10.1021/om0010722

Novel Organometallic Building Blocks for Crystal Engineering. Synthesis and Structural Characterization of the Dicarboxylic Acid [Cr⁰(h⁶-C₆H₅COOH)₂], of Two Polymorphs of it's Oxidation Derivative [Cr^I(h⁶-C₆H₅COOH)₂]⁺[PF6]^-, and of the Zwitterionic Form [Cr^I(h⁶-C₆H₅COO)(h⁶-C₆H₅COOH)]

D. Braga*, L. Maini, F. Grepioni, C. Elschenbroich, F. Paganelli, Olav Schiemann

Research output: Contribution to journal › Article › peer-review

Abstract

The synthesis and Structural characterization of the neutral diamagnetic organometallic dicarboxylic acid [Cr-0(eta (6)-C6H5COOH)(2)] (1) is reported. Oxidation of 1 by oxygen leads to formation of the paramagnetic dicarboxylic acid cation [Cr-I(eta (6)-C6H5COOH)(2)](+) (2), which has been isolated as the [PF6](-) salt in two crystalline polymorphic modifications, a monoclinic form alpha and a triclinic form beta. The neutral zwitterionic form [CrI(eta (6)-C6H5COOH)(eta (6)-C6H5-COOH] (3) has been obtained in a cocrystal with [NH4][PF6] upon treatment of the acid salt [Cr-I(eta (6)-C6H5COOH)(2)] + [PF6]-with ammonia. The hydrogen bonding interactions established by the neutral and cationic acids are discussed and compared with those observed in the zwitterionic form and in the related complexes Fe-II(eta5-C5H4COOH)(2)] and [Co-III(eta (5)-C5H4-COOH)(2)+[PF6](-).

Original language	English
Pages (from-to)	1875-1881
Number of pages	7
Journal	Organometallics
Volume	20
Issue number	9
DOIs	https://doi.org/10.1021/om0010722
Publication status	Published - 30 Apr 2001

Keywords

O HYDROGEN-BONDS
INTERMOLECULAR INTERACTIONS
SUPRAMOLECULAR SYNTHONS
METAL-COMPLEXES
RECOGNITION
STRATEGIES
BEHAVIOR
CATIONS
MAGNETS
DESIGN

Access to Document

10.1021/om0010722

Fingerprint

Dive into the research topics of 'Novel Organometallic Building Blocks for Crystal Engineering. Synthesis and Structural Characterization of the Dicarboxylic Acid [Cr⁰(h⁶-C₆H₅COOH)₂], of Two Polymorphs of it's Oxidation Derivative [Cr^I(h⁶-C₆H₅COOH)₂]⁺[PF6]^-, and of the Zwitterionic Form [Cr^I(h⁶-C₆H₅COO)(h⁶-C₆H₅COOH)]'. Together they form a unique fingerprint.

Cite this

Braga*, D., Maini, L., Grepioni, F., Elschenbroich, C., Paganelli, F., & Schiemann, O. (2001). Novel Organometallic Building Blocks for Crystal Engineering. Synthesis and Structural Characterization of the Dicarboxylic Acid [Cr⁰(h⁶-C₆H₅COOH)₂], of Two Polymorphs of it's Oxidation Derivative [Cr^I(h⁶-C₆H₅COOH)₂]⁺[PF6]^-, and of the Zwitterionic Form [Cr^I(h⁶-C₆H₅COO)(h⁶-C₆H₅COOH)]. Organometallics, 20(9), 1875-1881. https://doi.org/10.1021/om0010722

Braga*, D. ; Maini, L. ; Grepioni, F. et al. / Novel Organometallic Building Blocks for Crystal Engineering. Synthesis and Structural Characterization of the Dicarboxylic Acid [Cr⁰(h⁶-C₆H₅COOH)₂], of Two Polymorphs of it's Oxidation Derivative [Cr^I(h⁶-C₆H₅COOH)₂]⁺[PF6]^-, and of the Zwitterionic Form [Cr^I(h⁶-C₆H₅COO)(h⁶-C₆H₅COOH)]. In: Organometallics. 2001 ; Vol. 20, No. 9. pp. 1875-1881.

@article{931bf02b533c43efbbb141c867d2d216,

title = "Novel Organometallic Building Blocks for Crystal Engineering. Synthesis and Structural Characterization of the Dicarboxylic Acid [Cr0(h6-C6H5COOH)2], of Two Polymorphs of it's Oxidation Derivative [CrI(h6-C6H5COOH)2]+[PF6]-, and of the Zwitterionic Form [CrI(h6-C6H5COO)(h6-C6H5COOH)]",

abstract = "The synthesis and Structural characterization of the neutral diamagnetic organometallic dicarboxylic acid [Cr-0(eta (6)-C6H5COOH)(2)] (1) is reported. Oxidation of 1 by oxygen leads to formation of the paramagnetic dicarboxylic acid cation [Cr-I(eta (6)-C6H5COOH)(2)](+) (2), which has been isolated as the [PF6](-) salt in two crystalline polymorphic modifications, a monoclinic form alpha and a triclinic form beta. The neutral zwitterionic form [CrI(eta (6)-C6H5COOH)(eta (6)-C6H5-COOH] (3) has been obtained in a cocrystal with [NH4][PF6] upon treatment of the acid salt [Cr-I(eta (6)-C6H5COOH)(2)] + [PF6]-with ammonia. The hydrogen bonding interactions established by the neutral and cationic acids are discussed and compared with those observed in the zwitterionic form and in the related complexes Fe-II(eta5-C5H4COOH)(2)] and [Co-III(eta (5)-C5H4-COOH)(2)+[PF6](-).",

keywords = "O HYDROGEN-BONDS, INTERMOLECULAR INTERACTIONS, SUPRAMOLECULAR SYNTHONS, METAL-COMPLEXES, RECOGNITION, STRATEGIES, BEHAVIOR, CATIONS, MAGNETS, DESIGN",

author = "D. Braga* and L. Maini and F. Grepioni and C. Elschenbroich and F. Paganelli and Olav Schiemann",

year = "2001",

month = apr,

day = "30",

doi = "10.1021/om0010722",

language = "English",

volume = "20",

pages = "1875--1881",

journal = "Organometallics",

issn = "0276-7333",

publisher = "American Chemical Society (ACS)",

number = "9",

}

Braga*, D, Maini, L, Grepioni, F, Elschenbroich, C, Paganelli, F & Schiemann, O 2001, 'Novel Organometallic Building Blocks for Crystal Engineering. Synthesis and Structural Characterization of the Dicarboxylic Acid [Cr⁰(h⁶-C₆H₅COOH)₂], of Two Polymorphs of it's Oxidation Derivative [Cr^I(h⁶-C₆H₅COOH)₂]⁺[PF6]^-, and of the Zwitterionic Form [Cr^I(h⁶-C₆H₅COO)(h⁶-C₆H₅COOH)]', Organometallics, vol. 20, no. 9, pp. 1875-1881. https://doi.org/10.1021/om0010722

Novel Organometallic Building Blocks for Crystal Engineering. Synthesis and Structural Characterization of the Dicarboxylic Acid [Cr⁰(h⁶-C₆H₅COOH)₂], of Two Polymorphs of it's Oxidation Derivative [Cr^I(h⁶-C₆H₅COOH)₂]⁺[PF6]^-, and of the Zwitterionic Form [Cr^I(h⁶-C₆H₅COO)(h⁶-C₆H₅COOH)]. / Braga*, D.; Maini, L.; Grepioni, F. et al.
In: Organometallics, Vol. 20, No. 9, 30.04.2001, p. 1875-1881.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Novel Organometallic Building Blocks for Crystal Engineering. Synthesis and Structural Characterization of the Dicarboxylic Acid [Cr0(h6-C6H5COOH)2], of Two Polymorphs of it's Oxidation Derivative [CrI(h6-C6H5COOH)2]+[PF6]-, and of the Zwitterionic Form [CrI(h6-C6H5COO)(h6-C6H5COOH)]

AU - Braga, D.

AU - Maini, L.

AU - Grepioni, F.

AU - Elschenbroich, C.

AU - Paganelli, F.

AU - Schiemann, Olav

PY - 2001/4/30

Y1 - 2001/4/30

N2 - The synthesis and Structural characterization of the neutral diamagnetic organometallic dicarboxylic acid [Cr-0(eta (6)-C6H5COOH)(2)] (1) is reported. Oxidation of 1 by oxygen leads to formation of the paramagnetic dicarboxylic acid cation [Cr-I(eta (6)-C6H5COOH)(2)](+) (2), which has been isolated as the [PF6](-) salt in two crystalline polymorphic modifications, a monoclinic form alpha and a triclinic form beta. The neutral zwitterionic form [CrI(eta (6)-C6H5COOH)(eta (6)-C6H5-COOH] (3) has been obtained in a cocrystal with [NH4][PF6] upon treatment of the acid salt [Cr-I(eta (6)-C6H5COOH)(2)] + [PF6]-with ammonia. The hydrogen bonding interactions established by the neutral and cationic acids are discussed and compared with those observed in the zwitterionic form and in the related complexes Fe-II(eta5-C5H4COOH)(2)] and [Co-III(eta (5)-C5H4-COOH)(2)+[PF6](-).

AB - The synthesis and Structural characterization of the neutral diamagnetic organometallic dicarboxylic acid [Cr-0(eta (6)-C6H5COOH)(2)] (1) is reported. Oxidation of 1 by oxygen leads to formation of the paramagnetic dicarboxylic acid cation [Cr-I(eta (6)-C6H5COOH)(2)](+) (2), which has been isolated as the [PF6](-) salt in two crystalline polymorphic modifications, a monoclinic form alpha and a triclinic form beta. The neutral zwitterionic form [CrI(eta (6)-C6H5COOH)(eta (6)-C6H5-COOH] (3) has been obtained in a cocrystal with [NH4][PF6] upon treatment of the acid salt [Cr-I(eta (6)-C6H5COOH)(2)] + [PF6]-with ammonia. The hydrogen bonding interactions established by the neutral and cationic acids are discussed and compared with those observed in the zwitterionic form and in the related complexes Fe-II(eta5-C5H4COOH)(2)] and [Co-III(eta (5)-C5H4-COOH)(2)+[PF6](-).

KW - O HYDROGEN-BONDS

KW - INTERMOLECULAR INTERACTIONS

KW - SUPRAMOLECULAR SYNTHONS

KW - METAL-COMPLEXES

KW - RECOGNITION

KW - STRATEGIES

KW - BEHAVIOR

KW - CATIONS

KW - MAGNETS

KW - DESIGN

UR - http://www.scopus.com/inward/record.url?scp=0035972357&partnerID=8YFLogxK

UR - http://pubs.acs.org/cgi-bin/article.cgi/orgnd7/2001/20/i09/pdf/om0010722.pdf

U2 - 10.1021/om0010722

DO - 10.1021/om0010722

M3 - Article

SN - 0276-7333

VL - 20

SP - 1875

EP - 1881

JO - Organometallics

JF - Organometallics

IS - 9

ER -

Braga* D, Maini L, Grepioni F, Elschenbroich C, Paganelli F, Schiemann O. Novel Organometallic Building Blocks for Crystal Engineering. Synthesis and Structural Characterization of the Dicarboxylic Acid [Cr⁰(h⁶-C₆H₅COOH)₂], of Two Polymorphs of it's Oxidation Derivative [Cr^I(h⁶-C₆H₅COOH)₂]⁺[PF6]^-, and of the Zwitterionic Form [Cr^I(h⁶-C₆H₅COO)(h⁶-C₆H₅COOH)]. Organometallics. 2001 Apr 30;20(9):1875-1881. doi: 10.1021/om0010722